GB1179222A - Process for the Production of Polyurethanes. - Google Patents
Process for the Production of Polyurethanes.Info
- Publication number
- GB1179222A GB1179222A GB1420868A GB1420868A GB1179222A GB 1179222 A GB1179222 A GB 1179222A GB 1420868 A GB1420868 A GB 1420868A GB 1420868 A GB1420868 A GB 1420868A GB 1179222 A GB1179222 A GB 1179222A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diisocyanate
- polyurethanes
- adipic acid
- polycarbonate
- hexanediol
- 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
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
-
- 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
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
1,179,222. Polyurethanes. FARBENFABRIKEN BAYER A.G. 25 March, 1968 [25 March, 1967], No. 14208/68. Heading C3R. Polyurethanes are prepared by reacting a diisocyanate, a compound of M.W. below 800 containing at least two reactive hydrogen atoms and a mixture of a hydroxyl-containing dicarboxylic acid based polyester of M.W. 1000 to 3000 and a hydroxyl-containing hexanediol-1,6- polycarbonate, the proportion of hexanediol-1,6- polycarbonate being 10 to 50% by weight based on the total amount of polyester and polycarbonate. Polyesters based on adipic acid, particularly ethylene glycol-adipic acid, ethylene glycol-butane diol- 1,4-adipic acid and neopentyl glycol-hexanediol-1,6-adipic acid polyesters are preferred. The diisocyanate is preferably 1,5-naphthylene diisocyanate, 4,4<SP>1</SP>-diphenylmethane diisocyanate, m- and p-phenylene diisocyanate, 2,4- and 2,6-toluylene diisocyanates. Suitable chain lengthening agents are glycols when the reaction is carried out in the absence of solvents and diamines, hydrazine or dihydrazides when a solvent is used. Water may also be used as a chain lengthening agent. A prepolymer may first be formed from the diisocyanate and mixture of polyhydroxyl compounds which prepolymer may then be chainlengthened or else the three components may be reacted in one step. Suitable solvents are dimethylformamide, dimethylacetamide and dimethylsulphoxide. The resulting polyurethanes may be cross-linked by reaction with sulphur, peroxides, formaldehyde or diisocyanates. Films and filaments may be produced from the polyurethanes when the latter are produced in solution by chain-lengthening with diamines, hydrazine or dihydrazides.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF0051944 | 1967-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1179222A true GB1179222A (en) | 1970-01-28 |
Family
ID=7105043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1420868A Expired GB1179222A (en) | 1967-03-25 | 1968-03-25 | Process for the Production of Polyurethanes. |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1694141B2 (en) |
| FR (1) | FR1559394A (en) |
| GB (1) | GB1179222A (en) |
| SE (1) | SE326038B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114149671A (en) * | 2021-11-19 | 2022-03-08 | 天津金发新材料有限公司 | PC/ABS composition and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2910769A1 (en) * | 1979-03-19 | 1980-10-02 | Basf Ag | METHOD FOR PRODUCING POLYURETHANE ELASTOMERS |
-
1967
- 1967-03-25 DE DE19671694141 patent/DE1694141B2/en active Pending
-
1968
- 1968-03-22 SE SE386068A patent/SE326038B/xx unknown
- 1968-03-25 GB GB1420868A patent/GB1179222A/en not_active Expired
- 1968-03-25 FR FR1559394D patent/FR1559394A/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114149671A (en) * | 2021-11-19 | 2022-03-08 | 天津金发新材料有限公司 | PC/ABS composition and preparation method thereof |
| CN114149671B (en) * | 2021-11-19 | 2023-10-27 | 天津金发新材料有限公司 | PC/ABS composition and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1694141A1 (en) | 1971-08-05 |
| FR1559394A (en) | 1969-03-07 |
| SE326038B (en) | 1970-07-13 |
| DE1694141B2 (en) | 1972-07-20 |
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