Fluorinated water soluble copolymers

Details Fluorinated water soluble copolymers Fluorinated water soluble copolymers

2007-10-29

2010-11-09

Salvatore, Lynda (Department: 1786)

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Coated or impregnated woven, knit, or nonwoven fabric which...

Coating or impregnation improves soil repellency, soil...

C442S094000

Reexamination Certificate

active

07829477

ABSTRACT:
A method of providing water repellency, oil repellency, soil resistance, soil release, stain resistance and stain release to substrates comprising contacting said substrate with a composition comprising a copolymer having repeating units of Formula 1 in any sequence:whereinRfis a straight or branched perfluoroalkyl group having from about 2 to about 8 carbon atoms, or a mixture thereof, which is optionally interrupted by at least one oxygen atom,Q is alkylene of 1 to about 15 carbon atoms, hydroxyalkylene of 2 to about 15 carbon atoms, —O(CnH2n)—, —(CH2CF2)m(CH2)n—, —CONR1(CnH2n)—, —(CnH2n)OCONR1(CnH2n)—, (—CONR1CH2)2CH—, —SO2N(R1)(CnH2n)—, or —(CnH2n)SO2N(R1)(CnH2n)—,each R1is independently H or alkyl of 1 to about 4 carbon atoms,each n is independently 1 to about 15,each m is independently 1 to about 4,Z is hydrogen or methyl,x is a positive integer,y is zero or a positive integer,t is a positive integer, andM is H+, alkali metal cation, alkaline earth metal cation, or ammonium.

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