Surface treatment agent

Patent metadata

Field	Value
Publication number	US-11155672-B2
Application number	US-201615735462-A
Country	US
Kind code	B2
Filing date	Jun 10, 2016
Priority date	Jun 12, 2015
Publication date	Oct 26, 2021
Grant date	Oct 26, 2021

Abstract

The present invention provides a compound represented by general formula (A1) or (A2):R1—(PE1-Y)n—PE2-X—(SiRakRblRcm)α  (A1)(RcmRblRakSi)α—X—(PE1-Y)n—PE2-X—(SiRakRblRcm)α  (A2)wherein each of symbols is as defined in the description.

First claim

The invention claimed is:

1. A surface-treating agent comprising at least one compound of the following formula (A1) or (A2):
R 1 —(PE 1 -Y) n —PE 2 -X—(SiR a k R b l R c m ) α   (A1)

(R c m R b l R a k Si) α —X—(PE 1 -Y) n —PE 2 -X—(SiR a k R b l R c m ) α   (A2)

wherein:
R 1 is OR 4 ;
R 4 is a hydrogen atom or an alkyl group having 1-20 carbon atoms;
PE 1 is each independently at each occurrence a group of the formula:
—(CH 2 CH 2 CH 2 CH 2 O) b —

wherein:
b is each independently at each occurrence an integer of 1-200;
Y is a group of the following formula:
—CONH—R 5 —NHCOO—

wherein R 5 is a group of
—(CH 2 ) x′ —

wherein x′ is an integer of 1-6;

wherein x and y are each independently an integer of 0-6; and
z is an integer of 0-10; or

wherein x and y are each independently an integer of 0-6; and
z is an integer of 0-4;
n is an integer of 1-50;
PE 2 is the above —(CH 2 CH 2 CH 2 CH 2 O) b —group;
X is each independently a single bond or a 2-10 valent organic group;
R a is each independently at each occurrence —Z—SiR 71 p R 72 q R 73 r ;
Z is each independently at each occurrence an oxygen atom or a divalent organic group;
R 71 is each independently at each occurrence R a′ ;
R a′ has the same definition as that of R a ;
in R a , the number of Si atoms which are straightly linked via the Z group is up to five;
R 72 is each independently at each occurrence a hydroxyl group or a hydrolyzable group;
R 73 is each independently at each occurrence a hydrogen atom or a lower alkyl group;
p is each independently at each occurrence an integer of 0-3;
q is each independently at each occurrence an integer of 0-3;
r is each independently at each occurrence an integer of 0-3;
in one R a , the sum of p, q and r is 3;
R b is each independently at each occurrence a hydroxyl group or a hydrolyzable group;
R c is each independently at each occurrence a hydrogen atom or a lower alkyl group;
k is each independently at each occurrence an integer of 0-3;
l is each independently at each occurrence an integer of 0-3;
m is each independently at each occurrence an integer of 0-3;
in a unit in parentheses with the subscript α, the sum of k, l and m is 3;
α is each independently an integer of 1-9;
at least one R 72 or R b is present in the formula;
said surface-treating agent further comprising a polyol of the following formula:
HO—(C a′ H 2a′ O) b′ —H

wherein:
a′ is an integer of 1-6 each independently per a unit in parentheses with the subscript b′; and
b′ is each independently at each occurrence an integer of 1-300; and
a number average molecular weight of the polyol is 1,000-30,000.

2. The surface-treating agent according to claim 1 comprising a compound of the formula (A1):
R 1 —(PE 1 -Y) n —PE 2 -X—(SiR a k R b l R c m ) α   (A1)

wherein R 1 , PE 1 , PE 2 , X, Y, R a , R b , R c , k, l, m, n and α are as defined in claim 1 .

3. The surface treating agent according to claim 1 wherein X is —CONH—C 1-20 alkylene group.

4. The surface-treating agent according to claim 1 wherein a number average molecular weight of PE 1 is 500-10,000.

5. The surface-treating agent according to claim 1 wherein the at least one compound of the formula (A1) or the formula (A2) has a glass transition temperature within the range of −70° C. to 40° C.

6. The surface-treating agent according to claim 1 further comprising a solvent.

7. The surface-treating agent according to claim 1 which forms a surface treating layer having a contact angle to n-hexadecane of 40° or less.

8. The surface-treating agent according to claim 1 which forms a surface treating layer having a coefficient of kinetic friction of 0.30 or less.

9. An article comprising a base material and a layer which is formed on a surface of the base material from the surface-treating agent according to claim 1 .

10. The article according to claim 9 wherein the article is an optical member.

11. The article according to claim 9 wherein the article is a display or a touch panel.

12. The surface-treating agent according to claim 1 , wherein n is an integer of 5-50.

13. The surface-treating agent according to claim 1 , wherein n is an integer of 5-30.

14. The surface-treating agent according to claim 1 wherein Y is a group of the following formula:
—CONH—R 5 —NHCOO—

R 5 is a group of

wherein x and y are each independently an integer of 0-6; and
z is an integer of 0-10.

15. The surface-treating agent according to claim 1 wherein Y is a group of the following formula:
—CONH—R 5 —NHCOO—;

R 5 is a group of

wherein x and y are each independently an integer of 0-6; and
z is an integer of 0- 10.

Assignees

• Daikin Ind Ltd

Inventors

• Honda Yoshiaki
• Moriyasu Reina
• Katsuma Nozomi

Classifications

• G02B1/18

  Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films (G02B1/16 takes precedence) · CPC title

• C08G18/755

  and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate · CPC title

• C09K3/18

  for application to surfaces to minimize adherence of ice, mist or water thereto (rendering particulate materials free flowing, in general, e.g. making them hydrophobic B01J2/30); Thawing or antifreeze materials for application to surfaces (used in liquids for heat-transfer, heat-exchange or heat-storage or for the production of heat or cold other than by combustion, e.g. radiator liquids, C09K5/00) · CPC title

• C03C2217/76

  Hydrophobic and oleophobic coatings · CPC title

• C09D183/12

  containing polyether sequences · CPC title