Curable compositions

Patent metadata

Field	Value
Publication number	US-12486349-B2
Application number	US-202017756865-A
Country	US
Kind code	B2
Filing date	Dec 3, 2020
Priority date	Dec 5, 2019
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

Provided is a curable composition including the following components: (i) a first alkoxysilane which is unhydrolyzed; (ii) a second alkoxysilane which is 5 to 45 percent hydrolyzed; and (iii) an ethylenically unsaturated monomer. The invention also provides coatings formed from the curable composition and articles coated with the curable composition.

First claim

The invention claimed is:

1 . A curable composition comprising the following components:
(i) a first alkoxysilane which is unhydrolyzed, present in the curable composition in an amount ranging from 10 to 80 weight percent; (ii) a second alkoxysilane which is 5 to 45 percent hydrolyzed, present in the curable composition in an amount ranging from 5 to 90 weight percent; and an ethylenically unsaturated monomer, present in the curable composition in an amount ranging from 1 to 50 weight percent; wherein weight percentage is based on the total weight of components (i), (ii), and (iii).

2 . The curable composition of claim 1 , wherein component (i) and component (ii) are prepared and added separately.

3 . The curable composition of claim 1 , wherein component (ii) comprises at least 30 percent monomeric alkoxysilane.

4 . The curable composition of claim 1 , wherein the first alkoxysilane and the second alkoxysilane are the same or different.

5 . The curable composition of claim 1 , wherein the first alkoxysilane and the second alkoxysilane each independently has the following structure (I):
R x Si(OR′) 4-x   (I)
wherein:
x is 0, 1, 2, or 3;
each R is an organic radical independently selected from C 1 to C 6 alkyl, vinyl, alkoxyalkyl, aryl, aryloxyalkyl, γ-glycidoxy alkyl, or γ-(meth)acryloxy alkyl; and
each R′ is independently a C 1 to C 4 alkyl group.

6 . The curable composition of claim 1 , further comprising a free-radical initiator selected from the group consisting of thermal initiators, photoinitiators, and mixtures thereof.

7 . The curable composition of claim 6 , wherein the free-radical initiator is a photoinitiator.

8 . The curable composition of claim 1 , wherein each of the first alkoxysilane of component (i) and the second alkoxysilane of component (ii) is independently selected from the group consisting of methyl triethoxysilane, γ-glycidoxypropyl trimethoxysilane, tetramethoxysilane, tetraethoxysilane, acryloxysilane, and mixtures thereof.

9 . The curable composition of claim 5 , wherein R is γ-glycidoxy alkyl and the curable composition further comprises a curing agent comprising a cationic initiator.

10 . The curable composition of claim 9 , wherein the curing agent comprises aryl onium salts of Group VA elements, salts of Group VIA elements, salts of Group VIIA elements, or mixtures thereof.

11 . The curable composition of claim 1 , wherein the ethylenically unsaturated monomer of component (iii) is selected from the group consisting of hexanediol diacrylate, butanediol diacrylate, cycylohexane dimethanol divinylether, and mixtures thereof.

12 . The curable composition of claim 1 , wherein the second alkoxysilane of component (ii) is 10 to 40 percent hydrolyzed.

13 . The curable composition of claim 1 , further comprising a polyglycidyl ether.

Assignees

• Ppg Ind Ohio Inc

Inventors

• Faber Matthew S
• Horner Elizabeth A

Classifications

• C09D183/06 Primary

  containing silicon bound to oxygen-containing groups (C09D183/12 takes precedence) · CPC title

• C09D4/06

  {Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond} in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00 · CPC title

• C08F222/102

  of dialcohols, e.g. ethylene glycol di(meth)acrylate or 1,4-butanediol dimethacrylate · CPC title

• C08F283/122 Primary

  on to saturated polysiloxanes containing hydrolysable groups, e.g. alkoxy-, thio-, hydroxy- · CPC title

• C09J4/06

  {Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond} in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00 · CPC title