Heat resistant hot melt precoat and adhesive compositions

C - Chemistry – Metallurgy – 08 – K

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400/4044

C08K 5/01 (2006.01) C08L 91/06 (2006.01) C09D 123/08 (2006.01) C09D 123/10 (2006.01) C09D 123/20 (2006.01)

Patent

CA 1272326

0440p HEAT RESISTANT HOT MELT PRECOAT AND ADHESIVE COMPOSITIONS Abstract of Disclosure Disclosed are hot melt compositions having good resis- tance to flow at temperatures up to 100°C. The compositions are homogenous blends, which consist essentially of (1) an ethylene--mono-unsaturated ester copolymer having a melt index from 2 to about 20, or an ethylene terpolymer having a melt index of from about 6 to about 20; (2) a heat resistant polymer having a crystalline melting point greater than 109°C; (3) a tackifier resin having a Ring and Ball (R&B) softening point of from about 85°C to about 110°C; and (4) a hydrocarbon wax. When the tackifier resin has a R&B softening point of 100°C to about 110°C, a naphthenic oil must also be added. The compositions may also contain a finely divided inorganic filler when used as an adhesive to produce pile fabrics or for backcoating the primary backing of a tufted carpet. The compositions are useful in the manufacture of carpets.

530203

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