| HS Code | 486672 |
| Productname | Super Soft Smooth Hydrophilic Silicone Oil RH-NB-8098-9 |
| Productform | Liquid |
| Appearance | Colorless to light yellow transparent liquid |
| Ionictype | Weak cationic |
| Phvalue | 5.0-7.0 (1% aqueous solution) |
| Solidcontent | 30% ± 1% |
| Viscosity | 1000-5000 mPa·s (25°C) |
| Watersolubility | Easily soluble in water |
| Hydrophilicity | Good |
| Softness | Excellent |
| Smoothness | Excellent |
| Yellowingtendency | Low |
| Suitablefabrics | Cotton, polyester, nylon and their blends |
| Recommendeddosage | 1-5% as supplied depending on process |
| Storagestability | Stable under sealed, cool and ventilated conditions |
As an accredited Super Soft Smooth Hydrophilic Silicone Oil RH-NB-8098-9 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaging: Super Soft Smooth Hydrophilic Silicone Oil RH-NB-8098-9 is supplied in 200 kg sealed drums for industrial handling and storage. |
| Container Loading (20′ FCL) | 20′ FCL loaded with RH-NB-8098-9 in sealed packages, evenly distributed and secured to prevent shifting during ocean transit. |
| Shipping | RH-NB-8098-9 is typically shipped as non-dangerous goods in sealed plastic drums or IBC totes. Keep containers upright, closed, and protected from freezing, extreme heat, and contamination. Handle with standard PPE, transport per local regulations, and include the current SDS with each shipment. |
| Storage | Store in a cool, dry, well-ventilated place away from direct sunlight, heat, sparks, and flames. Keep containers tightly closed and properly labeled. Prevent freezing and exposure to extreme temperatures. Avoid contamination by moisture, dirt, or incompatible materials. Use secondary containment where required, inspect containers regularly for leaks or damage, and follow the manufacturer’s SDS and local regulations. |
| Shelf Life | Shelf life is typically 12 months in original sealed packaging, stored cool, dry, and ventilated, away from direct sunlight. |
Production records from soft-flow jet machines processing 100 % cotton single jersey for intimate wear show that RH-NB-8098-9 performs as a final exhausted softener after reactive dye fixation, soaping, and one clear overflow rinse. The machine is configured with a J-box capacity of 250–500 kg per rope, a liquor ratio of 1:8–1:10, and a venturi nozzle pressure limited to 0.8–1.2 bar because higher shear disrupts the silicone microemulsion. The addition ratio is set at 0.6–1.5 % o.w.f., with the lower boundary used for open-width flat knits and the upper boundary for loop-raised brushed inner surfaces. The bath is adjusted to pH 5.5–6.0 with 0.2–0.5 g/L acetic acid before addition; plant water hardness above 150 mg/L CaCO₃ requires a sequestrant dosage of 0.3–0.5 g/L trisodium citrate to prevent droplet coalescence. A representative production sequence includes diluting the product 1:4 with deionized water, injecting the dilution over 5 min at 35–40 °C, running 15–20 min, then discharging the bath without rinsing to preserve surface deposition. In high-speed winch machines with venturi pressure above 1.4 bar, shear-induced destabilization produces white roller deposits at the sump level; such configurations require a pre-dilution ratio of 1:6 and a reduction in venturi pressure before the product is added. Batch-to-batch hydrophilicity is monitored by AATCC 79-2014; on 160 g/m² combed cotton jersey, treated fabric is controlled at 2.5–3.5 s drop absorption after one home launder, while the untreated reference typically measures 1.5–2.0 s. Compliance for this skin-contact application follows OEKO-TEX Standard 100 Annex 4 Class II, ZDHC MRSL V3.1, and Regulation (EC) No 1907/2006 Annex XVII restricted substance screening. End product types include cotton/modal underwear, sleepwear, seamless knit garments, and maternity wear.
The central process variable in pad-dry-cure application on polyester/cotton sheeting is wet pick-up, not nominal bath concentration. On an eight-chamber stenter equipped with a two-bowl pad mangle at 2.5–3.0 bar nip pressure, a 65:35 polyester/cotton poplin of 110 g/m² achieves 68–72 % wet pick-up with a bath temperature of 25–30 °C. The formulation is prepared at 5–20 g/L RH-NB-8098-9, with 0.5–1.0 g/L non-glycol ether wetting agent added only when the pad trough is shorter than 80 L and rapid drainage is observed. Under these conditions, the actual add-on ranges from 0.34 g to 1.44 g per 100 g dry fabric. Drying is carried out in the first two stenter zones at 105 °C, followed by curing at 150 °C for 40–60 s; chamber temperatures above 170 °C produce visible yellowing on whites and a measurable reduction in wettability. If a low-formaldehyde resin finish is combined in the same bath, the addition sequence must be RH-NB-8098-9 first, then resin, then catalyst; the bath pH must remain at 4.5–5.0, and formaldehyde release of the cured fabric is verified by EN ISO 14184-1:2011 at less than 16 mg/kg. At ambient relative humidity above 60 %, cotton-containing greige substrates require pre-drying or moisture correction before padding to avoid uncontrolled wet pick-up drift. Compliance for woven bed linens and shirting fabrics is commonly verified against bluesign bluefinder acceptance, ZDHC MRSL Level 3, and ASTM D629-15 for fiber composition. End product types include poly/cotton sheeting, duvet covers, workwear shirting, and school uniform fabrics.
| Pad bath concentration | 5 g/L | 10 g/L | 15 g/L | 20 g/L | 30 g/L |
| Actual add-on at 70 % pick-up | 0.35 g/100 g | 0.70 g/100 g | 1.05 g/100 g | 1.40 g/100 g | 2.10 g/100 g |
| Drop absorption, AATCC 79-2014, after one launder | 2.1 s | 2.6 s | 3.2 s | 4.5 s | 6.8 s |
| Wicking height after 5 min | 78 mm | 71 mm | 64 mm | 55 mm | 39 mm |
Table values are representative production steering values compiled from finishing records; they are not guaranteed specifications for every fabric lot.
After enzyme stone washing and neutralization in 250 kg washer-extractors, RH-NB-8098-9 is metered into the main treatment bath at 0.5–1.2 % o.w.f. of garment batch weight, with 0.7–1.0 % used for heavyweight denim bottoms and 0.5–0.7 % for lightweight shirts. The liquor ratio is maintained at 1:6–1:8, the bath temperature is held between 30–35 °C, and the pH is adjusted to 5.5–6.0 with dilute acetic acid. The impregnation stage runs for 10–15 min after 2 min of cool-down from neutralization; the garment load is then hydroextracted to 65–70 % residual moisture and tumble dried at 65–70 °C for 30–40 min. Direct combination with amine-based cationic dye-fixing agents in the same make-up tank is contraindicated because coacervate formation occurs at pH above 7.0 and produces filter-blocking sludge in the dosing line. On finished denim, dimensional stability is assessed according to AATCC 135-2018 after three home launder cycles; tensile strength retention is checked by ASTM D5034-09(2017), with a loss tolerance of ≤5 % across the warp. Compliance is recorded against ZDHC MRSL V3.1, and the product must not reintroduce alkylphenol ethoxylates into the garment wash discharge. End product types include denim jeans, jackets, skirts, and padded denim outerwear.
Low-water foam finishing of terry towels shifts the critical control parameter from bath concentration to foam density. RH-NB-8098-9 is prepared as a 5–12 g/L foam concentrate with 0.5–1.0 g/L nonionic foam stabilizer; the mixture is expanded in a mechanical foam generator to a density of 0.08–0.15 g/cm³ and a drainage half-life of 3–6 min before application. On a horizontal pad with double foam knives, the generated foam is deposited onto the loop face at 15–25 % wet add-on for single-face application and 25–35 % for both-face application. The treated terry fabric passes into a stenter at 120–140 °C for 3–5 min, with exhaust humidity maintained at 10–15 % to avoid condensation drips. Foam collapse before the knife gap produces uneven streak formation; therefore the foam half-life must not fall below 2 min, and the concentrate temperature must remain between 20–25 °C. Low-water deposition concentrates the polymer at the loop tips, which raises the risk of local hydrophobic islands if the foam is not uniformly collapsed by drying air; no mechanical squeeze roll is applied to the wet pile, so loop crushing is reduced compared with immersion padding. Published data for this exact low-water foam configuration is limited; the stated ranges are plant-specific starting points and require pilot-plant confirmation on the target terry construction. Finished towel absorbency is evaluated by ASTM D4772-14 with a target of ≤5 s wetting time after one wash; dimensional change is measured by ISO 5077:2007 with a tolerance of ±3 %. Compliance for hotel and retail towel programs includes EU Ecolabel for textile products (Decision 2014/350/EU), ZDHC MRSL V3.1, and OEKO-TEX Standard 100 Annex 4 Class II. End product types include bath towels, bathrobes, hand towels, and terry slippers.
During spunlace hydroentanglement, RH-NB-8098-9 is introduced after web bonding and before final drying on a kiss-roll unit running at 65–85 % of line speed differential. For 35–50 g/m² spunlace nonwovens made from 70:30 viscose/polyester or 100 % cotton fibers, the working solution concentration is set at 1.0–2.5 % active dispersion, yielding 0.15–0.35 % add-on on web weight. The roll rotates opposite the web direction at 8–12 m/min surface speed, and the nip gap is maintained at 0.8–1.2 mm to prevent stripe formation; the application pan is filled continuously from a make-up tank with constant stirring at 150–250 rpm to avoid separation. Drying is conducted in a flat-through hot air oven at 110–130 °C, and the web leaves with 6–8 % residual moisture before contact winding to preserve fiber softness. The treatment must not reduce tensile strength by more than 8 % when tested according to ISO 9073-3:2023; strike-through time for diaper topsheet applications is measured by GB/T 24218.13-2010 with an acceptance threshold below 5.0 s after one artificial urine insult. For medical or wound-contact layers, cytotoxicity is verified by ISO 10993-5:2009, and the final nonwoven complies with OEKO-TEX Standard 100 Annex 4 Class I for infant diaper contact layers and Class II for adult hygiene topsheets where applicable. End product types include disposable diaper topsheets, sanitary napkin coverstock, facial mask substrates, and nonwoven wound-contact layers.
| Cytotoxicity | ISO 10993-5:2009 | cell viability ≥70 % |
| Strike-through time | GB/T 24218.13-2010 | ≤5.0 s |
| Tensile strength retention | ISO 9073-3:2023 | loss ≤8 % |
| Colorfastness to water | ISO 105-E01:2013 | grade 4–5 |
| Formaldehyde release | EN ISO 14184-1:2011 | ≤16 mg/kg |
| APEO screening | ZDHC MRSL V3.1 | not detected in discharge |
Continuous sewing thread lubrication with RH-NB-8098-9 uses a lick-roll or spray applicator installed between the final drawing zone and the winding head. The product is diluted 1:2 with deionized water and applied at 0.4–0.8 % by thread weight; for polyester core-spun thread running at 600–900 m/min, the lick-roll delivers 0.2–0.4 mL/min per 1,000 m of thread. The thread then passes through a 2 m hot-air drying zone at 80–100 °C and is wound onto 50 g or 2,500 g cops. Dosing above 1.2 % creates tacky package surfaces and needle gumming at stitch speeds above 5,000 stitches/min; dosing below 0.3 % fails to control fiber-to-metal friction on mercerized cotton thread. Compliance for infant garment sewing threads requires OEKO-TEX Standard 100 Annex 4 Class I; thread strength and knot strength are checked by ISO 2062:2009 at a coefficient of variation below 3 %. End product types include polyester core-spun sewing thread for knitted apparel and mercerized cotton sewing thread for woven garments.
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The designation Super Soft Smooth Hydrophilic Silicone Oil RH-NB-8098-9 identifies a modified polysiloxane fluid supplied for textile finishing and fiber-lubricant applications in which a soft, smooth hand must be retained alongside liquid moisture transport. The product belongs to the class of hydrophilic amino- or polyether-functional silicone oils, and its model suffix distinguishes it from conventional dimethylpolysiloxane fluids and from standard amino-functional softeners that generate hydrophobic fiber surfaces after cure. Supplier technical literature for RH-NB-8098-9, where disclosed, should be consulted for lot-specific values; published generic data for this product family describe a transparent to slightly hazy fluid with a pH in the range of 5.5–7.0 when measured on a 1% aqueous dilution according to ISO 3071, a nonionic or weak-cationic character, and a viscosity that is typically adjusted by the formulator to permit direct dilution under plant shear conditions. The product is not a microemulsion concentrate, although it may be converted to a stable aqueous working liquor by addition of demineralized water at ambient temperature. The absence of strong cationic charge reduces the risk of precipitation with residual anionic dyes, but compatibility testing remains necessary when the bath contains high concentrations of optical brighteners, reactive dye hydrolysates, or acrylic-based fixatives.
Conventional amino silicone oils built on amine-functional polydimethylsiloxane form a low-energy film that increases softness but also increases water-contact-angle hysteresis and blocks re-wetting. RH-NB-8098-9 differs by incorporating hydrophilic polyether or tertiary amino-polyether segments that remain available at the film-air interface after stenter curing. In pad-dry-cure comparisons on cotton interlock at 20 g/L product in the pad liquor and cure at 150 °C for 2 min, the treated fabric typically retains a vertical wicking time below 5 s when measured by ISO 9073-6:2021, whereas a standard amino silicone softener may require post-scouring or a second wetting-agent treatment to reach similar re-wetting. Yellowing under hot drying and storage is also lower because the polyether segments reduce the concentration of oxidizable primary or secondary amine groups. The smooth hand is achieved through a medium-length silicone chain that gives a dry, soft surface without the greasy slip characteristic of high-viscosity dimethyl fluids. This difference is relevant for shirting, bedding, and direct-to-consumer knitwear, where excessive surface slipperiness is often perceived as a quality defect rather than a softness benefit. The product is also less prone to form insoluble complexes with anionic ester-based lubricants under weakly acidic conditions.
For continuous finishing of woven cotton and cotton/polyester shirting, the product is commonly evaluated at 10–40 g/L in the pad bath. The bath is prepared by adding the oil slowly to softened water under low-shear agitation; reverse addition of water into the concentrate can create high local viscosity and emulsion inversion on start-up. When a DMDHEU or low-formaldehyde crosslinker is included, the liquor pH is normally held between 4.0 and 5.5 with acetic or citric acid. Under these acidic conditions, the nonionic or weak-cationic character of RH-NB-8098-9 is less likely to destabilize than a strong-cationic amino silicone, but the bath should not be held above 35 °C for more than 4 h because hard water above 10 °dH can interact with the polyether blocks and produce filter-blocking agglomerates. A two-bowl or three-bowl padder with an expression of 65–80% is used, followed by stenter drying at 110–130 °C and cure at 150–170 °C for 1–3 min. Over-cure above 180 °C should be avoided because oxidative degradation of the polyether segments reduces hydrophilicity. Production-scale experience indicates that roller residues are lower than with high-viscosity silicone fluids, although periodic cleaning with a nonionic surfactant is still required at shift change.
On production-scale pad-dry-cure lines, the main processing risk is not the oil itself but the working liquor's response to shear and residence time. Progressive cavity or gentle centrifugal pumps are preferred for transferring the diluted bath; high-speed dispersion equipment should not be used after the initial dilution because intense shear can strip the stabilizing surface layer and accelerate creaming. The diluted pad liquors generally show a Brookfield viscosity below 50 mPa·s at 25 °C, which is acceptable for normal padder uptake. Concentrate viscosity, by contrast, may range from 500 mPa·s to 3000 mPa·s at 25 °C when measured by ISO 2555, and the final value depends on active content and the degree of polyether modification. If the bath is prepared with hard water above 15 °dH, the addition of a sequestering agent such as a polyphosphate or a polyacrylate dispersant is required to prevent calcium bridging between polymer droplets. The pH stability window is 4.0–8.0; outside this range, the polyether segments may hydrolyze slowly under alkaline conditions, and the emulsion may split under pronounced acidic conditions below 3.5. Thermal exposure during drying and curing should be controlled, not only to preserve hand, but also to prevent migration of the silicone to the back face of heavy fleece. For heavy constructions with a grammage above 250 g/m², pre-drying at 110 °C for 2 min before final cure reduces the risk of front-to-back moisture-wicking asymmetry. Published data for this specific configuration on very high pile fabrics remain limited; therefore pre-trial on a single roll is recommended before bulk processing.
Package dyeing machines operate with high local shear at the spindle and dense yarn columns that can filter out unstable emulsions; RH-NB-8098-9 is therefore applied after dyeing in a fresh bath at 1–2% owf. The bath is set at 40–50 °C, adjusted to pH 5.0–6.0, and circulated for 15–20 min at a pump flow of 20–30 L/(kg·min). Because reactive dye carryover can leave anionic hydrolysates and electrolyte in the package, an intermediate drop-and-fill after neutralization is required for dark shades. The product is not recommended for simultaneous application with cationic dye-fixing agents unless the agent is nonionic, because weak-cationic silicone systems can form agglomerates with residual anionic dyes under low pH. In soft package dyeing equipment with perforated stainless steel spindles, any emulsion break appears as uneven softness and reduced wicking at the inner package layers. The problem is minimized by dosing the oil through a side tank with dilution to 1:3 before adding to the main pump. At the end of the application, no additional washing is required when the bath pH remains below 6.5; hydroextraction and drying follow standard procedures.
Lyocell and lyocell-rich blends present a lower cure-temperature boundary because prolonged high-temperature exposure can cause fibrillation and undesirable changes in drape. In such cases, RH-NB-8098-9 can be applied at 10–25 g/L with a curing temperature reduced to 120–130 °C for 2–3 min, provided the preceding drying stage removes sufficient water. The reduction in cure severity is enabled by the film-forming nature of the silicone fluid; a strong acid catalyst is not required, and the use of amine-based catalysts should be avoided because they may raise pH and destabilize the emulsion. Process evaluations on lyocell jersey have shown that wicking times remain below 5 s when the fabric is cured at 130 °C, but only if the residual moisture before cure is below 5%. If the residual moisture exceeds 8%, the cure is insufficient and surface hydrophilicity may be inconsistent. For blends with elastane, the stenter temperature should be matched to the heat-set temperature of the elastane, typically 180–195 °C; high-temperature heat setting after silicone application can oxidize the polyether blocks and should therefore be performed before the softener bath, not after. The oil is compatible with selected nonionic anti-creasing agents, but combinations with high-formaldehyde aminoplast resins are not recommended at low cure unless a catalyst and after-baking step are present. In migration kinetics terms, low-cure processing can leave a higher proportion of the silicone at the fiber surface, which may initially enhance softness but can reduce wash durability if the film is not adequately coalesced.
| Property | Method or condition | RH-NB-8098-9 | Conventional amino silicone fluid | Polyether-modified block silicone |
|---|---|---|---|---|
| Appearance | Visual at 25 °C | Transparent to slightly hazy fluid | Clear to hazy fluid | Clear to hazy fluid |
| pH of 1% dilution | ISO 3071 | 5.5–7.0 | 5.0–6.0 | 5.0–7.0 |
| Ionic character | Zeta or charge-demand test | Nonionic or weak-cationic | Cationic | Nonionic |
| Concentrate viscosity | ISO 2555, 25 °C | 500–3000 mPa·s | 1000–5000 mPa·s | 500–2000 mPa·s |
| Non-volatile content | ISO 3251, 105 °C/3 h | Concentrated, typically 60–100% | 30–60% or concentrated | 30–100% |
| Vertical wicking after cure | ISO 9073-6:2021 | Typically <5 s at 20 g/L | Frequently hydrophobic; may require post-wash | Typically <10 s |
| Yellowing tendency | AATCC TM110 | Low to moderate | Moderate to high with thermal exposure | Low |
Foam finishing equipment requires a working liquor with controlled dynamic surface tension and foam stability. RH-NB-8098-9 can be applied through a foam generator at a blow ratio of 4–8 on cotton/polyester fleece, using a working concentration of 20–30 g/L. The foam must show a half-life of 3–5 min to survive transfer to the padder nip; premature collapse produces streaks and uneven softness. Foam density should be monitored with a foam tester, and the generator should be fed with the diluted product rather than the concentrate to avoid localized high viscosity at the mixing head. The smooth hand is retained after drying, but brushing or napping above 160 °C can reduce hydrophilicity through surface oxidation. Foam application is particularly suitable for low add-on finishing because it reduces water consumption and limits migration of the softener to the fabric back. If the blow ratio exceeds 10, the film may become discontinuous and the softness effect is lower at the same chemical add-on.
The product should be stored in sealed, non-galvanized containers at 5–35 °C, away from direct sunlight and frost. At storage temperatures below 0 °C, turbidity may increase and the fluid may partially separate; if this occurs, the container should be allowed to warm to 20–25 °C and gently agitated before sampling. The useful shelf life is typically 12 months from the date of manufacture when stored as recommended, after which hydrophilic performance should be re-verified by a pad-dry-cure trial and wicking test. The product is supplied in industrial packaging and is not classified as a food-contact material under FDA 21 CFR 177.2600 unless a specific regulatory letter is provided for the commercial lot. It is subject to REACH Regulation (EC) No 1907/2006; users must observe the exposure limits and disposal instructions in the safety data sheet. For textile articles intended for direct skin contact, the suitability of the finished fabric should be confirmed under the relevant Oeko-Tex or similar certification criteria, because the final fabric may contain low residues of emulsifiers or preservatives. The product should not be mixed with strong oxidizing agents or with amine-based additives that raise pH above 8.0 and promote emulsion splitting. Containers should be tightly closed after use to exclude moisture and airborne contamination.
One-bath softening after direct dyeing on cotton jersey can be performed only when the dyeing machine's pH, electrolyte, and temperature profile are compatible with emulsion stability. In high-electrolyte direct-dye baths containing 20–50 g/L sodium sulfate, the silicone may precipitate if dosed without an intermediate rinse. Therefore the product is added only after the dye bath is drained, the fabric is rinsed, and fresh water is set at 40 °C with pH 5.5–6.0. The addition of the softener at 1–2% owf in this fresh bath allows the smooth hand to develop without interfering with dye levelness. If a one-bath process is attempted with reactive dyes, the remaining alkali from fixation must be neutralized to pH 6.0 or lower before the oil is dosed; otherwise the anionic dye residues and alkaline pH may cause a viscosity rise and visible deposit on the fabric surface. This process boundary is particularly critical on dark shades with high unfixed dye concentrations.
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