Preparation of a self-bonding thermoplastic elastomer using an in situ adhesion promoter

Patent metadata

Field	Value
Publication number	US-10023776-B2
Application number	US-33663008-A
Country	US
Kind code	B2
Filing date	Dec 17, 2008
Priority date	Dec 21, 2007
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

The invention describes compositions that include amine-containing silsesquioxane or an amine-containing alkyltrialkoxysilane and a thermoplastic elastomer as well as methods of preparation of the compositions that are useful as self-bonding adhesives for various substrates.

First claim

What is claimed is:

1. An article comprising:
a first layer comprising a fluoropolymer or a polymeric material comprising hydroxyl groups; and
a second layer adjacent to the first layer, the second layer comprising a self-bonding composition comprising a mixture of an adhesion promoter comprising the formula:

wherein a is an integer from about 1 to about 3,000;
wherein b is an integer from about 1 to about 3,000;
wherein c is an integer from 1 to about 3,000;
wherein R 1 is a branched or unbranched C1 to C6 hydrocarbon;
wherein R 2 and R 3 are each independently a branched or unbranched C1 to C6 hydrocarbon;
wherein at least one of R 4 and R 5 are each independently a branched or unbranched C1 to C6 hydrocarbon substituted with NH 2 , NHR 6 or NR 6 R 7 or a branched or unbranched C1 to C6 hydrocarbon, provided at least one of R 4 or R 5 is substituted with NH 2 , NHR 6 or NR 6 R 7 ;
wherein R 6 and R 7 are each independently a branched or unbranched C1 to C6 hydrocarbon;
wherein each X and Y, independently, is a covalent bond, a Si atom, R 8 or a hydrogen atom, wherein R 8 is a branched or unbranched C1 to C6 hydrocarbon, wherein the Si atom can be attached to an oxygen atom, R 8 or R 4 ;
and a thermoplastic polyurethane elastomer,
wherein the adhesion promoter is present from about 0.1 weight % to about 5.0 weight % of the total weight of the thermoplastic polyurethane elastomer.

2. The article of claim 1 , wherein R 2 , R 3 , and one or less of R 4 and R 5 are each methyl groups.

3. The article of claim 1 , wherein one of R 4 or R 5 is substituted with NH 2 or NHR 6 .

4. The article of claim 3 , wherein the R 4 and R 5 are each independently an unbranched C1 to C6 hydrocarbon substituted with NH 2 , NHR 6 or NR 6 R 7 , the unbranched C1 to C6 hydrocarbon is an alkyl group, and the amino group is at the terminal end of the alkyl group.

5. The article of claim 1 , wherein the adhesion promoter is present from about 0.5 weight % to about 1.5 weight % of the total weight of the thermoplastic polyurethane elastomer.

6. The article of claim 1 , wherein the first layer comprises a fluoropolymer.

7. The article of claim 1 , wherein the first layer comprises FEP, PFA, MFA, ETFE, ECTFE, PCTFE, PVDF, THV, or a combination thereof.

8. The article of claim 1 , wherein the first layer comprises EVOH.

9. The article of claim 1 , further comprising a third layer adjacent to the second layer, wherein the second layer bonds the first layer to the third layer.

10. The article of claim 1 , wherein the self-bonding composition has been subjected to post-cure treatment, and wherein the peel strength of the self-bonding composition to the first layer is at least about 10 ppi, when tested in a 180°-peel configuration in a peel strength test.

Assignees

• Ou Duan Li
• Saint Gobain Performance Plastics Corp

Inventors

• Ou Duan Li

Classifications

• Y10T428/3154

  Of fluorinated addition polymer from unsaturated monomers · CPC title

• C08G77/045

  containing less than 25 silicon atoms · CPC title

• C08L83/08

  containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen · CPC title

• Y10T428/31612

  As silicone, silane or siloxane · CPC title

• C08L29/04

  Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids · CPC title