Paintable material

• US 20040048078A1
• Filed: 09/11/2003
• Published: 03/11/2004
• Est. Priority Date: 08/24/2001
• Status: Abandoned Application

• Current Assignee: L&L Products Inc.
• Original Assignee: L&L Products Inc.
• Inventors: Bradley, Jeff, Bradley, Renee, Czaplicki, Michael J.
• Application Number:
  US10/659,887
• Publication Number:
  US 20040048078A1
• Time in Patent Office: Days
• US Class Current: 428/457
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 53/02 of vinyl-aromatic monomers and conjugated dienes
• CPC Class Codes: C09J 153/02 Vinyl aromatic monomers and conjugated dienes
• CPC Class Codes: C09J 163/00 Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/287 including epoxy group or epoxy polymer
• CPC Class Codes: Y10T 428/2891 including addition polymer from alpha-beta unsaturated carboxylic acid [e.g., acrylic acid, methacrylic acid, etc.] Or derivative thereof
• CPC Class Codes: Y10T 428/31511 Of epoxy ether
• CPC Class Codes: Y10T 428/31678 Of metal
• CPC Class Codes: Y10T 428/31692 Next to addition polymer from unsaturated monomers

Abstract

A sealant material and articles incorporating the same. The sealant material includes up to about 80% of an epoxy resin; up to about 40% of an epoxy/elastomer hybrid; up to about 40% of a rheology modifier; up to about 5% of a blowing agent; up to about 7% of a curing agent; and about 40 to about 60% of a filler.

Claims

1. An article of manufacture;

comprising;

a) a first panel;

b) a second panel adjoining said first panel;

c) a sealant over said first panel and said second panel;

said sealant material including

i. up to about 80% of an epoxy resin;

ii. up to about 40% of an epoxy/elastomer hybrid;

iii. up to about 40% of a rheology modifier;

iv. up to about 5% of a blowing agent;

v. up to about 7% of a curing agent; and

vi. a filler;

d) a layer of primer over said sealant; and

e) a layer of paint over said primer.

4. The article of claim 1, wherein said sealant is substantially free of a photoinitiator.

5. The article of claim 1, wherein said sealant is substantially free of ethylene vinyl acetate.

6. The article of claim 1, wherein said sealant is substantially free of ethylene vinyl acetate and a photoinitiator.

7. The article of claim 1, wherein said sealant has been partially cured.

2. An article of manufacture, comprising:

a) a first panel;

b) a partially cured sealant over said first panel and said second panel;

said sealant material including

i. up to about 80% of an epoxy resin;

ii. up to about 40% of an epoxy/elastomer hybrid;

iii. up to about 40% of a rheology modifier other than an ethylene vinyl acetate;

iv. up to about 5% of a blowing agent;

v. up to about 7% of a curing agent; and

vi. about 40 to about 60% of a filler, said sealant being substantially free of a photoinitiator.

8. The article claim 2, wherein said epoxy resin is present in an amount of about 10 to about 50% by weight, and said epoxy/elastomer hybrid is present in an amount of about 10 to about 30% by weight and has about 1:

3 to 3;

1 parts of epoxy to elastomer.

9. The article of claim 8, wherein said filler is a mineral filler.

3. An article of manufacture, comprising:

a) a first metal automotive vehicle panel selected from aluminum, steel or reinforced plastic;

b) a second automotive vehicle panel selected from aluminum, steel or reinforced plastic adjoining said first panel;

c) a sealant over said first panel and said second panel;

said sealant material including

1. about 10 to about 50 parts by weight of an epoxy resin;

2. about 10 to about 30 parts by weight of an epoxy/elastomer hybrid having about 1;

3 to 3;

1 parts of epoxy to elastomer;

3. less than about 10 parts by weight of a rheology modifier including an acrylic;

4. up to about 5 parts by weight of an azocarbonamide blowing agent;

5. up to about 7 parts by weight of a curing agent including an amine; and

6. about 40 to about 60 parts by weight of a mineral filler;

d) a layer of primer, applied by electrocoating, over said sealant;

e) a layer of two component polyurethane paint over said primer; and

f) a clear coat layer over said paint.

10. The article of claim 3, wherein said sealant is substantially free of a photoinitiator.

11. The article of claim 3, wherein said sealant is substantially free of ethylene vinyl acetate.

12. The article of claim 3, wherein said sealant is substantially free of ethylene is vinyl acetate and a photoinitiator.

13. The article of claim 3, wherein said sealant has been partially cured.

14. The article of claim 3, wherein said sealant is self leveling at elevated temperatures for providing a smooth paintable surface.