Adhesive composition, covering substrate, and cured product

Patent metadata

Field	Value
Publication number	US-11760903-B2
Application number	US-202117225642-A
Country	US
Kind code	B2
Filing date	Apr 8, 2021
Priority date	Apr 22, 2020
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

The adhesive composition includes: a cyclic organosilazane compound of the following general formula (1):

wherein R 1 s each independently represent a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and p represents an integer of 3 to 8; and

a hydrolyzable group-containing organosilicon compound containing an alkoxysilane
compound of the following general formula (2) and/or a partial hydrolytic condensate thereof:

R 2 x —Si(OR 3 ) 4-x   (2)

wherein R 2 represents an unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms and optionally having an oxygen atom, R 3 represents an unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and x represents an integer of 0 to 2.

First claim

The invention claimed is:

1. An adhesive composition comprising:
a cyclic organosilazane compound of the following general formula (1):

wherein R 1 s each independently represent a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and p represents an integer of 3 to 8; and
a hydrolyzable group-containing organosilicon compound containing an alkoxysilane compound of the following general formula (2) and/or a partial hydrolytic condensate thereof:
R 2 x —Si(OR 3 ) 4-x   (2)

wherein R 2 represents an unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms or an alkyloxyalkyl group, R 3 represents an unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and x represents an integer of 0 to 2, and
a solvent, wherein the solvent is an isoparaffin compound or a silicone compound having 2 to 8 silicon atoms.

2. The adhesive composition according to claim 1 , further comprising a bisalkoxysilane compound of the following general formula (3) or a partial hydrolytic condensate thereof:
R 4 n (OR 5 ) 3-n Si—R 6 —SiR 4 m (OR 5 ) 3-m   (3)

wherein R 4 and R 5 each independently represent a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, R 6 represents a substituted or unsubstituted divalent hydrocarbon group having 1 to 50 carbon atoms and optionally containing O, S, N or Si, and n and m each independently represent 0, 1 or 2.

3. The adhesive composition according to claim 1 , further comprising at least one metal compound selected from the group consisting of titanium, aluminum, zinc and tin.

4. A cured product obtained by curing the adhesive composition according to claim 1 .

5. A covering substrate including a substrate, and a film formed on the substrate, the film being formed from the adhesive composition according to claim 1 .

6. The covering substrate according to claim 5 , wherein the substrate is an acrylic resin.

Assignees

• Shinetsu Chemical Co

Inventors

• Kawakami Masato
• Kiyomori Ayumu
• Nakazawa Koichi

Classifications

• C09J183/16 Primary

  in which all the silicon atoms are connected by linkages other than oxygen atoms · CPC title

• C09J4/00 Primary

  Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond {; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16} · CPC title

• C08G77/62

  Nitrogen atoms · CPC title

• C09J11/06

  organic · CPC title

• C09J11/04

  inorganic · CPC title