Back to results
US 5,626,964 AGranted
Radiation-curable silicone resins formulated from amine alcohols, tetra-alkoxysilanes and multifunctional acrylates
AssigneeDow Corning Corporation
InventorsJohn D. Blizzard, Arne R. Jarnholm, James S. Tonge
Life of this patent
Estimating the term…
Abstract
Radiation-curable silicone resin abrasion-resistant coatings are produced from the hydrolysis/condensation of tetra-alkoxysilanes, the condensation thereof with amine alcohol and combination with multifunctional acrylate monomers and oligomers. The cured compositions of the invention exhibit excellent abrasion resistance and offer low cost manufacture.
Claims22
A radiation-curable silicone resin composition comprising the reaction product of:
- (A) at least one multifunctional acrylate selected from the group consisting of multifunctional acrylate monomers and oligomers;
- said at least one multifunctional acrylate being present in a predetermined quantity that defines a predetermined sum of methacrylate and acrylate groups;
- (B) a predetermined quantity of at least one tetra-alkoxysilane of the general formula Si(OR).sub.4 wherein each OR is an alkoxy group;
- (C) at least one amine alcohol, said amine alcohol including at least one nucleophilic nitrogen-bonded hydrogen atom and at least one hydroxyl group per molecule thereof;
- said hydroxyl group being condensable with an hydrolyzate formed from said tetra-alkoxysilane (B);
- said amine alcohol being present in a predetermined quantity that defines a predetermined number of nucleophilic nitrogen-bonded hydrogen atoms;
- the ratio of said predetermined number sum of acrylate and methacrylate groups to said predetermined number of nucleophilic nitrogen-bonded hydrogen atoms being at least about 1:1;
- (D) a predetermined quantity of water which is sufficient to cause hydrolysis and condensation of said tetra-alkoxysilane (A) without gelling the combination of components (A)-(D) or causing a precipitate to form therefrom;
- and
- said predetermined quantities of each of components (A)-(D) being present in said coating composition such that said composition, when radiation-cured, exhibits a Taber Abrasion T-500 of 15 or less.
7 more elements
An article of manufacture comprising:
- a substrate, said substrate presenting at least one surface;
- said at least one surface being coated with a radiation-cured coating composition;
- said radiation-cured coating composition, prior to being cured, comprising the reaction product of:
- (A) at least one multifunctional acrylate selected from the group consisting of multifunctional acrylate monomers and oligomers;
- said at least one multifunctional acrylate being present in a predetermined quantity that defines a predetermined sum of methacrylate and acrylate groups;
- (B) a predetermined quantity of at least one tetra-alkoxysilane of the general formula Si(OR).sub.4 wherein each OR is an alkoxy group;
- (C) at least one amine alcohol, said amine alcohol including at least one nucleophilic nitrogen-bonded hydrogen atom and at least one hydroxyl group per molecule thereof;
- said hydroxyl group being condensable with an hydrolyzate formed from said tetra-alkoxysilane (B);
- said amine alcohol being present in a predetermined quantity that defines a predetermined number of nucleophilic nitrogen-bonded hydrogen atoms;
- the ratio of said predetermined number sum of acrylate and methacrylate groups to said predetermined number of nucleophilic nitrogen-bonded hydrogen atoms being at least about 1:1;
- (D) a predetermined quantity of water which is sufficient to cause hydrolysis and condensation of said tetra-alkoxysilane (A) without gelling the combination of
- components (A)-(D) or causing a precipitate to form therefrom;
- and
- said predetermined quantities of each of components (A)-(D) being present in said coating composition such that said composition, when radiation-cured, exhibits a Taber Abrasion T-500 of 15 or less.
11 more elements
Dependencies are inferred from the claim text.