| 摘要 |
<p>A thermoformable carpet backing composition having good flexibility at a specified coating weight, good melt strength, good hot melt adhesiveness, resistance to cracking when flexed at low temperatures and shape retention after thermoforming comprising: (A) about 16 to 35% based on the total weight of the composition of an ethylene copolymer having about 70 to 90% by weight of copolymer of ethylene copolymerized therein, selected from the group consisting of ethylene/vinyl aliphatic acid esters copolymers having about 1 to about 4 carbons in the aliphatic acid; and ethylene/alkyl acrylate copolymers having about 1 to about 18 carbons in the alkyl moiety, said ethylene copolymer having a melt index of 0.5 to 12 based on ASTM-D-1238-E, (B) about 65 to 80%, based on the total weight of the composition of filler containing at least 55% based on the total weight of filler of barium sulfate, and (C) from 0 to about 8% based on the total weight of the composition of a non-water-soluble plasticizer. Also disclosed is a process for forming a carpet backing using compositions of the present invention.</p> |
