Shatter-proof glass coating composition, tempered shatter-proof glass using it and method for manufacturing tempered shatter-proof glass

Patent metadata

Field	Value
Publication number	US-10494543-B2
Application number	US-201615347917-A
Country	US
Kind code	B2
Filing date	Nov 10, 2016
Priority date	Dec 14, 2015
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

Disclosed are a coating composition applied on a tempered glass, the tempered glass preventing shattering when impacts are applied, and a manufacturing method thereof. The coating composition comprises a caprolactone-modified acryl resin, an acryl polyol, a polyurethane resin and the like, such that the tempered glass has improved strength and the ceramic part can be removed from a conventional tempered glass. Further provided is a vehicle product such as a vehicle glass component, such that passengers in the vehicle can be protected from the shattering of the broken tempered glass.

First claim

What is claimed is:

1. A coating composition comprising:
(a) an amount of about 50 to 60% by weight of a caprolactone-modified acryl resin component;
(b) an amount of about 10 to 20% by weight of an acryl polyol component;
(c) an amount of about 10 to 20% by weight of a polyurethane resin component;
(d) an amount of about 0.1 to 1.5% by weight of a reaction catalyst;
(e) an amount of about 0.1 to 1.5% by weight of a wet additive;
(f) an amount of about 1.0 to 1.5% by weight of a pigment; and
(g) an amount of about 5 to 20% by weight of a solvent,
all the % by weights based on the total weights of the components (a)-(g),
wherein the coating composition further comprises a hexamethylenediisocyanate trimer resin as a hardener.

2. The coating composition of claim 1 , wherein (a) the caprolactone-modified acryl acrly resin is present in a solid content of about 70 wt % based on the total weight of the caprolactone-modified acryl resin component, and a weight-average molecular weight of the caprolactone-modified acryl resin is of about 8,000 to 20,000, and a hydroxyl group content is of about 1 to 4%.

3. The coating composition of claim 1 , wherein (b) the acryl polyol is present in a solid content of about 55 wt % based on the total weight of the acryl polyol component, a weight-average molecular weight of the acryl polyol is of about 12,000 to 25,000, a hydroxyl group content is of about 0.2 to 2%, and a glass transition temperature of the acryl polyol is of about 70 to 80° C.

4. The coating composition of claim 1 , wherein (c) the polyurethane resin has a hydroxyl group content of about 0.5 to 1.0 wt % based on the total weight of the polyurethane resin, and a weight-average molecular weight of the polyurethane resin is of about 40,000 to 43,000, and the polyurethane resin is present in a solid content of about 70 to 80% based on the total weight of the polyurethane resin component.

5. The coating composition of claim 1 , wherein (d) the reaction catalyst is dibutyltindilaurate.

6. The coating composition of claim 1 , wherein a mixing weight ratio between the total weights of (a) the caprolactone-modified acryl resin component; (b) the acryl polyol component; (c) the polyurethane resin component; (d) the reaction catalyst; (e) the wet additive; (f) the pigment; and (g) the solvent to the hardener is of about 2 to 4:1.

7. The coating composition of claim 1 , wherein a ford cup (FORD CUP#4, 25° C.) viscosity of the coating composition is of about 18 to 20 seconds.

8. The coating composition of claim 1 , wherein the coating composition is transparent.

9. The coating composition of claim 1 , wherein the coating composition is opaque.

10. The coating composition of claim 1 , consisting essentially of:
(a) an amount of about 50 to 60% by weight of a caprolactone-modified acryl resin component;
(b) an amount of about 10 to 20% by weight of an acryl polyol component;
(c) an amount of about 10 to 20% by weight of a polyurethane resin component;
(d) an amount of about 0.1 to 1.5% by weight of a reaction catalyst;
(e) an amount of about 0.1 to 1.5% by weight of a wet additive;
(f) an amount of about 1.0 to 1.5% by weight of a pigment; and
(g) an amount of about 5 to 20% by weight of a solvent,
all the % by weights based on the total weights of the components (a)-(g) and the hexamethylenediisocyanate trimer resin as a hardener.

11. The coating composition of claim 1 , consisting of:
(a) an amount of about 50 to 60% by weight of a caprolactone-modified acryl resin component;
(b) an amount of about 10 to 20% by weight of an acryl polyol component;
(c) an amount of about 10 to 20% by weight of a polyurethane resin component;
(d) an amount of about 0.1 to 1.5% by weight of a reaction catalyst;
(e) an amount of about 0.1 to 1.5% by weight of a wet additive;
(f) an amount of about 1.0 to 1.5% by weight of a pigment; and
(g) an amount of about 5 to 20% by weight of a solvent,
all the % by weights based on the total weights of the components (a)-(g) and the hexamethylenediisocyanate trimer resin as a hardener.

12. A coated tempered glass comprising:
a tempered glass;
a primer layer formed on a surface of the tempered glass; and
a coating layer formed from the coating composition of claim 1 , wherein the coating layer is on the primer layer.

13. The tempered glass of claim 12 , wherein the primer layer is formed by coating with a silane primer.

14. The tempered glass of claim 12 , wherein a pre-primer layer is formed between the tempered glass and the primer layer, and the pre-primer layer is a transparent layer formed with a silane primer.

15. The tempered glass of claim 12 , wherein the primer layer is formed at a width of about 5 to 15 cm at an outer edge of the tempered glass.

16. The tempered glass of claim 12 , wherein the coating layer has an average thickness of about 50 to 80 μm, and the coating layer is coated on a portion where the primer layer is formed or is coated on a front surface of the tempered glass which includes the primer layer.

17. A method of manufacturing a coated tempered glass, comprising:
coating a primer on a surface of a tempered glass to form a primer layer;
coating a coating composition of claim 1 on the primer layer; and
hardening the coating composition at a temperature of about 70 to 90° C for about 20 to 40 minutes.

18. A vehicle panorama roof comprising a coated tempered glass of claim 12 .

19. A vehicle comprising a coating layer formed from the coating composition of claim 1 .

Assignees

• Hyundai Motor Co Ltd
• Noroo Bee Chemical Co Ltd

Inventors

• Kong Nak Kyoung
• Lee Ki Hong
• Park Jong Min
• Jung Tae Soo
• Lee Bock Ceol
• Jin Keon Soo
• Ahn Jae Beom
• Kim Young Seok
• Lee Yong Chul

Classifications

• C03C2217/78

  Coatings specially designed to be durable, e.g. scratch-resistant · CPC title

• C09D175/04 Primary

  Polyurethanes · CPC title

• C08L2205/03

  containing three or more polymers in a blend · CPC title

• C08L2205/02

  containing two or more polymers of the same C08L -group · CPC title

• C09D133/14 Primary

  of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen · CPC title