Poly(arylene thioether-ketones) improved in melt stability and p

Details Poly(arylene thioether-ketones) improved in melt stability and p Poly(arylene thioether-ketones) improved in melt stability and p

1989-11-03

1991-04-16

Foelak, Morton

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

Synthetic resins

Treating polymer containing material or treating a solid...

528226, 528388, C08F28300

Patent

active

050083708

ABSTRACT:
Disclosed herein is a process for the preparation of a poly(arylene thioether-ketone) improved in melt stability, which comprises subjecting a poly(arylene thioether-ketone) (PTK) to a heat treatment for 5-5.times.10.sup.3 minutes in a powdery state and a temperature range of 200.degree.-350.degree. C. The PTK has predominant recurring units of the formula ##STR1## and has a melting point, Tm of 310.degree.-380.degree. C., a melt crystallization temperature, Tmc (420.degree. C./10 min) of at least 210.degree. C., a residual melt crystallization enthalpy, .DELTA.Hmc (420.degree. C./10 min) of at least 10 J/g and a reduced viscosity of 0.2-2.0 dl/g. PTKs improved in melt stability and prepared in accordance with the above-described preparation process are also disclosed.

REFERENCES:
patent: 4690972 (1987-09-01), Johnson et al.
patent: 4716212 (1987-12-01), Gaughan
D. Mukherjee et al., "Preparation & Characterisation of Poly(4,4'-benzophenone Sulphide)", Depart of Chemistry, Indian Institute of Technology, Aug. 1981, pp. 501-502.

Affiliated with

Also associated with

Rating

Poly(arylene thioether-ketones) improved in melt stability and p does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Poly(arylene thioether-ketones) improved in melt stability and p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Poly(arylene thioether-ketones) improved in melt stability and p will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-422086