Hydrophilic coatings for textile materials

• US 4,352,917 A
• Filed: 09/18/1980
• Issued: 10/05/1982
• Est. Priority Date: 09/18/1980
• Status: Expired due to Term

• Current Assignee: Wacker Silicones Corporation
• Original Assignee: SWS Silicones Corporation
• Inventors: Tripp, Jeffrey A.
• Primary Examiner(s): Marquis, Melvyn I.
• Application Number:
  US06/188,210
• Time in Patent Office: 747 Days
• Field of Search: 525/474, 525/479, 528/28, 528/14, 528/21, 528/26, 556/483, 556/413, 556/418, 556/416, 556/437, 556/436
• US Class Current: 528/26
• CPC Class Codes: C08G 65/336 containing silicon
• CPC Class Codes: C08G 81/025 containing polyether sequences
• CPC Class Codes: D06M 15/647 containing polyether sequences
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

Silylated organic polymers which may be applied to textile materials to impart hydrophilic properties thereto are prepared by reacting polymeric organic acids with silylated aminofunctional polyethers. The resultant composition may then be crosslinked to impart durable hydrophilic properties to textile materials treated therewith.

Claims

1. A process for preparing silylated organic polymers which comprises reacting a polymeric organic acid containing at least one acid group per molecule which is obtained from the polymerization of an organic acid having aliphatic unsaturation with a silylated aminofunctional polyether at a temperature of from -10°

C. to 200°

C., in which the silylated aminofunctional polyether has the formula;

##STR20## wherein R is a radical selected from the group consisting of;

##STR21## R¹ is selected from the class consisting of hydrogen, a monovalent hydrocarbon radical and a silicon containing radical selected from the group consisting of;

##STR22## and when R is ##STR23## A is an anionic silicon containing radical selected from the group consisting of;

##STR24## and when R is ##STR25## then A is selected from the group consisting of hydrogen, a monovalent hydrocarbon radical, and a silicon containing radical selected from the group consisting of;

##STR26## R² is a divalent radical, R³ is a monovalent hydrocarbon radical having from 1 to 18 carbon atoms, R⁴ is a divalent hydrocarbon radical selected from the group consisting of (CH₂)_y, CH═

CH or a cyclic hydrocarbon radical selected from the group consisting of C₆ H₄, C₆ H₈, C₆ H₁₀ and C₁₀ H₆, R⁵ is selected from the group consisting of hydrogen and a monovalent hydrocarbon radical, with the proviso that at least one A or R¹ is a silicone containing radical, a is a number of from 0 to 4, e is 0, 1, 2 or 3, n is a number of from 2 to 4, x is a number of from 1 to 600 and y is a number of from 0 to 16.

2. The process of claim 1, wherein the reaction between the silylated aminofunctional polyether and polymeric organic acid is conducted in the presence of a basic compound selected from the group consisting of alkali metal hydroxides, alkali metal alkoxides, amines, amine terminated polyethers and ammonia.

3. The process of claim 1, wherein the polymeric organic acid is first reacted with a basic compound selected from the group consisting of alkali metal hydroxides, alkali metal alkoxides, amines, amine terminated polyethers and ammonia to partially neutralize a portion of the polymeric organic acid groups, and then reacted with a silylated aminofunctional polyether.

4. The process of claim 1, wherein the silylated organic polymers are reacted with a basic compound selected from the group consisting of alkali metal hydroxides, alkali metal alkoxides, amines, amine terminated polyethers and ammonia.

5. The process of claim 1, wherein the silylated aminofunctional polyether has the formula:

##STR27## wherein x is a number of from 1 to 600.

6. The process of claim 1, wherein the polymeric organic acid is an acrylic acid polymer.

7. The process of claim 1, wherein the silylated aminofunctional polyether and polymeric organic acid are present in such an amount that an average of at least one acid group per molecule of the polymeric organic acid is reacted with the silylated aminofunctional polyethers.

8. The process of claim 1, wherein an average of from 1 to 100 percent of the equivalents of acid per gram of polymeric organic acid is reacted with the silylated aminofunctional polyether.

9. The process of claim 8, wherein an average of from 10 to 50 percent of the equivalents of acid per gram of polymeric organic acid are reacted with the silylated aminofunctional polyether.

10. The process of claim 1, wherein an average of from 1 to 100 percent of the equivalents of acid per gram of polymeric organic acid are reacted with the silylated aminofunctional polyether and basic compound selected from the group consisting of alkali metal hydroxides, alkali metal alkoxides, amines, amine terminated polyethers and ammonia, with the proviso that at least one acid group is reacted with the silylated aminofunctional polyether.

11. The process of claim 1, wherein the reaction is conducted in the presence of a diluent.

12. The process of claim 1, wherein the diluent is a solvent for the silylated aminofunctional polyether and the polymeric organic acid.

13. The product obtained from the process of claim 1.

14. The product obtained from the process of claim 2.

15. The product obtained from the process of claim 3.

16. The product obtained from the process of claim 4.