Release control agent, silicone release agent composition containing same, release sheet, and laminated body

Patent metadata

Field	Value
Publication number	US-2017190939-A1
Application number	US-201515325210-A
Country	US
Kind code	A1
Filing date	Jul 9, 2015
Priority date	Jul 10, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

The present invention provides a release control agent for producing a release agent composition that has sufficient releasability from a silicone-based adhesive agent and that exhibits excellent releasability even when pressure is applied to a cured product; a silicone release agent composition containing such a release control agent; a release sheet having a cured layer formed from the cured product of the silicone release agent composition; and a laminated body having the release sheet and an adhesive layer. The present invention includes a release control agent containing from 15 to 29 mol % of a fluorine atom-containing organic group in each molecule, and an organopolysiloxane having no hydrosilylation reactive group; a silicone release agent composition containing such a release control agent; a release sheet; and a laminated body.

First claim

1 . A release control agent comprising an organopolysiloxane having from 15 to 29 mol % of a fluorine atom-containing organic group in each molecule, and having no hydrosilylation reactive group.

2 . The release control agent according to claim 1 , wherein the hydrosilylation reactive group is an alkenyl group.

3 . The release control agent according to claim 1 , wherein at least one molecular terminal group of the organopolysiloxane is a trimethylsilyl group.

4 . The release control agent according to claim 1 , wherein the fluorine atom-containing organic group is a group represented by C n F 2n+1 —R—, C n F2 n+1 —R—O—R—, or F(CF(CF 3 )CF 2 O) n CF(CF 3 )—R—O—R—, wherein R is each independently a divalent hydrocarbon group, and n is an integer of 1 to 20.

5 . The release control agent according to claim 1 , wherein a degree of polymerization of the organopolysiloxane is from 100 to 10,000.

6 . A silicone release agent composition comprising:
(A) an organopolysiloxane having at least one fluorine atom-containing organic group and at least two alkenyl groups in each molecule; (B) an organohydrogenpolysiloxane having at least two silicon atom-bonded hydrogen atoms in each molecule; (C) the release control agent according to claim 1 ; and (D) a hydrosilylation reaction catalyst.

7 . The silicone release agent composition according to claim 6 , wherein a content of the component (B) is from 0.1 to 40 parts by mass per 100 parts by mass of the component (A).

8 . The silicone release agent composition according to claim 6 , wherein a content of the component (C) is from 0.01 to 20 parts by mass per 100 parts by mass of the component (A).

9 . A release sheet comprising:
a cured layer consisting of a cured product formed from the silicone release agent composition according to claim 6 ; and a sheet-like substrate.

10 . The release sheet according to claim 9 , wherein the sheet-like substrate is paper, a plastic film, or fabric.

11 . A laminated body comprising:
the release sheet according to claim 9 ; and an adhesive layer.

Assignees

• Dow Corning Toray Co Ltd

Inventors

• Hori Seiji
• Mizuno Haruna
• Nakamura Akihiro
• Tanaka Hidefumi

Classifications

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• C09D183/08

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

• B32B2305/72

  Cured, e.g. vulcanised, cross-linked · CPC title

• C09K3/00

  Materials not provided for elsewhere · CPC title

• C09J2483/00

  Presence of polysiloxane · CPC title