Antifogging agent composition and antifogging article using same

Patent metadata

Field	Value
Publication number	US-10022945-B2
Application number	US-201515507581-A
Country	US
Kind code	B2
Filing date	Sep 8, 2015
Priority date	Sep 22, 2014
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

To provide an antifogging agent composition having excellent sustainability of antifogging performance.
An anti fogging agent composition includes a copolymer (A), a polyfunctional blocked isocyanate compound (B), and a surfactant (C). The copolymer (A) is formed of 35 to 90 parts by weight of the monomer (A-1), 5 to 60 parts by weight of the monomer (A-2), and 5 to 30 parts by weight of the monomer (A-3) per 100 parts by weight of the copolymer (A). An NCO/OH ratio obtained by dividing an isocyanate group content (NCO) of the polyfunctional blocked isocyanate compound (B) by a hydroxyl group content (OH) of the copolymer (A) is within a range from 0.1 to 1.5. The surfactant (C) includes 1.00 to 10.0 parts by weight of the anionic surfactant (C-1) and 0.01 to 3.00 parts by weight of the cationic surfactant (C-2) per 100 parts by weight of the copolymer (A).

First claim

The invention claimed is:

1. An antifogging agent composition, comprising:
a copolymer (A);
a polyfunctional blocked isocyanate compound (B); and
a surfactant (C), wherein
the copolymer (A) is formed of a monomer (A-1) represented by a following general formula (1) or (2), a monomer (A-2) represented by a following general formula (3), and a monomer (A-3) represented by a following general formula (4) or (5),

(In the general formula (1), R 1 represents a hydrogen atom or a methyl group, R 2 represents a C 1 to C 4 straight chain or branched alkyl group, —C(CH 3 ) 2 CH 2 COCH 3 , —C 2 H 4 N(CH 3 ) 2 , or —C 3 H 6 N(CH 3 ) 2 , and R 3 represents a hydrogen atom or a C 1 to C 4 straight chain or branched alkyl group)

(In the general formula (2), R 4 represents a hydrogen atom or a methyl group)

(In the general formula (3), R 5 represents a hydrogen atom or a methyl group and R 6 represents a C 1 to C 16 straight chain, branched, or cyclic alkyl group)

(In the general formula (4), R 7 represents a hydrogen atom or a methyl group and R 8 represents a C 2 to C 4 straight chain or branched alkylene group or —C 2 H 4 (OCO(CH 2 ) 5 )n−(n═1 to 5))

(In the general formula (5), R 9 represents a hydrogen atom or a methyl group and R 10 represents a C 1 to C 4 straight chain or branched alkylene group),
a content of the monomer (A-1) is 35 to 90 parts by weight, a content of the monomer (A-2) is 5 to 60 parts by weight, and a content of the monomer (A-3) is 5 to 30 parts by weight per a total content of 100 parts by weight of the monomer (A-1), the monomer (A-2), and the monomer (A-3),
an NCO/OH ratio obtained by dividing an isocyanate group content (NCO) of the polyfunctional blocked isocyanate compound (B) by a hydroxyl group content (OH) of the copolymer (A) is within a range from 0.1 to 1.5, and
the surfactant (C) includes an anionic surfactant (C-1) and a cationic surfactant (C-2), a content of the anionic surfactant (C-1) being 1.00 to 10.0 parts by weight per 100 parts by weight of the copolymer (A), a content of the cationic surfactant (C-2) being 0.01 to 3.00 parts by weight per 100 parts by weight of the copolymer (A).

2. The antifogging agent composition according to claim 1 , wherein
the anionic surfactant (C-1) is a fluorochemical surfactant.

3. An antifogging article, comprising:
a substrate; and
an antifogging film formed by heating and curing the antifogging agent composition according to claim 1 applied to the substrate.

4. An antifogging article, comprising:
a substrate; and
an antifogging film formed by heating and curing the antifogging agent composition according to claim 2 applied to the substrate.

Assignees

• Nof Corp

Inventors

• Kano Takamitsu
• Tsuruoka Dai
• Sugihara Yasushi

Classifications

• 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

• C09D175/04

  Polyurethanes · CPC title

• C09D133/26

  Homopolymers or copolymers of acrylamide or methacrylamide · CPC title

• B32B27/40

  comprising polyurethanes · CPC title

• B32B27/30 Primary

  comprising vinyl {(co)polymers; comprising acrylic (co)polymers} · CPC title