US3819567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealer composition of an acrylic-epoxy ester graft copolymer and an epoxy resin
Assignee: EIDP Inc
•
Filing: 1972-12-01
•
Granted: 1974-06-25
•
Expires: 1992-12-01
Abstract
Abstract The sealer composition contains a polymeric binder dissolved in an organic solvent in which the polymeric binder comprises the following components: A. an acrylic-epoxy ester graft copolymer that has a backbone of methyl methacrylate, styrene, ethyl acrylate, acrylonitrile or mixtures thereof, contains 1-7% of methacrylic acid or acrylic acid which has been reacted with an alkylene imine and the polymeric side-chain segments of the graft copolymer are epoxy esters of an epoxy resin and an aliphatic dicarboxylic acid; and B. an epoxy hydroxy polyether resin; THE NOVEL COMPOSITION FORMS A HIGH QUALITY COATING AND IS PARTICULARLY USEFUL AS A SEALER COMPOSITION FOR AUTOMOBILES AND TRUCKS.
Inventors
- 👤 R Swanson
- 👤 A Walus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:49
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4423; C09D5/4426; C08; C08F; C08F283/00; C08F283/10; C08L; C08L55/00; C08L63/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
40 words
The sealer composition of claim 1 having a polymeric binder content of 5-25% by weight and wherein the polymeric binder components comprise 40-60% by weight of the acrylic-epoxy ester graft copolymer and correspondingly 60-40% by weight of the epoxyhydroxypolyether resin.
Claim 2
Dependent Claim
43 words
The polymeric side chain segments of the graft copolymer comprise correspondingly 80-20% by weight, based on the weight of the graft copolymer, and are grafted into the backbone segment and the backbone segment portion having the side chain attached thereto has the formula
Claim 3
Dependent Claim
45 words
The sealer composition of claim 2 in which the graft copolymer has a number average molecular weight of about 15,000-50,000 and the backbone segment comprises 30-60% by weight of the graft copolymer and the side chain segment comprises 70-40% by weight of the graft copolymer.
Claim 4
Dependent Claim
57 words
The sealer composition of claim 3 in which the acrylic ester graft copolymer contains 0.5-5% by weight of polymerized monomers in the backbone selected from the group consisting of hydroxy amino propyl methacrylate, 3-(2-methacryloxyethyl)-2,2-spirocyclohexyl oxazolidine, diethyl amino ethyl methacrylate, 2-aminopropyl methacrylate, 2-aminoethyl methacrylate, 2-(1-aziridinyl)-ethyl methacrylate, t-butyl aminoethyl methacrylate, dimethyl ethyl methacrylate, hydroxy propyl methacrylamide and hydroxyethyl methacrylamide.
Claim 5
Dependent Claim
31 words
The sealer composition of claim 4 in which the polymer backbone segment consists essentially of methyl methacrylate, tertiary butylamino ethyl methacrylate, and methacrylic acid that has been reacted with propylene imine.
Claim 6
Dependent Claim
27 words
The sealer composition of claim 4 in which the polymeric backbone consists essentially of methyl methacrylate, diethylamino ethyl methacrylate, methacrylic acid has been reacted with propylene imine.
Claim 7
Dependent Claim
21 words
The sealer composition of claim 3 wherein x of the polymeric side chain segment is a polyepoxide resin of the formula
Claim 8
Dependent Claim
28 words
The sealer composition of claim 7 in which R of the side chain segment has been reacted with propylene imine and Y is the residual of adipic acid.
Claim 9
Dependent Claim
22 words
The sealer composition of claim 3 in which R1 of the epoxy hydroxy polyether resin is selected from the group consisting of
Claim 10
Dependent Claim
25 words
The sealer composition of claim 9 containing about 2-20% by weight of pigment which comprises titanium dioxide pigment, carbon black pigment, and aluminum silicate pigment.
References Cited (Backward Citations)
US3272647A
Cited
US3467611A
Cited
US3524902A
Cited
US3505269A
Cited
US3509086A
Cited
US3538185A
Cited
US3657196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |