Polyester amides suitable for injection molding

Details Polyester amides suitable for injection molding Polyester amides suitable for injection molding

1978-01-16

1978-12-12

Cockeram, H.S.

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 48, 528 51, 528 84, 528906, C08G 1812, B29F 108, C08G 1834

Patent

active

041297156

ABSTRACT:
Substantially linear, segmented polyester amides are described which contain aromatic residues in the "hard" segments but which still possess sufficiently low melt properties to be injection moldable. The polyester amides are obtained by reacting a carboxylic acid-terminated prepolymer (derived by reacting an excess of a dicarboxylic acid with a polymeric diol of molecular weight 400 to 4000) with a stoichiometric amount of methylenebis(phenyl isocyanate) or toluene diisocyanate or mixtures of these isocyanates and, optionally, a dicarboxylic acid.

REFERENCES:
patent: 3317480 (1967-05-01), Fetscher et al.
patent: 3419510 (1968-12-01), Hudak
patent: 3577380 (1971-05-01), Binder
patent: 3810956 (1974-05-01), Kimura et al.
patent: 3836491 (1974-09-01), Taft et al.
patent: 3843587 (1974-10-01), Keating et al.
patent: 3922295 (1975-11-01), Tilley
patent: 3928290 (1975-12-01), Cohen et al.

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