Process of extruding polysulfone foam

Details Process of extruding polysulfone foam Process of extruding polysulfone foam

1981-04-24

1981-12-29

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 53, 264 54, 264DIG5, 521 87, 521 88, 521 95, 521 98, 521189, 521910, C08J 914

Patent

active

043083528

ABSTRACT:
A method for the preparation of polysulfone foam using methylene chloride as a blowing agent. A pressurized combination of heat-plastified foamable gel of polysulfone containing methylene chloride as a blowing agent is extruded into a zone of lower pressure through an orifice of a die. As the gel expands into a foam, it forms a product of decreased density, increased resiliency and flexibility, and improved insulation properties over conventional polysulfone foam.

REFERENCES:
patent: 3227784 (1966-01-01), Blades et al.
patent: 3389446 (1968-06-01), Parrish
patent: 3442829 (1969-05-01), Moore et al.
patent: 3542715 (1970-11-01), White et al.
patent: 3787363 (1974-01-01), Staniland et al.
patent: 3962154 (1976-06-01), Egli
patent: 4142029 (1979-02-01), Illy
patent: 4183822 (1980-01-01), Collington et al.
patent: 4190710 (1980-02-01), Fey
patent: 4258138 (1981-03-01), Britton

Affiliated with

Also associated with

Rating

Process of extruding polysulfone foam does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process of extruding polysulfone foam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of extruding polysulfone foam will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1019001