Polymers with crystallizable fluoropolymers

• US 5,641,844 A
• Filed: 12/13/1995
• Issued: 06/24/1997
• Est. Priority Date: 12/13/1995
• Status: Expired due to Term

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Shen, Ya Xi, Thompson, Robert M.
• Primary Examiner(s): Schofer, Joseph L.
• Assistant Examiner(s): SAROFIM, NABIL F
• Application Number:
  US08/571,376
• Time in Patent Office: 559 Days
• Field of Search: 526/245, 427/244, 427/389.9, 427/392, 427/393.5
• US Class Current: 526/245
• CPC Class Codes: C07C 69/653 Acrylic acid esters; Methacrylic acid esters; Haloacrylic acid esters; Halomethacrylic acid esters
• CPC Class Codes: C08F 20/22 Esters containing halogen
• CPC Class Codes: D06M 15/277 containing fluorine

Abstract

This invention relates to polymers having pendant side groups of:

--(CH.sub.2).sub.m --(CF.sub.2).sub.n F

wherein m is 10, and n is 10 and more in which the amount of the monomer containing the moiety --(CF₂)₁₀ F constitutes about 50% or more of the total percent of all the monomers. By adjusting the number of --CH₂ -- groups to 10 and adjusting the distribution within the --(--CF₂)_m F groups, it has been discovered that the particular side group configuration forms crystalline regions that reduce mobility of the side chains and thereby improves the repellency of materials coated with the polymers of the invention.

Claims

1. An organic polymer containing recurring units derived from organic monomers which have a segment in each monomer of the formula:

space="preserve" listing-type="equation">--(CH.sub.2).sub.10 --(CF.sub.2).sub.n F

wherein n is a mixture of integers of 10 and more, in which the amount of the monomer containing the moiety;

space="preserve" listing-type="equation">--(CH.sub.2).sub.10 --(CF.sub.2).sub.10 F

constitutes at least 50% or more of the total weight of all such monomers whose units are present in the polymer.

2. The organic polymer of claim 1 wherein the organic monomers that the polymer is derived from are acrylate or methacrylate monomers.

3. The organic polymer of claim 1 in the form of a liquid emulsion or solution of the polymer.

4. The organic polymer of claim 2 in which the melting point of the polymer is between 80°

C. and 150°

C. and in which the 1+cos θ

value of the receding contact angle is less than 0.55.

5. The organic polymer of claim 4 in the form of a liquid emulsion or solution of the polymer.

6. The organic polymer of claim 4 wherein the recurring units are all derived from acrylate or methacrylate monomers.

7. Process for coating an article with a polymer of claim 1 which comprises applying said polymer to the surface of an article.

8. Process of claim 7 wherein the article is selected from the class consisting of fibers, fabrics, filter media, films and membranes.

9. Process for coating an article with a polymer of claim 4 which comprises applying said polymer to the surface of an article.

10. Process of claim 9 wherein the article is selected from the class consisting of fibers, fabrics, filter media, films and membranes.