Product Description
Name:polyvinyl butyral;
English abbreviations:PVB;
Features: excellent softness and flexiability;
Type: thermoplastic resin;
Molecular formula:C14H18 Cl N3 S;
Density:1.07g/cm3;
Molecular weight:30-45k;
Refractive index:1.488(20℃);
Water absorption:≤0.4%;
Softening temperature:60-65℃;
Vitrification temperature:66-84℃;
Solubility: dissolved in most alcohol / ketone / ether / ester organic solvents, insoluble in carbon hydroxyl solvents, such as petroleum solvents, such as gasoline;
Appearance: white powder;
Quality standard:
Index nameSD-1 SD-2 SD-3 SD-4 SD-5 SD-6 SD-7
Viscosity (10% ethanol solution)/mPa.s < 5 5～10 11～20 21～30 31～60 61～100 >100;
Degree of acetalization/% 68~88 68～88 68～88 68～88 68～88 68～88 68～88;
Acid value/(mgKOH/g)≤4.0 4.0 2.0 2.0 1.0 1.0 1.0;
Ash content/%≤0.10 0.10 0.08 0.08 0.10 0.10 0.10;
Volatiles/%≤ 3.0 3.0 3.0 3.0 3.0;
Mass fraction of polyvinyl alcohol polybutanol/%≥ 98.0 98.0 98.0 98.0 98.0 98.0 98.0;
Transparency (ethanol solution): transparent or micro transparency;
Application:
1. Printing ink: bonding material;
2. Paint industry: corrosion resistant coatings, strong antirust ability, adhesion and water resistance of metal bottom coatings and cold proof paint;
3. Ceramic industry: manufacturing pattern of bright color film;
4. Resin industry: making press plastics that replace nonferrous metals such as steel and lead, which can be made into a variety of adhesives;
5. Textile industry: manufacturing fabric treatment agent and yarn ;
6. Food industry: Manufacture of nontoxic packaging materials;
7. Paper industry: making paper treatment agent;
8. Printing industry: flexo, intaglio, Flexo/Gravia, screen printing, heat transfer;
9. Other: laminated glass, adhesive, modified plasticizer, compatibility with other polymers, antishrinking agent, stiffening agent and other waterproof materials.
