(Meth)acryloyl-terminated polyisobutylene polymer, method for producing the same, and active energy ray-curable composition

Patent metadata

Field	Value
Publication number	US-9512247-B2
Application number	US-201214346547-A
Country	US
Kind code	B2
Filing date	Sep 20, 2012
Priority date	Sep 27, 2011
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

The purpose of the present invention is to provide a polymer having a low halogen atom content remaining in the polymer, a simple production method thereof, an active energy ray-curable composition that can be rapidly cured by an irradiation of a small amount of light, and a cured product thereof. These purpose can be achieved by an active energy ray-curable composition, including a polyisobutylene polymer (A) represented by the following general formula (1) (wherein R 1 represents a monovalent or polyvalent aromatic hydrocarbon group, or a monovalent or a polyvalent aliphatic hydrocarbon group; A represents a polyisobutylene polymer; R 2 represents a divalent saturated hydrocarbon group having 2-6 carbon atoms, which contains no hetero atoms; R 3 and R 4 each represent hydrogen, a monovalent hydrocarbon group having 1-20 carbon atoms, or an alkoxy group having 1-20 carbon atoms; R 5 represents hydrogen or a methyl group; and n denotes a natural number), and an active energy ray polymerization initiator (B).

First claim

The invention claimed is:

1. A (meth)acryloyl-terminated polyisobutylene polymer represented by the following general formula (1):

wherein R 1 represents a divalent group that is dicumyl chloride with two chlorine atoms being removed; A represents a polyisobutylene polymer; R 2 represents a divalent saturated hydrocarbon group having 2 to 6 carbon atoms and containing no hetero atoms; R 3 and R 4 each represent hydrogen, a monovalent hydrocarbon group having 1 to 20 carbon atoms, or an alkoxy group having 1 to 20 carbon atoms; R 5 represents hydrogen or a methyl group; and n is 2.

2. The (meth)acryloyl-terminated polyisobutylene polymer according to claim 1 , wherein R 2 represents a divalent hydrocarbon group selected from the group consisting of —CH 2 CH 2 —, —CH 2 CH 2 CH 2 —, —CH 2 CH 2 CH 2 CH 2 —, —CH 2 CH 2 CH 2 CH 2 CH 2 —, and —CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 —.

3. The (meth)acryloyl-terminated polyisobutylene polymer according to claim 1 , wherein R 2 represents —CH 2 CH 2 —.

4. The (meth)acryloyl-terminated polyisobutylene polymer according to claim 1 , wherein R 3 and R 4 represent hydrogen.

5. The (meth)acryloyl-terminated polyisobutylene polymer according to claim 1 , wherein R 5 represents hydrogen.

6. The (meth)acryloyl-terminated polyisobutylene polymer according to claim 1 , wherein the (meth)acryloyl-terminated polyisobutylene polymer (A) has a molecular weight of 200 to 500,000 in terms of number average molecular weight based on polystyrene measured by size exclusion chromatography (SEC), and a molecular weight distribution of 1.8 or less where the molecular weight distribution is represented by Mw/Mn, Mw/Mn is a ratio of the weight average molecular weight Mw to the number average molecular weight Mn.

Assignees

• Kaneka Corp

Inventors

• Ikari Yoshihiro
• Nakabayashi Hironari

Classifications

• C08F299/00 Primary

  Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers · CPC title

• C08F8/00

  Chemical modification by after-treatment (graft polymers, block polymers, crosslinking with unsaturated monomers or with polymers C08F251/00 - C08F299/00; of conjugated diene rubbers C08C) · CPC title

• C08F8/14

  Esterification · CPC title

• C08J2323/22

  Copolymers of isobutene; butyl rubber · CPC title

• C08F297/00

  Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer · CPC title