GB761395A - Diisocyanate-modified polyester elastomers - Google Patents
Diisocyanate-modified polyester elastomersInfo
- Publication number
- GB761395A GB761395A GB11497/54A GB1149754A GB761395A GB 761395 A GB761395 A GB 761395A GB 11497/54 A GB11497/54 A GB 11497/54A GB 1149754 A GB1149754 A GB 1149754A GB 761395 A GB761395 A GB 761395A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glycol
- isocyanate
- product
- reaction
- groups
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Polyesters modified with an excess of di-isocynate are reacted with a glycol containing, in addition to hydroxy groups, one or more other groups reactive with isocyanates. When such a group is an urethane group the reaction is accelerated. The glycol may be added to the polyester before or after the isocyanate reaction in a quantity less than or equal to that equivalent to the free isocyanate groups in the modified polyester. When less than the equivalent amount of glycol is used, the product must be shaped during the reaction, but with the larger quantity the product may be stored and 1 to 5 per cent by weight of the product of a di-isocyanate is added prior to moulding. As glycols may be employed, urethane glycols, e.g. reaction products, containing two urethane groups, of diamines and glycol carbonate, and glycols containing esterified carboxyl, carbonamide, sulphonamide, guanidine, hydrazide and cyanamide groups. In examples: (1) an hydroxy terminated glycol adipic acid polyester is dried, reacted with an excess of diphenyl methane diisocyanate and the product mixed with hexamethylene - dibutanol - diurethane, cast into moulds and heated for 24 hours at 100 DEG C. (2) Similar to (1) but using hexamethylene-di(b -hydroxyethyl)-diurethane. (3) Similar to (1) but using glycol-adipic acid polyester, 1.5 naphthalene di-isocyanate and adipic acid diethanolamide. (4) Similar to (1) but adding the glycol to the polyester before reaction with the di-isocyanate. (5) Similar to (4) but using a smaller amount of di-isocyanate and incorporating additional di-isocyanate prior to moulding. The subject matter of Specification 760,140 is disclaimed. Specification0 700,608 and 700,610 also are referred to.ALSO:Urethane glycols are prepared by reacting diamines or hydrazine with glycol carbonate according to the equation <FORM:0761395/IV(b)/1> With hydrazine (x = 0 in the above formula), the product is hydrazo dicarboxylic acid di-b -hydroxyethyl ester of the formula HOCH2CH2.OCONH.NHCOO.CH2CH2OH.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE761395X | 1953-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB761395A true GB761395A (en) | 1956-11-14 |
Family
ID=6664996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11497/54A Expired GB761395A (en) | 1953-04-24 | 1954-04-21 | Diisocyanate-modified polyester elastomers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB761395A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3012987A (en) * | 1957-04-08 | 1961-12-12 | Du Pont | Coating composition comprising a blend of polyurethane reaction products |
| US4288577A (en) | 1979-12-14 | 1981-09-08 | E. I. Du Pont De Nemours And Company | Novel urethanediols and polyurethanes therefrom |
| WO1985001695A1 (en) * | 1983-10-13 | 1985-04-25 | Ford Motor Company | Flexible basecoat/clearcoat coating compositions |
| WO1985001694A1 (en) * | 1983-10-13 | 1985-04-25 | Ford Motor Company | Flexible coating compositions |
-
1954
- 1954-04-21 GB GB11497/54A patent/GB761395A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3012987A (en) * | 1957-04-08 | 1961-12-12 | Du Pont | Coating composition comprising a blend of polyurethane reaction products |
| US4288577A (en) | 1979-12-14 | 1981-09-08 | E. I. Du Pont De Nemours And Company | Novel urethanediols and polyurethanes therefrom |
| WO1985001695A1 (en) * | 1983-10-13 | 1985-04-25 | Ford Motor Company | Flexible basecoat/clearcoat coating compositions |
| WO1985001694A1 (en) * | 1983-10-13 | 1985-04-25 | Ford Motor Company | Flexible coating compositions |
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