D - Textiles – Paper – 06 – M
Patent
D - Textiles, Paper
06
M
8/93.15
D06M 13/292 (2006.01) D06M 13/513 (2006.01) D06M 15/643 (2006.01)
Patent
CA 2015744
CARDABLE HYDROPHOBIC POLYPROPYLENE FIBER ABSTRACT OF DISCLOSURE Disclosed is a method for treating polyolefin-containing spun fibers or filaments to increase their processability, in which the fibers or filaments are treated treated with a first modifier composition comprising from about 70% to 100% by weight of of a neutralized phosphoric acid ester having the formula Image (1) in which Alk is an lower alkyl group having 1-8 carbon atoms; R is an amino group or an alkali metal, n and m are each a positive number of not less than about 1, the sum of which is about 3; and from 0 to about 30% by weight of a polysiloxane having the formula Image (2) wherein X and Y are individually defined as a hydrophobic chemical end group such as a lower alkyl group; R' is a lower alkyl group, and 0 is a positive number within the range of about 10-50 or higher; and the fibers or filaments are sub- sequently treated with a second modifier composition compris- ing about 70%-100% by weight of the said polysiloxane and from 0 to about 30% by weight of the said neutralized phos- phoric acid ester.
Hercules Incorporated
Moffat & Co.
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