Patent US4681815A successfully refreshed from Google Patents.
US4681815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition of polyester oligomer and acrylic binder
Assignee: EIDP Inc
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Filing: 1986-04-16
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Granted: 1987-07-21
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Expires: 2006-04-16
Abstract
Abstract A coating composition based on a binder comprising a major portion of acrylic resin and a minor portion of polyester oligomer, suitable for application to metal and non-metal substrates.
Inventors
- 👤 Andrew F. Rutkiewic
- 👤 Clifford H. Strolle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:49
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D167/00; C08; C08L; C08L2205/00; C08L2205/02; C08L33/00; C08L33/04; C08L33/06; C08L61/00; C08L61/20; C08L67/00; Y; Y10; Y10S; Y10S524/00; Y10S524/901; Y10S524/902; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31688; Y10T428/31692; Y10T428/31699; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
162 words
A coating composition comprising at least about 60% of a film-forming binder consisting essentially of (a) about from 15 to 30% by weight of a polyester oligomer having a weight average molecular weight of about from 3500 to 5000 and prepared from: (1) at least one compound selected from the group consisting of aliphatic triols having from 2 to 6 carbons atoms, (2) at least one compound selected from the group consisting of aliphatic and aromatic diols having from 2 to 14 carbon atoms, and (3) at least one compound selected from the group consisting of aliphatic dibasic acids hiving from 8 to 14 carbon atoms, components (1), (2) and (3) being present in quantities to provide about from 3 to 8 moles of each of components (2) and (3) for each mole of component (1), and (b) about from 85 to 70% of a blend of an acrylic polymer, a self-stabilized, dispersed acrylic polymer and an alkylated melamine formaldehyde crosslinking agent.
Claim 2
Dependent Claim
162 words
A coating composition comprising at least about 60% of a film-forming binder consisting essentially of (a) about from 15 to 30% by weight of a polyester oligomer having a weight average molecular weight of about from 3500 to 5000 and prepared from: (1) at least one compound selected from the group consisting of aliphatic triols having from 2 to 6 carbons atoms, (2) at least one compound selected from the group consisting of aliphatic and aromatic diols having from 2 to 14 carbon atoms, and (3) at least one compound selected from the group consisting of aliphatic dibasic acids hiving from 8 to 14 carbon atoms, components (1), (2) and (3) being present in quantities to provide about from 3 to 8 moles of each of components (2) and (3) for each mole of component (1), and (b) about from 85 to 70% of a blend of an acrylic polymer, a self-stabilized, dispersed acrylic polymer and an alkylated melamine formaldehyde crosslinking agent.
Claim 3
Dependent Claim
16 words
A coating composition of claim 1 wherein component (1) in the polyester oligomer is trimethylol propane.
Claim 4
Dependent Claim
12 words
A coating composition of claim 1 wherein the glycol is neopentyl glycol.
Claim 5
Dependent Claim
17 words
A coating composition of claim 1 wherein the aliphatic acid in the polyester oligomer is dodecanedioic acid.
Claim 6
Dependent Claim
16 words
A coating composition of claim 1 wherein the aliphatic acid in the polyester is azeleic acid.
Claim 7
Dependent Claim
20 words
A coating composition of claim 1 wherein the polyester oligomer has a molecular weight of about from 4000 to 4500.
Claim 8
Dependent Claim
20 words
A coating composition of claim 6 wherein the polyester oligomer has a molecular weight of about from 4200 to 4400.
Claim 9
Dependent Claim
13 words
A coating composition of claim 1 further comprising up to about 50% pigment.
Claim 10
Dependent Claim
15 words
A coating composition of claim 1 further comprising up to about 2% ultraviolet light stabilizer.
Claim 11
Dependent Claim
13 words
A substrate coated with a cured layer of the composition of claim 1.
Claim 12
Dependent Claim
23 words
A substrate coated with a layer of pigmented paint composition and having a layer in adherence thereto of the composition of claim 1.
References Cited (Backward Citations)
US4591533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |