Fluorine-containing water-repellent oil-repellent composition

• US 5,021,501 A
• Filed: 12/11/1989
• Issued: 06/04/1991
• Est. Priority Date: 05/28/1986
• Status: Expired due to Term

• Current Assignee: Daikin Industries Ltd
• Original Assignee: Daikin Industries Ltd
• Inventors: Inukai, Hiroshi, Ohmori, Akira
• Primary Examiner(s): Schofer, Joseph L.
• Assistant Examiner(s): Mulcahy, Peter D.
• Application Number:
  US07/445,950
• Time in Patent Office: 540 Days
• Field of Search: 524/544, 524/545, 524/546, 526/245
• US Class Current: 524/544
• CPC Class Codes: D06M 15/277 containing fluorine

Abstract

The present invention provides a fluorine-containing water- and oil-repellent composition comprising a fluorine-containing acrylate represented by the formula: ##STR1## wherein X is a fluorine atom or --CFX¹ X² group (wherein X¹ and X² are the same or different and are each a hydrogen atom or fluorine atom), Y is alkylene having 1 to 3 carbon atoms, --CH₂ CH₂ N(R)SO₂ -- group (wherein R is alkyl having 1 to 4 carbon atoms) or --CH₂ CH(OZ)CH₂ -- (wherein Z is a hydrogen atom or acetyl), and Rf is fluoroalkyl having 3 to 21 carbon atoms, or fluoroalkyl having 3 to 21 carbon atoms and 1 to 10 oxygen atoms in its carbon chain (wherein no two oxygen atoms are present adjacent to each other).

Claims

1. A method of providing improved water- and oil-repellent properties to an article selected from the group consisting of textile and leather articles, the method comprising applying to said article a composition comprising a fluorine-containing polymer which comprises at least 10 mole % of a fluorine-containing acrylate represented by the formula:

##STR15## wherein X is a fluorine atom or --CFX¹ X² group wherein X¹ and X² are the same or different and are each a hydrogen atom or fluorine atom, Y is alkylene having 1 to 3 carbon atoms, --CH₂ CH₂ N(R)SO₂ --group wherein R is alkyl having 1 to 4 carbon atoms or --CH₂ CH(OZ)CH₂ --wherein Z is a hydrogen atom or acetyl, and Rf is fluoroalkyl having 3 to 21 carbon atoms, or fluoroalkyl having 3 to 21 carbon atoms and 1 to 10 oxygen atoms in its carbon chain wherein no two oxygen atoms are present adjacent to each other.

2. A method as defined in claim 1 wherein the group Rf in the fluorine-containing acrylate represented by the formula (1) is a group represented by the formula:

space="preserve" listing-type="equation">--((CF.sub.2 CF.sub.2).sub.m (O).sub.n).sub.q CF(RF.sup.1)CF.sub.3

wherein m is an integer of from 1 to 5, n is 0 to 1, q is an integer of from 1 to 5, and Rf¹ is a fluorine atom or trifluoromethyl, those represented by the formula;

##STR16## wherein p is an integer of from 0 to 5, and Rf¹ is as defined above, or those represented by the formula;

space="preserve" listing-type="equation">--Ph--Rf.sup.2

wherein Ph is phenylene, and Rf² is perfluoroalkyl having 5 to 15 carbon atoms.

3. A method as defined in claim 1 wherein the composition comprises:

(i) 10 to 90 mole % of the fluorine-containing acrylate represented by the formula (1), and

(ii) 90 to 10 mole % of an ethylenically unsaturated monomer.

4. A method as defined in claim 3 wherein the ethylenically unsaturated monomer is at least one of a monomer represented by the formula:

##STR17## wherein A is a hydrogen atom, chlorine atom or methyl and B is alkyl having 1 to 20 carbon atoms, alicyclic group having 6 to 8 carbon atoms or fluoroalkyl having 1 to 10 carbon atoms;

ethylene, propylene, styrene; and

(metha)acrylate having vinyl, hydroxyl, carboxyl, glycidyl, dialkylamino or trialkoxysilyl.

5. A method as defined in claim 1 wherein the composition is in the form of a solution.

6. A method as defined in claim 1 wherein the composition is in the form of an aqueous dispersion.