Method for making branched polyesters reproducibly

Details Method for making branched polyesters reproducibly Method for making branched polyesters reproducibly

1979-08-20

1980-08-12

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

528296, 528299, C08G 6304, C08G 6322

Patent

active

042174406

ABSTRACT:
A method for preparing branched polyesters in melt or solid phase comprises reacting together diols, diacids and polyfunctional modifiers having at least three functional radicals to form a condensation polymer. This condensation polymer is polycondensed to form a polyester by linear extension and branching while correlating catalyst activity, reaction temperature and pressure to restrain the extent of reaction for linear extension to within about 0.1 percent of the extent of reaction for branching.

REFERENCES:
patent: 3576773 (1971-04-01), Vaginay
patent: 3668187 (1972-06-01), King et al.
patent: 4013624 (1977-03-01), Hoeschele

Affiliated with

Also associated with

Rating

Method for making branched polyesters reproducibly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making branched polyesters reproducibly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making branched polyesters reproducibly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2183443