US4119595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-temperature epoxy baking compositions
Assignee: Shell USA Inc
•
Filing: 1977-03-16
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Granted: 1978-10-10
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Expires: 1997-03-16
Abstract
Abstract Stable, high-solids, low-temperature baking compositions are prepared by first reacting an epoxy resin with a polymeric fatty acid, and then reacting the resulting condensate with more than 2% by weight of a strong acid, and adding a curing amount of an amino-containing resin.
Inventors
- 👤 Ronald S. Bauer
- 👤 John A. Lopez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:52
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4215; C09; C09D; C09D163/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
99 words
A stable, low-temperature baking composition prepared by the process which comprises: 1. reacting about 1.0 chemical equivalents of an epoxy resin possessing more than one 1,2-epoxide group with from about 0.1 to about 1.0 chemical equivalents of a polymeric fatty acid, 2. reacting the resulting condensate with more than 2% by weight based on the condensate of a strong acid selected from the group consisting of para-toluene sulfonic acid, hydrochloric acid, sulfuric acid and phosphoric acid, for a period from about 2 hours to about 5 days at a temperature from about room temperature to about 250° C., and
Claim 2
Dependent Claim
99 words
A stable, low-temperature baking composition prepared by the process which comprises: 1. reacting about 1.0 chemical equivalents of an epoxy resin possessing more than one 1,2-epoxide group with from about 0.1 to about 1.0 chemical equivalents of a polymeric fatty acid, 2. reacting the resulting condensate with more than 2% by weight based on the condensate of a strong acid selected from the group consisting of para-toluene sulfonic acid, hydrochloric acid, sulfuric acid and phosphoric acid, for a period from about 2 hours to about 5 days at a temperature from about room temperature to about 250° C., and
Claim 3
Dependent Claim
8 words
adding a curing amount of an amino-plast resin.
Claim 4
Dependent Claim
8 words
adding a curing amount of an amino-plast resin.
Claim 5
Dependent Claim
15 words
The composition of claim 1 wherein the epoxy resin is a glycidyl polyether of 2,2-bis(4-hydroxyphenyl)propane.
Claim 6
Dependent Claim
16 words
The composition of claim 1 wherein the epoxy resin is a hydrogenated glycidyl polyether of 2,2-bis(4-hydroxphenyl)propane.
Claim 7
Dependent Claim
19 words
The composition of claim 1 wherein the epoxy resin is a glycidyl polyether prepared by condensing 2,2-bix(4-cyclohexanol)propane with epichlorohydrin.
Claim 8
Dependent Claim
22 words
The composition of claim 1 wherein the polymerized fatty acids are derived from fatty acids containing from 12 to 20 carbon atoms.
Claim 9
Dependent Claim
15 words
The composition of claim 1 wherein the chemical equivalent ratio is from 0.3:1.0 to 0.6:1.0.
Claim 10
Dependent Claim
11 words
The composition of claim 1 wherein an esterification catalyst is employed.
Claim 11
Dependent Claim
11 words
The composition of claim 7 wherein the catalyst is triphenyl phosphine.
Claim 12
Dependent Claim
11 words
The composition of claim 1 wherein the acid is phosphoric acid.
Claim 13
Dependent Claim
13 words
The composition of claim 1 wherein at least one pigment is additionally added.
Claim 14
Dependent Claim
17 words
The composition of claim 10 wherein the pigment to binder weight ratio is about 1:1 to 4:1.
Claim 15
Dependent Claim
15 words
The composition of claim 11 containing at least 80% by weight non-volatiles in a solvent.
Claim 16
Dependent Claim
12 words
The composition of claim 12 wherein the solvent is an organic solvent.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |