Mechanically compatible polyurethane/polyolefin thermoplastic po

Details Mechanically compatible polyurethane/polyolefin thermoplastic po Mechanically compatible polyurethane/polyolefin thermoplastic po

Filed on

1988-08-01

Date issued

1991-02-05

Examiner

Carrillo, Ana L.

Patent Class

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

SubClass

Synthetic resins

SubSubClass

At least one aryl ring which is part of a fused or bridged...

Other Related Categories

525131, C08L 7504, C08K 340

Type

Patent

Status

active

Patent number

049905570

Description

ABSTRACT:
Polymeric blends of thermoplastic polyurethane elastomers and crystalline or predominately crystalline polyolefin thermoplastics are produced by high shear mixing of melts of the respective polymers. The stabilized mechanically compatible blend of the ordinarily thermodynamically incompatible polymers comprises from about 3.5 to 20 parts by weight of a polyolefin homopolymer or copolymer with 100 parts by weight of polyurethane. The mechanically compatible polymeric blend is particularly useful for molding plastic articles by injection molding, extrusion, calendering or similar process for molding thermoplastic articles.

REFERENCES:
patent: 3272890 (1966-09-01), O'Leary, Jr.
patent: 3929928 (1975-12-01), Wolf, Jr.
patent: 4238574 (1980-12-01), Megna
patent: 4342847 (1982-08-01), Goyert et al.
patent: 4423185 (1983-12-01), Matsumoto et al.
patent: 4500671 (1985-02-01), Goyert et al.
patent: 4883837 (1989-11-01), Zabrocki
"Organic Coatings Plastics Chemistry", vol. 40, p. 664, (1979).
Walker's "Handbook of Thermoplastic Elastomers", Section 5.4.17.

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