Process for the preparation of polyester polyols, based on 2-met

Details Process for the preparation of polyester polyols, based on 2-met Process for the preparation of polyester polyols, based on 2-met

1987-04-09

1988-03-15

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521173, 528 81, 528 83, 528272, 528296, 528300, 560198, C08G 1814

Patent

active

047313927

ABSTRACT:
This invention relates to polyester polyols which are liquid at 25.degree. C. and contain units having the structure --OCH.sub.2 --CH(CH.sub.3)--CH.sub.2 CH.sub.2 O-- which are bound together and have an average functionality of from about 2 to 3, a hydroxyl number of from about 25 to 300, an acid number of less than about 2, and a viscosity of from about 200 to 10.sup.5 mPas at 25.degree. C. The polyols are prepared through polycondensation in the molten state, in the presence of or absence of esterification catalysts, of an aliphatic di- and/or polycarboxylic acid and/or di- and/or polycarboxylic acid ahydride and 2-methyl-1,4-butanediol or mixtures comprised of 2-methyl-1,4-butanediol and at least one linear or branched, aliphatic di- through tetravalent alcohol, which optionally contains ether bridges and has a 2-methyl-1,4-butanediol content of at least 20 weight percent based on the weight of the alcohol mixture. The polyester polyols are suited for the preparation of non-cellular or cellular polyurethane plastics or polyurethane-polyurea plastics and preferably polyurethane elastomers, using the polyisocyanates addition polymerization process.

REFERENCES:
patent: 3859257 (1975-01-01), Schade et al.

Affiliated with

Also associated with

Rating

Process for the preparation of polyester polyols, based on 2-met 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 the preparation of polyester polyols, based on 2-met, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of polyester polyols, based on 2-met will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1926783