US4026941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyoxyalkylated polyol polyesters having improved antistatic properties
Assignee: BASF Corp
•
Filing: 1975-11-28
•
Granted: 1977-05-31
•
Expires: 1995-11-28
Abstract
Abstract Polyesters are prepared by the reaction of an alkyl ester of a dicarboxylic acid and certain polyoxyalkylated polyols having the formula: <IMAGE> <IMAGE> wherein x and y are integers such that the oxyethylene content of the polyol is between 10% and 90% by weight and the oxypropylene content of the polyol is between 90% and 10% by weight. The polyesters are particularly useful in the preparation of antistatic polymer compositions.
Inventors
- 👤 Robert Bernard Login
- 👤 Charles Francis Deck
- 👤 Basil Thir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:18
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G65/00; C08G65/02; C08G65/26; C08G65/2618; C08G65/2621; C08G65/2624
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
141 words
Polyoxyalkylated polyol polyesters prepared by the reaction at a temperature between 60° C. and 160° C. of an alkyl ester of a dicarboxylic acid represented by the formula: R"OOC--R--COOR' wherein R' and R" are individually alkyl having from one to four carbon atoms or hydroxyalkyl having from two to four carbon atoms and R is the organic portion of a dicarboxylic acid selected from the group consisting of oxalic, malonic, succinic, glutaric, adipic, pimelic, suberic, azelaic, sebasic, phthalic, isophthalic, terephthalic and hydrogenated terephthalic with a polyol having the formula: ##STR5## wherein x and y are integers such that the oxyethylene content of the polyol is between 10% and 90% by weight and the oxypropylene content of the polyol is between 90% and 10% by weight, employing an equivalent ratio of ester group to hydroxyl group of from about 0.25:1 to 0.5:1.
Claim 2
Dependent Claim
141 words
Polyoxyalkylated polyol polyesters prepared by the reaction at a temperature between 60° C. and 160° C. of an alkyl ester of a dicarboxylic acid represented by the formula: R"OOC--R--COOR' wherein R' and R" are individually alkyl having from one to four carbon atoms or hydroxyalkyl having from two to four carbon atoms and R is the organic portion of a dicarboxylic acid selected from the group consisting of oxalic, malonic, succinic, glutaric, adipic, pimelic, suberic, azelaic, sebasic, phthalic, isophthalic, terephthalic and hydrogenated terephthalic with a polyol having the formula: ##STR5## wherein x and y are integers such that the oxyethylene content of the polyol is between 10% and 90% by weight and the oxypropylene content of the polyol is between 90% and 10% by weight, employing an equivalent ratio of ester group to hydroxyl group of from about 0.25:1 to 0.5:1.
Claim 3
Dependent Claim
16 words
The polyester of claim 1 wherein the alkyl ester of a dicarboxylic acid is dimethyl terephthalate.
Claim 4
Dependent Claim
16 words
The polyester of claim 1 wherein the alkyl ester of a dicarboxylic acid is dimethyl azelate.
Claim 5
Dependent Claim
18 words
The polyester of claim 1 wherein the polyol has an oxypropylene content between 30% and 70% by weight.
Claim 6
Dependent Claim
33 words
The polyester of claim 1 wherein the alkyl ester is dimethyl terephthalate and the polyol has an oxyethylene content of approximately 40 weight percent and an oxypropylene content of approximately 60 weight percent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |