| HS Code | 277386 |
| Product Name | Chang Chun CCP B-10TX |
| Product Type | Polyvinyl butyral (PVB) resin |
| Chemical Name | Polyvinyl butyral |
| Cas Number | 63148-65-2 |
| Appearance | White granular powder |
| Butyral Content | 70 - 73 wt% |
| Hydroxyl Content | 15 - 18 wt% |
| Acetyl Content | 0.5 - 1.5 wt% |
| Typical Viscosity | 10 - 16 cps (10% solution in methanol at 20°C) |
| Solubility | Soluble in alcohols, ketones, and esters; insoluble in water |
| Relative Density | Approximately 1.1 |
| Moisture Content | ≤ 1% |
| Melting Softening Range | Approximately 60 - 70°C |
As an accredited Chang Chun CCP B-10TX factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Chang Chun CCP B-10TX is packaged in 20 kg paper bags with an inner polyethylene liner, providing dust-proof protection. |
| Container Loading (20′ FCL) | 20′ FCL shipment of Chang Chun CCP B-10TX, securely packed in drums/pallets with proper segregation and documentation. |
| Shipping | Ship Chang Chun CCP B-10TX in sealed, labeled drums or IBC totes, kept upright and secured. Protect from moisture, direct sunlight, and extreme temperatures. Keep away from incompatible materials such as strong oxidizers. Ensure transport documentation and safety data sheets accompany the shipment. Use appropriate handling equipment and follow local regulations. |
| Storage | Store Chang Chun CCP B-10TX in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep the container tightly sealed to prevent moisture contamination and oxidation. Avoid contact with incompatible materials such as strong acids, bases, or oxidizers. Maintain stable temperatures and follow local regulations. |
| Shelf Life | Shelf life is typically 12 months from manufacture when stored in original sealed containers in a cool, dry place. |
On blast-cleaned concrete with surface profile CSP 3–5, Chang Chun CCP B-10TX is mixed at 100 parts by weight with a cycloaliphatic amine hardener at 55–65 phr in a vacuum dissolver rated for −0.08 MPa. The initial mixed viscosity at 23 °C lies between 1,200 and 1,800 mPa·s. After 10 min of high-shear dispersion at 1,500 rpm, the viscosity falls to 600–900 mPa·s. In a 5 kg mass, pot life is 25–40 min. At warehouse temperatures above 30 °C, exotherm shortens pot life to 12–18 min unless the mixed batch is discharged immediately into a thin film. Quartz sand filler at 1.5:1 by weight relative to resin requires a three-roll mill at 25 µm gap to eliminate agglomeration. Filler loadings above 2.2:1 cause static mixer settlement and uneven gloss. Adhesion testing per ASTM D4541 on dry concrete produces 2.8–3.8 MPa. Cohesive substrate failure dominates when moisture vapour transmission remains below 85 g/m²·day. For dry food contact conditions under FDA 21 CFR 175.300, a full cure of 7 days at 20 °C is required before sanitizer exposure. REACH and RoHS documentation covers the base resin, but hardener selection must be verified separately for chlorinated paraffin restrictions under EU 2019/1021.
Vacuum-assisted resin transfer molding with B-10TX and a polyetheramine hardener at 30–32 phr requires the resin bath to be held at 35 °C. This reduces mixed viscosity below 800 mPa·s before the resin enters the preform. At 23 °C, initial viscosity of 1,000–1,400 mPa·s causes flow-front lag through 8 plies of 0/90° biaxial fabric. Dry spots appear on the far side of panels longer than 1.2 m. A vacuum level of −0.095 MPa is maintained after bag leak rate below 0.5 kPa/min is confirmed. Exceeding this leak rate increases visible void content above 2% as determined by optical microscopy of polished sections. Cure at 23 °C for 24 h, followed by 2 h at 80 °C and 2 h at 125 °C, yields a glass transition temperature of 85–95 °C by DSC at 10 °C/min. Laminate tensile properties tested per ASTM D3039 are fiber dominated and fall near 1,900–2,100 MPa for 55 vol% unidirectional carbon. The resin-controlled short-beam strength per ASTM D2344 remains 55–65 MPa. Production-scale infusion pumps must deliver constant pressure rather than constant flow. Inlet pressure spikes above 0.1 MPa cause fiber wash and localized resin-rich zones.
For electronic encapsulation, B-10TX is formulated with methylhexahydrophthalic anhydride at 80–85 phr and 0.5–1.0 phr 1-methylimidazole accelerator. The resin is preheated to 60 °C before alumina filler is added to 70–75 wt%. The resulting paste is passed through a three-roll mill at a 25 µm front gap to break down filler agglomerates. Vacuum degassing is conducted at 1–5 mbar for 20–30 min. Incomplete degas produces corona voids at sharp edges of copper lead frames. The cure schedule of 2 h at 100 °C followed by 4 h at 150 °C gives a glass transition above 150 °C. Filled compositions evaluated per IEC 60068-2-14 test Na withstand 500 thermal cycles from −55 °C to 150 °C without electrolyte leakage. A 3.0 mm section meets V-0 under UL 94. Thermal conductivity reaches 1.2–1.5 W/m·K at 75 wt% alumina. The coefficient of thermal expansion below Tg remains 25–30 ppm/K. Published data for B-10TX in this specific IGBT configuration is limited; the table lists indicative formulation-property gradients for anhydride-cured DGEBA systems comparable to B-10TX.
| Alumina loading (wt%) | Thermal conductivity (W/m·K) | CTE below Tg (ppm/K) | UL 94 at 3 mm |
|---|---|---|---|
| 65 | 0.9–1.1 | 32–36 | V-0 |
| 70 | 1.1–1.3 | 28–32 | V-0 |
| 75 | 1.2–1.5 | 25–30 | V-0 |
Wet filament winding with B-10TX for Type IV composite pressure vessels requires a reactive diluent to bring formulated resin viscosity into the 450–800 mPa·s range at 40 °C. Addition of 10–15 phr 1,4-butanediol diglycidyl ether to the base resin, followed by mixing with an aromatic amine hardener at a stoichiometric ratio calculated from epoxy equivalent weight per ASTM D1652, provides a bath life above 4 h. The gel time is 30–45 min at 60 °C. Carbon tows are pulled through the heated impregnation bath at 35–45 N tension. They are wound at a 54.7° helical angle onto a blow-molded HDPE liner. Winding speed is held below 12 m/min to avoid resin slinging. The wound vessel is rotated in a gas-fired oven at 80 °C for 2 h and then at 140 °C for 4 h. Qualification for compressed natural gas service follows ISO 11439. Hydrostatic cycling runs to 22,000 cycles at 125% of working pressure. Burst test is required above 2.25 times working pressure. In production, batch-to-batch viscosity variation above ±100 mPa·s shifts the wet-out window and causes liner collapse unless winding tension is adjusted within 2 N.
Gravity-fed B-10TX formulations with a low-viscosity amine hardener at 30–35 phr yield a mixed viscosity of 500–800 mPa·s at 20 °C. The material is injected through 13 mm surface packers at 10–20 MPa using a twin-piston pump. Gel time is 15–20 min for a 200 g mass. On substrates above 35 °C, gel time falls below 8 min. The injection front cannot then travel beyond 0.4 m in hairline cracks. Cured bond strength tested per ASTM C1583 on saturated surface-dry concrete is 1.5–2.0 MPa. Compressive strength per ASTM D695 exceeds 70 MPa after 7 days at 23 °C. Formulations containing benzyl alcohol show interfacial bleed and are excluded under EN 1504-5 when the injection is load-bearing.
B-10TX is milled into a marine primer with a polyamide adduct hardener at 60–70 phr, aluminum triphosphate at 10–12 phr, talc at 15–20 phr, and xylene/butanol solvent to 100–120 s flow time in a DIN 53211 4 mm cup. Steel panels are prepared to Sa 2.5 with a 50–75 µm angular profile. Airless spray application is conducted at 15–18 MPa. Two coats at 150 µm dry film thickness each are applied within a 24 h overcoating window at 23 °C. Below 10 °C, polyamide cure stops and amine blush forms. Cyclic ageing per ISO 12944-6 for 25 cycles produces no blistering greater than 2 mm. Rust creep from scribe remains under 3 mm. Cathodic disbondment testing per ASTM G8 holds the disbonded radius below 6 mm at −1.05 V vs SCE for 30 days in 3.5 wt% NaCl at 23 °C. The primer is not suitable for immersion in methanol or strong organic acids due to polyamide hydrolysis. Published data for B-10TX in potable water tank linings is limited because amine leaching must be confirmed under BS 6920 on a formulation-specific basis.
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Chang Chun CCP B-10TX is a partially hydrolysed polyvinyl alcohol resin supplied as a white to off-white granular powder. The grade is classified as a medium-viscosity, partially saponified product in the CCP PVA range. Its residual acetate content disrupts crystallinity, giving cold-water solubility, lower dry-film tensile strength, and higher elongation compared with fully hydrolysed PVA. Under JIS K6726, a 4% aqueous solution at 20°C exhibits a specified viscosity of 10.0–14.0 mPa·s. The degree of hydrolysis is controlled to 86.0–89.0 mol%. Solution pH is 5.0–7.0, volatile matter is ≤ 5.0 wt%, and ash content is ≤ 0.5 wt%. Table 1 summarises the routine quality-control parameters for the resin.
| Parameter | Specification | Test basis |
|---|---|---|
| Appearance | White to off-white granular powder | Visual inspection |
| Viscosity, 4% aqueous solution, 20°C | 10.0–14.0 mPa·s | JIS K6726 |
| Degree of hydrolysis | 86.0–89.0 mol% | JIS K6726 |
| pH, 4% solution | 5.0–7.0 | JIS K6726 |
| Volatile content | ≤ 5.0 wt% | JIS K6726 |
| Ash content | ≤ 0.5 wt% | JIS K6726 |
Polyvinyl alcohol dissolution proceeds by particle wetting followed by heat-assisted disentanglement. When CCP B-10TX is charged directly into hot water above 40°C, a gelatinous surface layer forms on each granule, trapping undissolved polymer and producing fish-eye defects. The production-grade make-down procedure therefore requires initial dispersion in water at 20–25°C using a high-shear eductor or venturi. After uniform dispersion, the batch is heated to 90–95°C and held for 30–45 min under low-speed agitation at 300–500 rpm. A dissolver equipped with a sawtooth impeller and operated at a tip speed of 10–15 m/s during the dispersion phase reduces gel counts. The solution should be filtered through 60–100 mesh screens before transfer to a holding tank. A filter-pressure increase greater than 0.5 bar during a batch suggests incomplete dissolution or gel formation. At 80°C, solution viscosity remains sufficiently stable for 6–8 h; prolonged exposure above 90°C can reduce molecular weight through acid-catalysed chain scission. Water hardness above 300 ppm as CaCO₃ should be chelated or softened because polyvalent salts may reduce solution clarity and shift cloud point.
Because the grade is partially hydrolysed, it is used as a primary film former in polyester-cotton warp sizing rather than only as a secondary binder. On a single-size-box slasher running at 80–120 m/min, a formulation containing 6–9 wt% CCP B-10TX, 0.3–0.6 wt% wax lubricant, and 1–3 wt% acrylic co-binder is maintained at 75–85°C in the size box. Size-box viscosity is typically 15–35 mPa·s at application temperature. On 65/35 polyester/cotton yarn, size add-on is controlled at 8–12% dry weight on yarn. Drying cylinder surface temperatures of 120–130°C remove moisture without forming a highly crystalline PVA skin. The residual acetate groups lower the glass transition of the dry size film, allowing it to deform during shedding and beat-up. This reduces warp end-breaks compared with fully hydrolysed PVA at equivalent add-on, although dry-film abrasion resistance is lower. Where high loom speeds expose the warp to severe reed abrasion, the grade is blended with 10–20% fully hydrolysed PVA or an acrylic binder. Desizing in hot water at 80–90°C or with oxidative desize systems removes the film. Wastewater treatment must account for residual PVA because removal in conventional activated sludge at hydraulic retention times of 6–12 h is limited. Weaving-efficiency gains are site-specific; published data for this exact formulation is limited.
At size press speeds above 800 m/min, size-solution rheology governs film splitting and misting. CCP B-10TX is used at 3–6 wt% PVA solids in combination with oxidised starch or styrene-acrylate surface sizing agents. A common dry-weight ratio of starch to PVA is 70:30. The size press pan is held at 60–70°C to keep solution viscosity below 50 mPa·s. Cooling below 50°C increases extensional viscosity and can produce orange-peel film transfer. Surface strength is evaluated by IGT pick resistance according to ISO 3783, while water absorption is evaluated by the Cobb method according to ISO 535. Improvements depend on base-sheet porosity and sizing degree. The partially hydrolysed structure improves rewetting of repulped broke and reduces hard deposits on dryer cans compared with fully hydrolysed PVA. Addition of 0.5–1.0 wt% calcium stearate dispersion controls dusting during subsequent converting.
In remoistenable adhesive converting, the balance between dry-film blocking resistance and rewet speed is controlled by plasticiser type and concentration. CCP B-10TX is prepared at 12–18 wt% solids in a jacketed mixer at 85–90°C. Glycerol or sorbitol is added at 5–15 phr on dry PVA. The solution is roll-coated onto envelope flaps or paper tape at coating weights of 8–15 g/m² dry. Films dried below 80°C remain water-sensitive. Borax or boric acid is added at 0.1–0.5 phr to increase tack and control viscosity. Concentrations above 1.0 phr on PVA solids cause gelation through diol-borate complex formation. The medium viscosity of B-10TX provides stable coating rheology without the stringiness associated with high-viscosity PVA grades. In emulsion polymerisation, the resin is pre-dissolved at 4–6 wt% and used as a protective colloid in vinyl acetate and vinyl acetate-ethylene systems. The partial hydrolysis range improves adsorption at the monomer-water interface. With redox initiation at 55–65°C, final emulsions at 50–55% solids and 2,000–5,000 mPa·s viscosity are achievable. Electrolyte addition must be staged; monovalent salt concentrations above 0.5 wt% on emulsion can cause viscosity drift and coagulum formation.
The replacement of a fully hydrolysed PVA with CCP B-10TX changes crystalline content, water sensitivity, and tensile behaviour. At 86.0–89.0 mol% hydrolysis, sufficient residual acetate remains to disrupt hydrogen-bonded crystalline domains. The film remains soluble in cold water and exhibits lower tensile strength than fully hydrolysed PVA. Fully hydrolysed grades above 98 mol% require heating above 80°C for complete dissolution and produce stronger, more water-resistant films. In warp sizing, the partial grade may require an add-on increase of 1–2 percentage points to match the abrasion resistance of a fully hydrolysed grade, but desizing is faster and less energy-intensive. In paper surface sizing, fully hydrolysed PVA contributes higher water resistance but can form harder deposits on dryer cans. The partial grade reduces deposit hardness while maintaining surface strength improvements. In remoistenable adhesives, partial hydrolysis improves rewet speed and lowers heat-seal activation temperature. Table 2 compares the product with low-viscosity partially hydrolysed PVA and fully hydrolysed PVA classes.
| Parameter | CCP B-10TX | Low-viscosity partially hydrolysed PVA | Fully hydrolysed PVA |
|---|---|---|---|
| Viscosity, 4%, 20°C | 10.0–14.0 mPa·s | 4.5–6.0 mPa·s | Grade-dependent |
| Degree of hydrolysis | 86.0–89.0 mol% | 87–89 mol% | 98–99 mol% |
| Cold-water solubility | Yes at 20–25°C | Yes | Requires heat above 80°C |
| Dry-film strength | Moderate | Low | High |
| Water resistance | Moderate | Low to moderate | High |
| Typical use | Warp sizing, remoistenable adhesives | Paper sizing, emulsion stabilisation | Barrier films, water-resistant adhesives |
Storage and handling boundaries for CCP B-10TX include relative humidity below 60% and temperature below 40°C. The powder is hygroscopic; caking may occur if bags remain open in high-humidity environments. Aqueous solutions held at ambient temperature for more than 24 h should be preserved with a compatible biocide because PVA can support microbial growth. The resin should not be combined with high concentrations of borate, ferric salts, or aluminium salts because insolubilisation or precipitation may occur. For indirect food-contact applications, polyvinyl alcohol is referenced in FDA 21 CFR 175.105, 176.170, and 176.180, but finished formulations require migration testing. Under European Union REACH Regulation EC 1907/2006, PVA as a polymer is exempt from registration, while monomers and additives remain subject to registration. The unmodified product is halogen-free and contains no intentionally added bisphenol A or phthalates.
