Foamable polyvinyl chloride compositions, foamed articles made t

Details Foamable polyvinyl chloride compositions, foamed articles made t Foamable polyvinyl chloride compositions, foamed articles made t

1994-04-14

1995-02-21

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

156 78, 156 79, 15624411, 521 79, 521 81, 521 94, 521140, 521145, 525 84, C08J 900

Patent

active

053915852

ABSTRACT:
Foamable thermoplastic resin compositions are provided having vinyl chloride polymer, a graft copolymer having a superstrate grafted to a substrate wherein the superstrate has alphamethyl styrene, unsaturated nitrile, and unsubstituted styrene therein, and the substrate is a butadiene rubber, a rubber-free copolymer having alkylmethacrylate, vinyl aromatic, and unsaturated nitrile therein, and a chemical blowing agent. The foamable thermoplastic resin composition may be coextruded with a non-foamed thermoplastic resin skin to produce a coextruded rigid foamed structure by a process of coextruding the skin and foamable thermoplastic composition. The composition and process are useful for making coextruded rigid foam structures which are useful in rigid foam applications such as foamed pipe and foamed sheet.

REFERENCES:
patent: 4041106 (1977-08-01), Ide et al.
patent: 4152495 (1979-05-01), Labar
patent: 4431772 (1984-02-01), Katto et al.
patent: 4613178 (1986-09-01), Fujita
patent: 4683247 (1987-07-01), Allen et al.
patent: 5095083 (1992-03-01), Deschamps et al.
Formulating Technology for Rigid Cellular PC Sheet, Szamborski & Pfennig, Journal of Vinyl Technology, Jun. 1992, vol. 14, No. 2, pp. 105-109.

Affiliated with

Also associated with

Rating

Foamable polyvinyl chloride compositions, foamed articles made t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Foamable polyvinyl chloride compositions, foamed articles made t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foamable polyvinyl chloride compositions, foamed articles made t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1930160