Film backings prepared from thermoplastic polyester-urethane ela

Details Film backings prepared from thermoplastic polyester-urethane ela Film backings prepared from thermoplastic polyester-urethane ela

1973-11-06

1976-05-25

Piamalto, Bernard D.

Stock material or miscellaneous articles

Composite

Of polyamidoester

427207, 428480, C09J 702

Patent

active

039595625

ABSTRACT:
A flexible, solvent-resistant film backing for pressure-sensitive adhesives is disclosed. The backing comprises a thermoplastic essentially linear polyester-urethane elastomer and a thermoplastic phenoxy resin having the formula ##SPC1##
Wherein n is an integer from 50 to 150, the phenoxy resin being present in an amount from about 35 to about 100 parts per 100 parts by weight of the polyester-urethane elastomer.

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patent: 3778302 (1973-12-01), Dahl
patent: 3796678 (1974-03-01), Bartizal

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