Copolyester-diol polycarbonates, process for producing them and

Details Copolyester-diol polycarbonates, process for producing them and Copolyester-diol polycarbonates, process for producing them and

1989-10-10

1992-05-26

Kight, III, John

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 76, 528 80, 528 83, 528 85, 528367, 528370, 528372, C08G 1844, C08G 1832

Patent

active

051169290

ABSTRACT:
Copolyester-diol polycarbonates fluid at room temperature, having a number average molecular weight comprised within the range of from 1,500 to 6,000 with a glass transition temperature (T.sub.g) lower than -45.degree. C., useful in the sector of polyurethanes and in the sector of sealants, are obtained by means of a reaction of transesterification by starting from:

REFERENCES:
patent: 4996283 (1991-02-01), Grieco et al.

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