Photocurable organopolysiloxane composition

• US 8,791,170 B2
• Filed: 10/04/2012
• Issued: 07/29/2014
• Est. Priority Date: 10/11/2011
• Status: Active Grant

• Current Assignee: Shin-Etsu Chemical Company Limited
• Original Assignee: Shin-Etsu Chemical Company Limited
• Inventors: Sakamoto, Takafumi, Araki, Tadashi, Ikeno, Masayuki
• Primary Examiner(s): Choi, Ling
• Assistant Examiner(s): WHITELEY, JESSICA
• Application Number:
  US13/644,774
• Publication Number:
  US 20130090408A1
• Time in Patent Office: 663 Days
• Field of Search: 522/172, 522/1, 520/1
• US Class Current: 522/172
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
• CPC Class Codes: B82Y 40/00 Manufacture or treatment of nanostructures
• CPC Class Codes: C08F 2/46 Polymerisation initiated by wave energy or particle radiation
• CPC Class Codes: C08F 2/50 with sensitising agents
• CPC Class Codes: C08F 30/08 containing silicon
• CPC Class Codes: C08K 5/0091 Complexes with metal-heteroatom-bonds
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: C08L 83/08 containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
• CPC Class Codes: G03F 7/0002 Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping
• CPC Class Codes: G03F 7/0043 Chalcogenides; Silicon, germanium, arsenic or derivatives thereof; Metals, oxides or alloys thereof G03F7/0044 takes precedence
• CPC Class Codes: G03F 7/038 Macromolecular compounds which are rendered insoluble or differentially wettable G03F7/075 takes precedence; macromolecular azides G03F7/012; macromolecular diazonium compounds G03F7/021
• CPC Class Codes: G03F 7/0757 Macromolecular compounds containing Si-O, Si-C or Si-N bonds G03F7/0752 takes precedence

Abstract

Disclosed is a photocurable organopolysiloxane composition including (A) 100 parts by weight of diorganopolysiloxane having at least two silicon atoms having a hydroxyl group and/or hydrolyzable group attached thereto in one molecule; and (B) 0.1 to 30 parts by weight of a complex compound composed of titanium(meth)acrylate-trialkoxide and β-diketone. It will find use as a sealing agent, adhesive, coating material. It is particularly suitable for micro pars and precision molding on account of its good curability and very little cure shrinkage.

Claims

1. A photocurable organopolysiloxane composition comprising:

(A) 100 parts by weight of a diorganopolysiloxane having at least two silicon atoms having a hydroxyl group and/or hydrolyzable group attached thereto in one molecule;

(B) 0.1 to 30 parts by weight of a complex compound, composed of titanium-(meth)acrylate-trialkoxide and b-diketone, represented by formula (3);

3. The photocurable organopolysiloxane composition of claim 1, wherein the complex compound composed of titanium-(meth)acrylate-trialkoxide and b-diketone of component (B) is a complex compound which is composed of titanium-(meth)acrylate-triisopropoxide and benzoylacetone.

4. The photocurable organopolysiloxane composition of claim 1, wherein component (A) is a diorganopolysiloxane having its molecular chain blocked with hydroxyl groups and/or hydrolyzable groups at both ends.

5. The photocurable organopolysiloxane composition of claim 4 wherein component (A) is a diorganopolysiloxane having the following formula (1) or (2):

9. The photocurable organopolysiloxane composition of claim 1 wherein, in component (B), R² is ethyl or isopropyl, R³ is methyl or phenyl, and R⁴ is methyl or ethoxy.

10. The photocurable organopolysiloxane composition of claim 1 wherein, in component (C), Z is an alkoxy group, a ketoxime group, or an alkenyloxy group.

11. The photocurable organopolysiloxane composition of claim 9 wherein, in component (C), Z is an alkoxy group, a ketoxime group, or an alkenyloxy group.

2. A photocurable organopolysiloxane composition comprising:

(A) 100 parts by weight of a diorganopolysiloxane having at least two silicon atoms having a hydroxyl group and/or hydrolyzable group attached thereto in one molecule;

(B) 0.1 to 30 parts by weight of a complex compound, composed of titanium-(meth)acrylate-trialkoxide and b-diketone, represented by formula (3);

6. The photocurable organopolysiloxane composition of claim 2, wherein the complex compound composed of titanium-(meth)acrylate-trialkoxide and b-diketone of component (B) is a complex compound which is composed of titanium-(meth)acrylate-triisopropoxide and benzoylacetone.

7. The photocurable organopolysiloxane composition of claim 2, wherein component (A) is a diorganopolysiloxane having its molecular chain blocked with hydroxyl groups and/or hydrolyzable groups at both ends.

8. The photocurable organopolysiloxane composition of claim 7 wherein component (A) is a diorganopolysiloxane having the following formula (1) or (2):

12. The photocurable organopolysiloxane composition of claim 2 wherein, in component (B), R² is ethyl or isopropyl, R³ is methyl or phenyl, and R⁴ is methyl or ethoxy.