Injection-molding polyolefin composition

Details Injection-molding polyolefin composition Injection-molding polyolefin composition

1989-12-11

1991-05-28

Seccuro, Carman J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525324, C08L 2304, C08L 2306

Patent

active

050196278

ABSTRACT:
An injection-molding polyethylene composition consisting essentially of ultrahigh-molecular-weight polyethylene having a molecular weight of at least about 1,650,000 and low-molecular-weight to high-molecular-weight polyethylene having a molecular weight of, for example, about 1500 to about 360,000. This composition is produced by a multistep polymerization process comprising a step of producing the ultrahigh-molecular-weight polyethylene and a step of producing the low-molecular-weight or high-molecular-weight polyethylene.

REFERENCES:
patent: 4311752 (1982-01-01), Diedrich et al.
patent: 4336352 (1982-06-01), Sakurai et al.
patent: 4786687 (1988-11-01), Sano et al.
patent: 4792588 (1988-12-01), Suga et al.
patent: 4933393 (1990-06-01), Toyota et al.

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