Stabilization of polyesteramides with urethanes

Details Stabilization of polyesteramides with urethanes Stabilization of polyesteramides with urethanes

Filed on

1982-08-09

Date issued

1983-11-15

Examiner

Hoke, Veronica P.

Patent Class

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

SubClass

Synthetic resins

SubSubClass

Processes of preparing a desired or intentional composition...

Other Related Categories

524199, 525424, C08K 520, C08L 7712

Type

Patent

Status

active

Patent number

044156936

Description

ABSTRACT:
Disclosed are novel compositions comprising blends of at least about 75 percent by weight of a polyesteramide and the balance of the blends comprising a urethane containing ingredient. Optionally, an antioxidant component is present in the blends.
The blends display an unexpected level of stability in regard to their tensile properties when exposed to elevated temperatures.
The blends find particular utility in the area of hoses, gaskets, seals, etc., used in handling fluids at elevated temperatures.

REFERENCES:
patent: 3272774 (1966-09-01), Moyer
patent: 3468975 (1969-09-01), Duxbury et al.
patent: 3849514 (1974-11-01), Gray et al.
patent: 3896078 (1975-07-01), Hoeschele
patent: 3904706 (1975-09-01), Hoeschele
patent: 4129715 (1978-12-01), Chen et al.
patent: 4182842 (1980-01-01), Jackson et al.
patent: 4384083 (1983-05-01), Baker

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