Soft ethylenic polymer blend foams

Details Soft ethylenic polymer blend foams Soft ethylenic polymer blend foams

1979-02-22

1980-07-29

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 51, 264 53, 264DIG5, 521 98, 521134, 521910, 535207, 525221, C08J 914

Patent

active

042152020

ABSTRACT:
Low density, closed cell, soft foam products having dimensional stability are made from ethylenic resin blends having low stiffness by extrusion foaming, wherein the heat plastified gel comprises the ethylene polymer blend and at least one volatile blowing agent. The blends especially comprise a copolymer of ethylene and monoethylenically unsaturated carboxylic acid and a copolymer of ethylene and at least one monoethylenically unsaturated non-ionic comonomer. The starting ethylenic resin blends are preferably blends of ethylene acrylic acid copolymers and ethylene vinyl acetate copolymers, having stiffness less than about 20,000 psi. Exemplary volatile blowing agents are 1,2-dichlorotetrafluoroethane, 1-chloro-1,2,2,2-tetrafluoroethane and 2,2-difluoropropane.

REFERENCES:
patent: 3766099 (1973-10-01), Kawai et al.
patent: 3960792 (1976-06-01), Nakomura
patent: 4091136 (1978-05-01), O'Brien et al.
patent: 4101467 (1978-07-01), Park et al.
patent: 4102829 (1978-07-01), Watanabe et al.
patent: 4110269 (1978-08-01), Ehrenfreund
patent: 4129530 (1978-12-01), Park et al.

Affiliated with

Also associated with

Rating

Soft ethylenic polymer blend foams does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Soft ethylenic polymer blend foams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft ethylenic polymer blend foams will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-905550