Polyamide solution composition and methods for producing fibrids

Details Polyamide solution composition and methods for producing fibrids Polyamide solution composition and methods for producing fibrids

1995-12-29

1998-03-03

Hampton-Hightower, P.

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

Synthetic resins

From carboxylic acid or derivative thereof

528312, 528322, 528335, 528336, 524600, 524606, 47 58, C08G 7310, C08L 7706, C08L 7900

Patent

active

057235686

ABSTRACT:
A polyamide comprising a solution of (i) an aliphatic polyamide and/or an aliphatic aromatic poly amide dissolved in (ii) N-methyl-2-pyrrolidone and containing (iii) calcium chloride, the ratio between the polyamide (i) and the N-methyl-2-pyrrolidone (ii) in the solution composition being 3 to 25% by weight of the polyamide (i)to 97 to 75% by weight of the N-methyl-2-pyrrolidone, (ii) with the solution also containing calcium chloride (iii) in an amount of 5 to 60 parts by weight based on 100 parts by weight of the polyamide (i) which can be precipitated in a precipitant consisting essentially of water while stirring the precipitant to provide fibrids, which then can be mixed with fibers or natural pulp and formed into synthetic paper.

REFERENCES:
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Database WPI, Section Ch, Week 9006, Derwent Publications Ltd., London, GB; Class A 23, AN 90-039864SPOO2992580 & JP-A-01 315 464 (Asahi Chemical Ind. KK), 20 Dec. 1989 (abstract).
Database WPI, Section ch, Week 9109, Derwent Publications Ltd,. London, GB; Class A32, AN 91-061426XPOO2002581 & JP-A-03 009 931 (Asahi Chemical Ind. KK), 17 Jan. 1991 (abstract).
Database WPI, Section Ch, Week 7746, Derwent Publications Ltd., London GB; Class A97, AN 77-81863YXPOO2002582 & JP-A-52 118 006 (Teijin KK), 4 Oct. 1977 (abstract).
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