US4515835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High solids thermosetting coating compositions, cured coatings, coated articles, and processes
Assignee: Rohm and Haas Co
•
Filing: 1982-12-23
•
Granted: 1985-05-07
•
Expires: 2002-12-23
Abstract
Abstract Disclosed herein are high solids thermosetting compositions comprising a solution of a soft, low molecular weight, hydroxy-functional addition polymer resin and a low molecular weight reactive diluent having two or three aliphatic hydroxyl groups per molecule, the weight ratio of resin to diluent being greater than 1, said coating composition when combined with melamine crosslinking agent being of sprayable, roller coatable, or dip coatable viscosity. Cured coatings, coated articles and processes of coating an article are also disclosed.
Inventors
- 👤 Robert R. Kuhn
- 👤 John D. Whiteman
- 👤 William H. Brendley, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:41
CPC Classifications
C; C09; C09D; C09D201/00; C09D201/02; C09D201/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
116 words
High solids, thermosetting coating composition comprising a soft, low molecular weight, hydroxy-functional addition polymer resin having a GPC M w of less than about 20,000, having a glass transition temperature (Tg) of below about 25° C., a low molecular weight polyether reactive diluent having (a) two or three aliphatic hydroxyl groups per molecule, (b) the property of remaining essentially nonvolatile under curing conditions to minimize emissions, and (c) a molecular weight of about 250 to 1000, the weight ratio of resin to diluent being greater than 1, and an inert organic solvent for said resin and said diluent, said coating composition, when combined with aminoplast crosslinking agent, being of sprayable, roller coatable, or dip coatable viscosity.
Claim 2
Dependent Claim
116 words
High solids, thermosetting coating composition comprising a soft, low molecular weight, hydroxy-functional addition polymer resin having a GPC M w of less than about 20,000, having a glass transition temperature (Tg) of below about 25° C., a low molecular weight polyether reactive diluent having (a) two or three aliphatic hydroxyl groups per molecule, (b) the property of remaining essentially nonvolatile under curing conditions to minimize emissions, and (c) a molecular weight of about 250 to 1000, the weight ratio of resin to diluent being greater than 1, and an inert organic solvent for said resin and said diluent, said coating composition, when combined with aminoplast crosslinking agent, being of sprayable, roller coatable, or dip coatable viscosity.
Claim 3
Dependent Claim
15 words
Composition in accordance with claim 1 wherein the resin has both acid and hydroxyl functionality.
Claim 4
Dependent Claim
18 words
Composition in accordance with claim 1 wherein reactive diluent has a molecular weight of about 300 to 750.
Claim 5
Dependent Claim
18 words
Composition in accordance with claim 1 wherein reactive diluent has a molecular weight of about 400 to 600.
Claim 6
Dependent Claim
34 words
Composition in accordance with claim 1 wherein the resin has a GPC M w less than about 10,000 and a dispersity defined by the formula M w /M n of less than about 8.
Claim 7
Dependent Claim
17 words
Composition in accordance with claim 1 wherein the resin has a T g below about 15° C.
Claim 8
Dependent Claim
19 words
Composition in accordance with claim 1 wherein the resin has a hydroxyl functionality below about 6 per polymer chain.
Claim 9
Dependent Claim
19 words
Composition in accordance with claim 1 wherein the resin has a hydroxyl functionality below about 4 per polymer chain.
Claim 10
Dependent Claim
9 words
Composition in accordance with claim 1 further including pigment.
Claim 11
Dependent Claim
11 words
Composition in accordance with claim 1 wherein said composition is unpigmented.
Claim 12
Dependent Claim
21 words
Composition in accordance with claim 1 wherein the weight ratio of resin to reactive diluent is about 1.1 to about 4.5.
Claim 13
Dependent Claim
21 words
Composition in accordance with claim 1 wherein reactive diluent has a viscosity of less than about 8000 cP at 25° C.
Claim 14
Dependent Claim
21 words
Composition in accordance with claim 1 wherein reactive diluent has a viscosity of less than about 1000 cP at 25° C.
Claim 15
Dependent Claim
15 words
Composition in accordance with claim 1 wherein reactive diluent is a trimethylolpropane polypropylene ether triol.
Claim 16
Dependent Claim
11 words
Composition in accordance with claim 1 further including aminoplast crosslinking agent.
Claim 17
Dependent Claim
22 words
Composition in accordance with claim 15 wherein the ratio of resin to an aminoplast crosslinking agent is about 0.85 to about 3.
Claim 18
Dependent Claim
13 words
Composition in accordance with claim 15 wherein the aminoplast is a monomeric melamine.
Claim 19
Dependent Claim
13 words
Composition in accordance with claim 17 wherein the monomeric melamine is hexamethoxymethyl melamine.
Claim 20
Dependent Claim
13 words
Composition in accordance with claim 15 wherein the aminoplast is a polymeric melamine.
Claim 21
Dependent Claim
10 words
Composition in accordance with claim 15 further including a catalyst.
Claim 22
Dependent Claim
31 words
Composition in accordance with claim 15 wherein the composition has a solids level, including pigment, catalyst, and other additives, of about 65 to 95 weight percent, the balance being inert solvent.
Claim 23
Dependent Claim
17 words
Composition in accordance with claim 21 wherein the solids level is about 68 to 85 weight percent.
Claim 24
Dependent Claim
17 words
Composition in accordance with claim 21 wherein the solids level is about 70 to 80 weight percent.
Claim 25
Dependent Claim
17 words
Process of coating an article comprising applying the composition of claim 15 on said article and curing.
Claim 26
Dependent Claim
9 words
A coating cured from the composition of claim 15.
Claim 27
Dependent Claim
10 words
A coated article coated with the composition of claim 15.
Claim 28
Dependent Claim
25 words
Composition in accordance with claim 15 wherein the #4 Ford cup viscosity at 25° C. is below about 200 seconds and the composition is sprayable.
Claim 29
Dependent Claim
20 words
Composition in accordance with claim 15 wherein the #4 Ford cup viscosity at 25° C. is below about 120 seconds.
Claim 30
Dependent Claim
16 words
Composition in accordance with claim 15 wherein the #4 Ford cup viscosity is about 35-90 seconds.
Claim 31
Dependent Claim
13 words
Composition in accordance with claim 1 wherein said reactive diluent is non-nitrogen containing.
Claim 32
Dependent Claim
12 words
Composition in accordance with claim 1 wherein said resin is non-amide containing.
Claim 33
Dependent Claim
62 words
Composition in accordance with claim 1 wherein said diluent is a polyether selected from the group consisting of trimethylolpropane polypropylene ether triol, trimethylolpropane polyethylene ether triol, trimethylolpropane polyethylene/propylene ether triol, trimethylolpropane polybutylene ether triol; polyethylene ether glycol, polypropylene ether glycol, polyethylene/propylene ether glycol, polytetramethylene ether glycol, bisphenol A polyethylene ether diol, bisphenol A polypropylene ether diol, and bisphenol A polypropylene/ethylene ether diol.
Claim 34
Dependent Claim
15 words
Composition in accordance with claim 1 wherein said diluent is essentially nonvolatile at 300° F.
References Cited (Backward Citations)
US3267174A
Cited
US3352806A
Cited
US4022726A
Cited
US4052480A
Cited
US4144395A
Cited
US4276212A
Cited
US4343925A
Cited
US4314918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |