| 摘要 |
A terpolymer of melt index 0.5-200 comprises (a) at least 65% of ethylene, (b) 5-35% of a vinyl ester of a C1- 6 saturated monobasic aliphatic carboxylic acid and (c) 0.01-10% of a C3- 8 a -b -ethylenically unsaturated carboxylic acid containing no ester group. The (b) ester may be vinyl acetate formate, propionate or butyrate and the (c) acid may be methacrylic, acrylic, maleic, fumaric or itaconic acid. The terpolymer may be compounded with paraffin wax and used as an adhesive. The terpolymer may be produced by polymerizing the monomers in benzene and using azobisisobutyronitrile as catalyst. The terpolymers may be cross-linked using 2,2-bis-(p-glycidoxyphenyl) propane or a butylated melamine-formaldehyde resin.ALSO:Non-woven fabrics are prepared using a terpolymer of melt index 0.5-200 and comprising (a) at least 65% ethylene, (b) 5-35% of a vinyl ester of a C1-6 saturated monobasic aliphatic carboxylic acid and (c) 0.01-10% of a C3-8 a -b -ethylenically unsaturated carboxylic acid containing no ester group. Rayon, nylon or polyester fibres may be bonded to form fabrics using a solution of the terpolymer.ALSO:Paper is coated with a terpolymer of melt index 0,5-200 which comprises (a) at least 65% of ethylene, (b) 5-35% of a vinyl ester of a C1-6 saturated monobasic aliphatic carboxylic acid, and (c) 0,01-10% of a C3-8 a ,b ethylenically unsaturated carboxylic acid containing no ester group. The paper may be a titanium dioxide coated sulphite paper and the terpolymer may contain paraffin wax. |
