Blends of thermoplastic copolyester elastomers with vinyl chlori

Details Blends of thermoplastic copolyester elastomers with vinyl chlori Blends of thermoplastic copolyester elastomers with vinyl chlori

1974-11-08

1976-09-28

Woodberry, Edward M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 316, 260 318G, C08L 6702

Patent

active

RE0289825

ABSTRACT:
A uniform blend of about 5-95% by weight vinyl chloride polymer having a tensile modulus of at least about 50,000 p.s.i. and about 95-5% by weight of at least one thermoplastic segmented copolyester [polymer] containing (1) about 5-90 weight percent long chain ester units derived from at least one long chain glycol having a molecular weight of about 600-6000 and at least one low molecular weight dicarboxylic acid having a molecular weight less than about 300, and (2) about 10-95 weight percent short chain ester units derived from at least one low molecular weight diol having a molecular weight of less than about 250 and at least one low molecular weight dicarboxylic acid having a molecular weight of less than about 300. These blends exhibit excellent abrasion resistance which is maintained even in the presence of a large amount of plasticizer, improved low temperature flexibility, impact resistance and increased scuff resistance. These blends also exhibit improved processing because of excellent thermal stability and low melt viscosity.

REFERENCES:
patent: 3392135 (1968-07-01), Holub et al.
patent: 3501554 (1970-03-01), Aylesworth
patent: 3574789 (1971-04-01), Bungs et al.
patent: 3651014 (1972-03-01), Witsiepe

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