Process for producing biaxially oriented paraphenylene sulfide b

Details Process for producing biaxially oriented paraphenylene sulfide b Process for producing biaxially oriented paraphenylene sulfide b

1986-12-22

1988-09-27

Thurlow, Jeffery

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

2642102, 2642893, 2642902, 26433111, 428419, 428704, 525537, 528388, B29C 4700, B29C 5512, B29C 5514, C08G 7514

Patent

active

047742984

ABSTRACT:
Disclosed herein is a process for producing a biaxially oriented paraphenylene sulfide block copolymer film, comprising melt extruding and molding a paraphenylene sulfide block copolymer essentially composed of recurring units (A): ##STR1## and recurring units (B): ##STR2## the molar fraction of recurring units (A) being 0.50-0.98, and having a melt viscosity (.eta.*) of 1,000-50,000 poises as measured at 310.degree. C. and shear rate of 200 sec.sup.-1, into a film, and after cooling, biaxially stretching the thus molded film at a stretching temperature (T) defined by the following formula:

REFERENCES:
patent: 3869434 (1975-03-01), Campbell et al.
patent: 4286018 (1981-08-01), Asakura et al.
patent: 4370469 (1983-01-01), Deguchi et al.
patent: 4426479 (1984-01-01), Deguchi et al.
patent: 4629778 (1986-12-01), Sugie et al.

Affiliated with

Also associated with

Rating

Process for producing biaxially oriented paraphenylene sulfide b 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 for producing biaxially oriented paraphenylene sulfide b, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing biaxially oriented paraphenylene sulfide b will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2398443