Protective coating for window glass having enhanced adhesion to glass bonding adhesives
View Patent ↗A composition comprising: a)one or more film forming resins having at least one functional group capable of polymerization; b) one or more adhesion promoters comprising compounds containing one or more unsaturated groups capable of free radical polymerization and one or more trialkoxy silane groups; c) one or more fillers capable of imparting abrasion resistance to the composition; d) one or more compounds which is reactive with the film forming resin which also contains an acidic moiety; and e) one or more compounds comprising a siloxane backbone and one or more active hydrogen groups capable of reacting with the functional groups on a glass bonding adhesive: one or more second adhesion promoters comprising one or more silicon, titanium, zirconium, aluminum, or metal containing compounds; organic materials having reactive groups reactive with reactive groups on the surface of substrates or adhesives; or mixtures thereof.
1. A composition comprising:
a) one or more film forming resins having at least one functional group capable of polymerization:
b) one or more adhesion promoters comprising compounds containing one or more unsaturated groups capable of free radical polymerization and one or more trialkoxy silane groups:
c) one or more fillers capable of imparting abrasion resistance to the composition when polymerized:
d) one or more compounds which is reactive with the film forming resin which also contains at least one acidic moiety; and
e) i) one or more compounds comprising a siloxane backbone and one or more active hydrogen groups capable of reacting with a functional group on a glass bonding adhesive; and, ii) A) one or more second adhesion promoters comprising one or more silicon, titanium, zirconium, aluminum, or metal containing compounds: ii) B) organic materials having reactive groups which contain one or more melamine units; or mixtures of ii) A) and ii) B).
2. A composition according to claim 1 wherein the reactive diluent is one or more polyacrylates having a molecular weight of 1,000 or less or polyacrylates containing one or more cycloaliphatic rings.
3. A composition according to claim 1 wherein the first adhesion promoter b) further comprises one or more tertiary amine functional groups.
4. An article comprising glass or plastic having an abrasion resistant coating deposited thereon having a cured coating based on the composition of claim 1 disposed on a portion of one or more surfaces of the glass or coated plastic wherein the coating exhibits a light transmission of about 1 percent or less and an universal hardness of about 100 N/mm 2 or greater.
5. A composition according to claim 1 which further comprises f) one or more reactive diluents capable of reacting with the film forming resin.
6. A composition according to claim 5 which further comprises: g) thermoplastic wax.
7. A composition according to claim 5 wherein the functional groups capable of polymerization of the film-forming resin polymerize when exposed to irradiation and the composition further comprises: i) one or more catalysts or initiators capable of initiating polymerization of the film-forming resin.
8. A composition according to claim 5 which further comprises: h) one or more pigments or dyes.
9. A composition according to claim 8 wherein at least one of the one or more pigments are capable of blocking the transmission of ultraviolet light.
10. A composition according to claim 1 wherein the first adhesion promoter b) comprises one or more Michael Adducts.
11. A composition according to claim 10 wherein Michael Adduct is the reaction product of a polyacrylate and an amino alkoxysilane or siloxane.
12. A window structure comprising a window frame and a window which comprises either glass or abrasion resistant plastic, which has a cured coating according to claim 1 disposed on a surface of the glass or coated plastic.
13. A window structure according to claim 12 wherein the cured coating is bonded to an adhesive and the adhesive is further bonded to a window frame of the structure.
14. A kit comprising a composition according to claim 1 and an adhesive having functional moieties of isocyanate and or siloxanes.
15. A kit according to claim 14 wherein the adhesive further comprises one or more epoxy silanes, one or more melamine resins or a mixture thereof.
16. A composition comprising:
a) one or more film forming resins having at least one functional group capable of polymerization;
b) one or more adhesion promoters comprising compounds containing one or more unsaturated groups capable of free radical polymerization and one or more trialkoxy silane groups;
c) one or more fillers capable of imparting abrasion resistance to the composition when polymerized;
d) one or more compounds which is reactive with the film forming resin which also contains at least one acidic moiety;
e) i) one or more compounds comprising a siloxane backbone and one or more active hydrogen groups capable of reacting with a functional group on a glass bonding adhesive; and, ii) A) one or more second adhesion promoters comprising one or more silicon, titanium, zirconium, aluminum, or metal containing compounds: ii) B) organic materials having reactive groups which contain one or more melamine units and unsaturated groups which polymerize when exposed to free radicals; or mixtures of ii) A) and ii) B);
f) one or more reactive diluents capable of reacting with the film forming resin; and
i) one or more catalysts or initiators capable of initiating polymerization of the film-forming resin;
wherein the functional groups capable of polymerization of the film-forming resin polymerize when exposed to irradiation and the composition further comprises.