Fluoropolyether-containing polymer-modified silane, surface treating agent, and article

Patent metadata

Field	Value
Publication number	US-10093773-B2
Application number	US-201514661557-A
Country	US
Kind code	B2
Filing date	Mar 18, 2015
Priority date	Mar 31, 2014
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A fluoropolyether-containing polymer-modified silane having (1) is provided wherein Rf is a fluorooxyalkyl or fluorooxyalkylene-containing polymer residue, Y is a divalent to hexavalent hydrocarbon group, R is C 1 -C 4 alkyl or phenyl, X is a hydrolyzable group, n is an integer of 1 to 3, m is an integer of 1 to 5, and α is 1 or 2. A surface treating agent comprising the silane or partial hydrolytic condensate thereof cures under mild conditions into a water/oil repellent layer having abrasion resistance, weatherability and low dynamic friction.

First claim

The invention claimed is:

1. A fluoropolyether-containing polymer-modified silane having the general formula (1):

wherein Rf is a monovalent fluorooxyalkyl or divalent fluorooxyalkylene-containing polymer residue, Y is a divalent to hexavalent hydrocarbon group which may contain a siloxane bond or silylene group, R is independently an alkyl group of 1 to 4 carbon atoms or phenyl group, X is independently a hydrolyzable group, n is an integer of 1 to 3, m is an integer of 1 to 5, and α is 1 or 2.

2. The silane of claim 1 wherein α is 1, and Rf is a group having the general formula (2):
F CF 2 O p C 2 F 4 O q C 3 F 6 O r C 4 F 8 O s   (2)

wherein p, q, r and s are each independently an integer of 0 to 200, the sum p+q+r+s is 3 to 200, each repeating unit may be linear or branched, and individual repeating units may be randomly arranged.

3. The silane of claim 1 wherein α is 2, and Rf is a group having the general formula (3):
—O CF 2 O p C 2 F 4 O q C 3 F 6 O r C 4 F 8 O s   (3)

wherein p, q, r and s are each independently an integer of 0 to 200, the sum p+q+r+s is 3 to 200, each repeating unit may be linear or branched, and individual repeating units may be randomly arranged.

4. The silane of claim 1 wherein Y is selected from the group consisting of an alkylene group of 3 to 10 carbon atoms, a phenylene-containing alkylene group, a divalent group having alkylene groups bonded via a silalkylene or silarylene structure, and a divalent to tetravalent group having alkylene groups bonded to a divalent to tetravalent, linear, branched or cyclic organopolysiloxane residue of 2 to 10 silicon atoms.

5. The silane of claim 1 wherein X is selected from the group consisting of a C 1 -C 10 alkoxy group, C 2 -C 10 alkoxyalkoxy group, C 1 -C 10 acyloxy group, C 2 -C 10 alkenyloxy group, and halogen.

6. A surface treating agent comprising the fluoropolyether-containing polymer-modified silane of claim 1 .

7. The surface treating agent of claim 6 , further comprising a fluoropolyether-containing polymer having the general formula (4):
A-Rf′-A (4)  (4)

wherein A is a monovalent fluorinated group terminated with —CF 3 radical, and Rf′ is a divalent fluorooxyalkylene-containing polymer residue.

8. An article which is surface treated with the surface treating agent of claim 6 .

9. An optical article which is surface treated with the surface treating agent of claim 6 .

10. A touch panel which is surface treated with the surface treating agent of claim 6 .

11. An antireflective film which is surface treated with the surface treating agent of claim 6 .

12. A SiO 2 -deposited glass which is surface treated with the surface treating agent of claim 6 .

13. A strengthened glass which is surface treated with the surface treating agent of claim 6 .

14. A sapphire glass which is surface treated with the surface treating agent of claim 6 .

15. A quartz substrate which is surface treated with the surface treating agent of claim 6 .

Assignees

• Shinetsu Chemical Co

Inventors

• Sakoh Ryusuke
• Matsuda Takashi
• Yamane Yuji

Classifications

• C08L2205/02

  containing two or more polymers of the same C08L -group · CPC title

• Y10T428/31612

  As silicone, silane or siloxane · CPC title

• C08G65/007 Primary

  containing fluorine · CPC title

• C08G65/336

  containing silicon · CPC title

• C03C17/30

  with silicon-containing compounds · CPC title