E.i. Dupont De Nemours and Company

Engelbert Pechhold

Peter Michael Murphy

Ivan M Robinson

Robert Craig Buck

Donald Douglas May

Fluorine-containing maleic acid terpolymer soil and stain resists

Polymers having pendant fluoroalkylsulfide side chains and processes for their preparation by nucleophilic displacement of halides in preformed polymers using fluoroalkylthiols are disclosed which provide oil and water repellency and antisoil properties to substrates.

Polymers with pendant fluoroalkylsulfide groups

A terpolymer having units of Formula I ##STR1## wherein X is a C.sub.2-10 alkyl, C.sub.6-12 aryl, or C.sub.4-12 alkoxy radical,

A polyamide fibrous substrate having deposited on it an amount of a composition effective to impart stain-resistance comprising a water-soluble or water-dispersible alpha-olefin/maleic anhydride polymer or a mixture of said polymers, and processes for preparing the substrates. The maleic anhydride polymer is used either in hydrolyzed form or in the form resulting from reacting it with a lower alkyl alcohol so as to form an alpha-olefin/maleic acid monalkyl ester polymer.

Maleic anhydride/olefin polymer stain-resists

A copolymer having units of Formula II: ##STR1## wherein M is H, alkali metal, anmonium cation, or a mixture thereof; N is OM or a mixture of OM, OR, and NR.sub.1 R.sub.2 in a molar ratio of (OM):(OR):(NR.sub.1 R.sub.2) of �1-(e+f)!:e:f, wherein e and f are each independently 0 to 0.5, provided that (e+f) is less than 0.8; R, R.sub.1, and R.sub.2 are each independently H or a branched or straight chain C.sub.1-20 alkyl; Y is a C.sub.2-10 alkyl, C.sub.6-12 aryl, or C.sub.4-12 alkoxy; X is a fluorinated thiol radical; Z is H; and v and w are each a positive number such that the molar ratio of v to w is from about 0.4:1 to about 1.3:1 is disclosed.

Maleic acid copolymers with fluorinated thioether end cap

A composition of partial esters or thioesters formed from copolymers of maleic anhydride and perfluoroalkyl alcohols or perfluoroalkyl thiols is disclosed, and a process for providing soil and stain resistance to fibers by application of such partial esters or thioesters.

Partial fluoroesters or thioesters of maleic acid polymers and their use

The present invention comprises a process for providing soil resistance and resistance to staining by acid dyes to fibers and textiles by simultaneous or sequential application of a sulfonated phenol-formaldehyde condensation product and partial fluoroesters or fluorothioesters formed from copolymers of maleic anhydride and perfluoroalkyl alcohols or perfluoroalkyl thiols.

Treatment of polyamide materials with partial fluoroesters or

A copolymer having units of Formula II: ##STR1## wherein M is H, alkali metal, ammonium cation, or a mixture thereof;

Maleic acid copolymers with fluorinated thioether end-cap

A composition which provides polyamide substrates with resistance to staining by acid dyes comprising (A) carboxylic acid-containing stain-resist polymers selected from:

Carboxylic acid-containing polymer/resole stain-resists

A stain-resist for polyamide textiles comprises blends of maleic anhydride/alpha-olefin polymers with sulfonated phenol-formaldehyde condensation products. The stain-resist blends are water-soluble at low pH, even in the absence of surfactant, and are strongly substantive and more resistant to yellowing than the condensation products.

Stain resists for polyamide substrates

Polyamide substrates treated with stain-resists which comprise blends of maleic anhydride/alpha-olefin polymers and sulfonated phenol-formaldehyde condensation products. Some of the stain-resist blends are water-soluble at low pH, even in the absence of surfactant, and are strongly substantive and more resistant to yellowing than the condensation products.

Stain-resistant polyamide substrates

Polyamide fibrous substrates which resist staining by acid dyes and discoloration upon exposure to UV light, and processes for preparing the same which comprise applying, at pH 2 to 10, a base-catalyzed condensation product formed by the reaction of a bis(hydroxyphenyl)sulfone with formaldehyde to give a product known as a resole.

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Chadds Ford, PA, United States of America

Engelbert Pechhold