METHODS FOR APPLYING SOUND DAMPENING AND/OR AESTHETIC COATINGS AND ARTICLES MADE THEREBY

• US 20070048504A1
• Filed: 06/28/2006
• Published: 03/01/2007
• Est. Priority Date: 08/25/2005
• Status: Abandoned Application

• Current Assignee: Pittsburgh Glass Works LLC (LKQ Corporation)
• Original Assignee: Pittsburgh Glass Works LLC (LKQ Corporation)
• Inventors: DiMario, Joseph
• Application Number:
  US11/427,132
• Publication Number:
  US 20070048504A1
• Time in Patent Office: Days
• US Class Current: 428/195.100
• CPC Class Codes: B60R 13/02 Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners B60R13/01 takes precedence ; padded linings for the vehicle interior B60R21/04; arrangements or adaptations of floor mats or carpets in vehicles B60N3/04; internal lining for trains B61D17/18
• CPC Class Codes: B60R 13/08 Insulating elements, e.g. for sound insulation sound insulating linings for trains B61D17/185; drivers' cabs for load-carrying vehicles insulated against vibrations or noise B62D33/0604; thermal or acoustic insulation of engines F02B77/11; damping of sounds using compensation by electro-acoustic methods G10K11/178
• CPC Class Codes: C08G 18/12 using two or more compounds having active hydrogen in the first polymerisation step
• CPC Class Codes: C08G 18/3821 Carboxylic acids; Esters thereof with monohydroxyl compounds
• CPC Class Codes: C08G 18/50 having heteroatoms other than oxygen
• CPC Class Codes: C08G 18/6674 with compounds of group C08G18/3203
• CPC Class Codes: C08G 18/725 Combination of polyisocyanates of C08G18/78 with other polyisocyanates
• CPC Class Codes: C08G 2350/00 Acoustic or vibration damping material
• CPC Class Codes: C09D 175/02 Polyureas
• CPC Class Codes: C09D 5/00 Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced electrically insulating plastics, resins or waxes H01B3/30; Filling pastes
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]

Abstract

A method for providing a coated transparency, includes the steps of: (a) providing a transparency having a vision area and a non-vision area; and (b) applying a sound dampening coating composition to at least a portion of the non-vision area of the transparency. Where the coating composition is a polyurea coating composition, the coating composition can be formed from a reaction mixture including an isocyanate-functional component and an amine-functional component, wherein the ratio of equivalents of isocyanate groups to equivalents of amine groups is greater than 1, while the volume mixing ratio of the isocyanate-functional component to the amine-functional component is capable of being applied to a substrate at 1:1.

Claims

1. A method for providing a coated transparency, comprising the steps of:

a) providing a transparency having a vision area and a non-vision area; and

b) applying a sound dampening coating composition to at least a portion of the non-vision area of the transparency.

2. The method of claim 1, wherein the coating composition is selected from (a) a polyurea coating composition, (b) an aqueous dispersion of polymeric microparticles, and (c) an epoxy-based coating composition.

3. The method of claim 1, wherein the coating composition is a polyurea coating composition, the coating composition being formed from a reaction mixture comprising an isocyanate-functional component and an amine-functional component wherein the ratio of equivalents of isocyanate groups to equivalents of amine groups is greater than 1, while the volume mixing ratio of the isocyanate-functional component to the amine-functional component is capable of being applied to a substrate at 1:

1.

4. The method of claim 3, wherein at least 1 percent by weight of the isocyanate-functional component comprises at least one polyisocyanate monomer.

5. The method of claim 4, wherein the ratio of equivalents of isocyanate groups to equivalents of amine groups is 1.01 to 1.10:

1.0.

6. The method of claim 3, wherein the isocyanate-functional component comprises isophorone diisocyanate.

7. The method of claim 3, wherein the amine-functional component comprises a primary amine and/or a secondary amine.

8. The method of claim 7, wherein the amine-functional component comprises 20-80 weight percent primary amine and the balance secondary amine.

9. The method of claim 1, wherein the transparency is a vehicle transparency.

10. The method of claim 1, wherein applying comprises depositing a multilayer composite coating on at least a portion of the non-vision area, the multilayer composite coating comprising a first polyurea layer deposited from a first composition, and a second polyurea layer deposited from a second composition, applied over at least a portion of the first polyurea layer, at least one of the first composition and the second composition being formed from a reaction mixture comprising:

(1) an isocyanate component; and

(2) an amine component,

wherein the ratio of equivalents of isocyanate groups to equivalents of amine groups in the reaction mixture is greater than 1, while the volume mixing ratio of the isocyanate-functional component to the amine-functional component is capable of being applied to the vehicle transparency at 1;

1.

11. The method of claim 10, wherein at least 1 percent by weight of the isocyanate-functional component comprises at least one polyisocyanate monomer.

12. A method for forming a textured aesthetic pattern on a vehicle substrate, comprising the steps of:

a) providing a vehicle substrate; and

b) applying a coating composition to at least a portion of the substrate to form a textured aesthetic pattern, wherein the coating composition is a polyurea coating composition, the coating composition being formed from a reaction mixture comprising an isocyanate-functional component and an amine-functional component wherein the ratio of equivalents of isocyanate groups to equivalents of amine groups is greater than 1, while the volume mixing ratio of the isocyanate-functional component to the amine-functional component is capable of being applied to a substrate at 1;

1.

13. The method of claim 12, wherein the pattern is selected from vehicle identification indicia, decorative patterns, logos, and names.

14. The method of claim 12, wherein the vehicle substrate is a vehicle transparency.

16. The transparency of claim 14, wherein the coating composition is selected from (a) a polyurea coating composition, (b) an aqueous dispersion of polymeric microparticles, and (c) an epoxy-based coating composition.

15. A coated transparency, comprising:

a) a transparency having a vision area and a non-vision area; and

b) a sound dampening coating composition applied to at least a portion of the non-vision area of the transparency.

17. The transparency of claim 15, wherein the coating composition is a polyurea coating composition, the coating composition being formed from a reaction mixture comprising an isocyanate-functional component and an amine-functional component wherein the ratio of equivalents of isocyanate groups to equivalents of amine groups is greater than 1, while the volume mixing ratio of the isocyanate-functional component to the amine-functional component is capable of being applied to a substrate at 1:

1.

18. The transparency of claim 15, wherein the sound dampening coating composition comprises a multilayer composite coating formed on at least a portion of the non-vision area, the multilayer composite coating comprising a first polyurea layer deposited from a first composition, and a second polyurea layer deposited from a second composition, applied over at least a portion of the first polyurea layer, at least one of the first composition and the second composition being formed from a reaction mixture comprising:

(1) an isocyanate component; and

(2) an amine component,

wherein the ratio of equivalents of isocyanate groups to equivalents of amine groups in the reaction mixture is greater than 1, while the volume mixing ratio of the isocyanate-functional component to the amine-functional component is capable of being applied to the vehicle transparency at 1;

1.

19. A vehicle substrate having a textured aesthetic pattern, comprising:

a) a vehicle substrate; and

b) a coating composition applied to at least a portion of the substrate to form a textured aesthetic pattern, wherein the coating composition is a polyurea coating composition, the coating composition being formed from a reaction mixture comprising an isocyanate-functional component and an amine-functional component wherein the ratio of equivalents of isocyanate groups to equivalents of amine groups is greater than 1, while the volume mixing ratio of the isocyanate-functional component to the amine-functional component is capable of being applied to a substrate at 1;

1.