Film of carboxylated acrylate latex, and article made therefrom

Details Film of carboxylated acrylate latex, and article made therefrom Film of carboxylated acrylate latex, and article made therefrom

1989-02-13

1989-11-07

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

52631844, 526286, 526298, G08F12202

Patent

active

048793647

ABSTRACT:
A soft but tough self-supporting elastomeric film having a glass transition temperature (T.sub.g) in the range from about -20.degree. C. to about -60.degree. C., raw tensile strength of at least 300 psi, along with an elongation of at least 350% and less than 20% hysteresis loss, exhibits "snap", a characteristic of a natural rubber band. The novel film is derived from a crosslinked carboxylate latex containing from 1-20 phr of itaconic acid (IA) and at least 70 phr of one or more copolymerizable monomers one of which is an acrylate having the structure ##STR1## wherein R.sub.1 is hydrogen or methyl;

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patent: 4129711 (1978-12-01), Viout et al.
patent: 4234467 (1980-11-01), Ryrfors et al.
patent: 4725655 (1988-02-01), Denzinger et al.

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