Silicon-containing compound, urethane resin, stretchable film, and method for forming the same

Patent metadata

Field	Value
Publication number	US-10696779-B2
Application number	US-201816156293-A
Country	US
Kind code	B2
Filing date	Oct 10, 2018
Priority date	Oct 13, 2017
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

The present invention provides a silicon-containing compound shown by the following formula (1):

wherein R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 each independently represent a linear, branched, or cyclic alkyl group having 1 to 6 carbon atoms, a phenyl group, a 3,3,3-trifluoropropyl group, or a group shown by —(OSiR 7 R 8 ) n —OSiR 9 R 10 R 11 ; R 7 , R 8 , R 9 , R 10 , and R 11 have the same meanings as R 1 to R 6 ; “n” is an integer in the range of 0 to 100; and “A” represents a linear or branched alkylene group having 1 to 6 carbon atoms. This provides a stretchable film that has excellent stretchability and strength, with the film surface having excellent repellency, and a method for forming the same; as well as a urethane resin used for the stretchable film; and a silicon-containing compound to be a material of the urethane resin.

First claim

The invention claimed is:

1. A urethane resin comprising a structure containing a (meth)acrylate group at a terminal thereof shown by the following formula (4):

wherein
R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 each independently respresent a linear, branched, or cyclic alkyl group having 1 to 6 atoms, a phenyl group, a 3,3,3-trifluoropropyl group, or a group shown by -( 0 SiR 7 R 8 ) n -OSiR 9 R 10 R 11 ;
R 7 , R 8 , R 9 , R 10 , and R 11 have the same meanings as R 1 to R 6 ;
“n” is an integer in the range of 0 to 100;
“A” represents a linear or branched alkylene group having 1 to 6 carbon atoms;
R 12 represents a hydrogen atom or a methyl group; and
“p” and “q” each represent a number of unit in one molecule, and are integers in the range of 1≤p≤100 and 1≤q≤3.

2. A stretchable film comprising the urethane resin according to claim 1 .

3. The stretchable film according to claim 2 , wherein the stretchable film exhibits a stretching property of 40 to 500% in a tensile test regulated by JIS K 6251.

4. The stretchable film according to claim 3 , wherein the stretchable film is used as a film to be in contact with a conductive wiring having stretchability.

5. The stretchable film according to claim 2 , wherein the stretchable film is used as a film to be in contact with a conductive wiring having stretchability.

6. A method for forming a stretchable film, comprising:
mixing a compound shown by the following formula (1) and a compound having an isocyanate group to make a mixture.

forming a film of the mixture; and
curing the film by heating.

7. A method for forming a stretchable film, comprising:
forming a film of a compound having a (meth)acrylate group at a terminal thereof shown by the following formula (4):

wherein R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 each independently represent a linear, branched, or cyclic alkyl group having 1 to 6 carbon atoms, a phenyl group, a 3,3,3-trifluoropropyl group, or a group shown by —(OSiR 7 R 8 ) n —OSiR 9 R 10 R 11 ; R 7 , R 8 , R 9 , R 10 , and R 11 have the same meanings as R 1 to R 6 ; “n” is an integer in the range of 0 to 100; “A” represents a linear or branched alkylene group having 1 to 6 carbon atoms; R 12 represents a hydrogen atom or a methyl group; “p” and “q” each represent a number of unit in one molecule, and are integers in the range of 1≤p≤100 and 1≤q≤3; and
curing the film by heating and/or light irradiation.

Assignees

• Shinetsu Chemical Co

Inventors

• Hatakeyama Jun
• Harada Yuji
• Nonaka Shiori
• Mitsui Ryo
• Watanabe Osamu

Classifications

• C08G18/8175

  with esters of acrylic or alkylacrylic acid having only one group containing active hydrogen · CPC title

• C08G18/3895

  Inorganic compounds, e.g. aqueous alkalimetalsilicate solutions; Organic derivatives thereof containing no direct silicon-carbon bonds · CPC title

• C07F7/089 Primary

  Treatments not covered by a preceding group · CPC title

• C07F7/0834 Primary

  Compounds having one or more O-Si linkage (for compounds with C-O-Si linkages see C07F7/18) · CPC title

• C08G77/458

  containing polyurethane sequences · CPC title