Surface segregation through the use of a block copolymer

Details Surface segregation through the use of a block copolymer Surface segregation through the use of a block copolymer

1992-11-06

1994-08-09

Michl, Paul R.

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

Synthetic resins

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

524261, 524269, 524505, 524588, C08K 554, C08L 5300, C08L 8312

Patent

active

053367073

ABSTRACT:
A surface-segregatable, melt-extrudable thermoplastic composition is provided which includes (A) a thermoplastic polypropylene-polyethylene block copolymer in which the polyethylene blocks constitute from about 1 to about 10 percent by weight of the copolymer and (B) a defined trisiloxane polyether additive having a molecular weight of from about 350 to about 1,400, which additive is present in an amount of from about 0.1 to about 5 percent by weight, based on the amount of thermoplastic block copolymer. The use of the block copolymer unexpectedly permits the use of significantly reduced amounts of additive while still providing nonwoven webs which are immediately wettable and which do not become significantly less wettable over time.

REFERENCES:
patent: Re32514 (1987-10-01), Steklenski
patent: 3491137 (1970-01-01), Zaweski et al.
patent: 3502763 (1970-03-01), Hartmann
patent: 3723402 (1973-03-01), Owen et al.
patent: 4446090 (1984-05-01), Lovgren et al.
patent: 4535113 (1985-08-01), Foster et al.
patent: 4578414 (1986-03-01), Sawyer et al.
patent: 4689362 (1987-08-01), Dexter
patent: 4857251 (1989-08-01), Nohr et al.
patent: 4920168 (1990-04-01), Nohr et al.
patent: 4923914 (1990-05-01), Nohr et al.
patent: 4931492 (1990-06-01), Foster et al.
patent: 5057262 (1991-01-01), Nohr et al.
patent: 5120888 (1992-06-01), Nohr et al.

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