Blend of high-molecular-weight polypropylene and high-molecular

Details Blend of high-molecular-weight polypropylene and high-molecular Blend of high-molecular-weight polypropylene and high-molecular

1997-05-22

1999-10-05

Seidleck, James J.

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

Synthetic resins

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

525323, 525249, 525 88, 525247, 5261241, 5261245, 5261247, 5261253, 526126, C08F25504, C08F 4655, C08F 4656

Patent

active

059625953

ABSTRACT:
The invention relates to a high-molecular-weight reactor blend comprising a high-molecular weight polypropylene and a high-molecular weight ethylene-propylene copolymer and having an ethylene content in the range from 0.1 to 2% by weight based on the total amount of blend, a melt flow index MFR (230/5) of .ltoreq.5 dg/min and a molecular weight distribution M.sub.w /M.sub.n in the range from 6 to 20.

REFERENCES:
patent: 5344885 (1994-09-01), Kersting et al.
patent: 5536789 (1996-07-01), Schwager et al.

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