Patent US3865869A successfully refreshed from Google Patents.
US3865869A
Expired / Lapsed
US
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Water-soluble dielectric resins
Assignee: Zeneca Inc
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Filing: 1973-05-21
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Granted: 1975-02-11
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Expires: 1993-05-21
Abstract
Abstract WHEREIN R, c, X, R'', and n are as defined above and a and b are integers each of which is equal to at least 1 and the sum of which is equal to from about 9 to about 16. These resins have been found to be particularly useful in the preparation of electrographic and electrophotographic recording elements. C IS 0 OR 1; X IS HALOGEN OR AN ALKYL RADICAL CONTAINING FROM ONE TO THREE CARBON ATOMS; N IS AN INTEGER EQUAL TO FROM 0 TO 4; R'' is an alkylene group containing from two to four carbon atoms or the radical CH2CH0; and A AND B ARE INTEGERS EACH OF WHICH IS EQUAL TO AT LEAST 1 AND THE SUM OF WHICH IS EQUAL TO ABOUT 2 AND A SECOND POLYOL HAVING THE FOLLOWING GENERAL FORMULA: WHEREIN R is an alkylidene group containing from one to four carbon atoms, a cycloalkylidene group containing five or six carbon atoms, oxygen, sulfur, or a radical having one of the following formulas: Dielectric resins which are soluble in water are disclosed. The resins comprise amine salts of polyester resins, which resins are prepared by reacting a dicarboxylic acid with a polyol blend comprising a first polyol having the following general formula:
Inventors
- 👤 Erich Kuehn
- 👤 John R Wyhof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:08
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/0557; G03G5/0582; C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/91; C08G63/914; C08G63/918; F; F03; F03G; F03G5/00; F03G5/02; G03G5/0202; G03G5/0205; G03G5/0211; G03G5/056; G03G5/0567
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
66 words
A DIELECTRIC RESIN COMPRISING AN AMINE SALT OF A POLESTER RESIN, SAID RESIN COMPRISING THE REACTION PRODUCT OF A DICARBOXYLIC ACID OR AN ANHYDRIDE THEREOF PROVIDED THAT AT LEAST 80 MOL PERCENT OF SAID ACID OR ANHYDRIDE IS AN ALPHA UNSATURATED DICARBOXYLIC ACID, AN ANHYDRIDE THEREOF AN AROMATIC DICARBOXYLIC ACID OR AN ANHYDRIDE THEREOF, AND A POLYOL BLEND COMPRISING A FIRST POLYOL HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
66 words
A DIELECTRIC RESIN COMPRISING AN AMINE SALT OF A POLESTER RESIN, SAID RESIN COMPRISING THE REACTION PRODUCT OF A DICARBOXYLIC ACID OR AN ANHYDRIDE THEREOF PROVIDED THAT AT LEAST 80 MOL PERCENT OF SAID ACID OR ANHYDRIDE IS AN ALPHA UNSATURATED DICARBOXYLIC ACID, AN ANHYDRIDE THEREOF AN AROMATIC DICARBOXYLIC ACID OR AN ANHYDRIDE THEREOF, AND A POLYOL BLEND COMPRISING A FIRST POLYOL HAVING THE FOLLOWING FORMULA:
Claim 3
Dependent Claim
24 words
A dielectric resin, as claimed in claim 1, wherein the sum of a and b in said second polyol is equal to about 9.
Claim 4
Dependent Claim
39 words
A dielectric resin, as claimed in claim 2, wherein the amount of said second polyol in said blend is equal to from about 10 mol percent to about 20 percent of the total amount of polyols in said blend.
Claim 5
Dependent Claim
24 words
A dielectric resin, as claimed in claim 1, wherein the sum of a and b in said second polyol is equal to about 16.
Claim 6
Dependent Claim
40 words
A dielectric resin, as claimed in claim 4, wherein the amount of said second polyol in said blend is equal to from about 2 mol percent to about 4 mol percent of the total amount of polyols in said blend.
Claim 7
Dependent Claim
17 words
A dielectric resin, as claimed in claim 1, wherein the dicarboxylic acid is an alpha-unsaturated dicarboxylic acid.
Claim 8
Dependent Claim
17 words
A dielectric resin, as claimed in claim 1, wherein the dicarboxylic acid is an aromatic dicarboxylic acid.
Claim 9
Dependent Claim
17 words
A dielectric resin, as claimed in claim 1, wherein an anhydride of a dicarboxylic acid is employed.
Claim 10
Dependent Claim
33 words
A dielectric resin, as claimed in claim 1, wherein the amount of dicarboxylic acid or anhydride thereof is sufficient to introduce at least one carboxyl group for each hydroxyl group in said blend.
Claim 11
Dependent Claim
25 words
A dielectric resin, as claimed in claim 1, wherein the acid number of the polyester resin is equal to from about 25 to about 55.
Claim 12
Dependent Claim
23 words
A dielectric resin, as claimed in claim 1, wherein the amine employed in the preparation of the polyester resin is a tertiary amine.
Claim 13
Dependent Claim
21 words
A dielectric resin, as claimed in claim 1, wherein the amine employed in the preparation of the polyester resin is triethylamine.
Claim 14
Dependent Claim
49 words
A dielectric resin, as claimed in claim 1, comprising a triethylamine salt of a polyester resin of fumaric acid, a polyoxypropylene bis2,2''(4-hydroxyphenyl)propane containing an average of 2.2 oxypropylene groups per mol Of bis2,2''(4-hydroxyphenyl)propane and a polyoxypropylene bis2,2,''(4-hydroxyphenol)propane containing an average of about 9 oxypropylene groups per mol of bis2,2''(4-hydroxyphenyl)propane.
Claim 15
Dependent Claim
32 words
A dielectric resin, as claimed in claim 1, wherein the amount of amine reacted with the polyester resin is at least sufficient to neutralize all of the acidic functionality of said resin.
Claim 16
Dependent Claim
55 words
A dielectric resin, as claimed in claim 1, wherein the amount of amine employed is determined from the following formula: x AN(MWA)/56 wherein AN is the acid number of the polyester resin, MWA is the molecular weight of the amine, and x is the milligrams of amine reacted with each gram of the polyester resin.
References Cited (Backward Citations)
US3703371A
Cited
US3703372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |