Thermoplastic polyetherester block copolymers

Details Thermoplastic polyetherester block copolymers Thermoplastic polyetherester block copolymers

1988-12-30

1990-04-03

Kight, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528289, 528296, 528300, 5283086, 5283087, 525437, C08G 6302

Patent

active

049141783

ABSTRACT:
A polyetherester block copolymer has hard and soft segments of the structural formula ##STR1## wherein D is the non-hydroxylic residue of a saturated aliphatic or cyclic diol having 2 to 8 carbon atoms, R is the non-carboxylic residue of an aromatic of aliphatic or cyclic dicarboxylic acid wherein the residue has a molecular weight less than about 500, and G is a polyether having recurring oxyalkylene units and a molecular weight between about 300 and 4,000, and the polymer is branched as a result of having been made from monomers that include a primary or secondary amino branching agent.

REFERENCES:
patent: 4013624 (1977-03-01), Hoeschele
patent: 4250280 (1981-02-01), Tanaka et al.
patent: 4251652 (1981-02-01), Tanaka et al.
patent: 4315882 (1982-02-01), Hiratsuka et al.
patent: 4598117 (1986-07-01), Liu et al.
patent: 4611021 (1986-09-01), Zamek

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