Patent AU4786590A successfully refreshed from Google Patents.
US4116941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble polyester-imides
Assignee: BP Corp North America Inc
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Filing: 1976-06-01
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Granted: 1978-09-26
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Expires: 1996-06-01
Abstract
Abstract Water-soluble polyesterimide resin compositions are prepared by in situ reaction of a mixture of glycol and triol with organic diacid and trimellitic anhydride/aromatic primary diamine. The product is reacted with additional trimellitic anhydride for use as wire enamel in water-base solution and chelated ethanolamine titanate is added to the solution as a crosslinking agent.
Inventors
- 👤 Robert B. Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:31
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/16; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
64 words
A water-soluble polyesterimide resin comprising the reaction product of 1. a mixture of glycol and triol, 2. a mixture of organic diacid and trimellitic anhydride, and 3. aromatic primary diamine wherein the ratio of trimellitic anhydride to (3) is about 2:1 and wherein the equivalent ratio of (1) to (3) is about 1.7:1 to about 8:1 which is subsequently reacted with additional trimellitic anhydride.
Claim 2
Dependent Claim
64 words
A water-soluble polyesterimide resin comprising the reaction product of 1. a mixture of glycol and triol, 2. a mixture of organic diacid and trimellitic anhydride, and 3. aromatic primary diamine wherein the ratio of trimellitic anhydride to (3) is about 2:1 and wherein the equivalent ratio of (1) to (3) is about 1.7:1 to about 8:1 which is subsequently reacted with additional trimellitic anhydride.
Claim 3
Dependent Claim
48 words
A water-soluble polyesterimide resin comprising the reaction product of 1. a mixture of glycol and triol and 2. organic diacid, wherein (1) is in equivalent excess of (2) by a ratio of about 1.5:1 to about 3.5:1, which is further reacted in situ with 3. trimellitic anhydride and
Claim 4
Dependent Claim
48 words
A water-soluble polyesterimide resin comprising the reaction product of 1. a mixture of glycol and triol and 2. organic diacid, wherein (1) is in equivalent excess of (2) by a ratio of about 1.5:1 to about 3.5:1, which is further reacted in situ with 3. trimellitic anhydride and
Claim 5
Dependent Claim
35 words
aromatic primary diamine wherein the ratio of (3) to (4) is about 2:1 and the equivalent ratio of (1) to (4) is about 8:1 to about 1.7:1 which is subsequently reacted with additional trimellitic anhydride.
Claim 6
Dependent Claim
35 words
aromatic primary diamine wherein the ratio of (3) to (4) is about 2:1 and the equivalent ratio of (1) to (4) is about 8:1 to about 1.7:1 which is subsequently reacted with additional trimellitic anhydride.
Claim 7
Dependent Claim
13 words
The product of claim 1 wherein the aromatic primary diamine is methylenebis (aniline).
Claim 8
Dependent Claim
13 words
A solution of the polyesterimide resin of claim 1 in a water-based solvent.
Claim 9
Dependent Claim
27 words
The solution of claim 4 wherein the solvent comprises 70 to 90 weight percent water, 5 to 15 percent diethylene glycol and 1 to 10 percent dimethylethanolamine.
Claim 10
Dependent Claim
12 words
The solution of claim 4 containing a minor proportion of a titanate.
Claim 11
Dependent Claim
13 words
The solution of claim 4 wherein the titanate is a chelated ethanolamine titanate.
Claim 12
Dependent Claim
10 words
The heat cured product from the solution of claim 7.
Claim 13
Dependent Claim
12 words
An electrical conductor coated with the heat cured product of claim 8.
Claim 14
Dependent Claim
14 words
The water-soluble polyesterimide resin of claim 1, wherein said organic diacid comprises azelaic acid.
Claim 15
Dependent Claim
14 words
The water-soluble polyesterimide resin of claim 2, wherein said organic diacid comprises azelaic acid.
References Cited (Backward Citations)
US3697471A
Cited
US3426098A
Cited
US3562219A
Cited
GB1184139A
Cited
US3493413A
Cited
US3709846A
Cited
US3922252A
Cited
US4038254A
Cited
US4011185A
Cited
US3931418A
Cited
US4046835A
Cited
DE2528251A1
Cited
US4066622A
Cited
US4066593A
Cited
US4070524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |