Protective coating for window glass having enhanced adhesion to glass bonding adhesives

• US 8,147,974 B2
• Filed: 12/18/2008
• Issued: 04/03/2012
• Est. Priority Date: 12/18/2007
• Status: Active Grant

• Current Assignee: Dow Global Technologies LLC (Dow, Inc.)
• Original Assignee: Dow Global Technologies LLC (Dow, Inc.)
• Inventors: Baikerikar, Kiran, Mahdi, Syed Z., Schaefer, Ben W.
• Primary Examiner(s): Blackwell, Gwendolyn
• Application Number:
  US12/338,752
• Publication Number:
  US 20090162592A1
• Time in Patent Office: 1,202 Days
• Field of Search: 522/91, 525/29, 525/301, 525/925, 428/428, 428/429
• US Class Current: 428/429
• CPC Class Codes: B60J 10/345 with formless adhesives, e.g. hot melt
• CPC Class Codes: C03C 17/30 with silicon-containing compounds
• CPC Class Codes: C09D 201/02 characterised by the presence of specified groups , e.g. terminal or pendant functional groups
• CPC Class Codes: Y10S 525/901 Radial block
• CPC Class Codes: Y10S 525/925 Polymer from at least one nonethylenic monomer having terminal ethylenic unsaturation other than polyurethanes, polyesters, polyepoxides, aminoplasts, and phenoplasts
• CPC Class Codes: Y10T 428/31612 As silicone, silane or siloxane

Abstract

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.

Claims

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/mm² 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.