GB1165829A - Process for the preparation of Polyurethanes - Google Patents
Process for the preparation of PolyurethanesInfo
- Publication number
- GB1165829A GB1165829A GB5681967A GB5681967A GB1165829A GB 1165829 A GB1165829 A GB 1165829A GB 5681967 A GB5681967 A GB 5681967A GB 5681967 A GB5681967 A GB 5681967A GB 1165829 A GB1165829 A GB 1165829A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyurethanes
- reaction
- dec
- carried out
- chain extending
- 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
- C08G18/28—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
- C08G18/56—Polyacetals
-
- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
-
- 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
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/675—Low-molecular-weight compounds
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
1,165,829. Polyurethanes. FARBENFABRIKEN BAYER A.G. 14 Dec., 1967 [16 Dec., 1966], No. 56819/67. Heading C3R. Polyurethanes are prepared by reacting a diisocyanate, a compound containing at least two hydrogen atoms reactive with isocyanate groups and having a M.W. of below 500 and a linear polyhydroxyl compound which is the reaction product of hexanediol-( 1,6 (-polycarbonate and a source of formaldehyde and has a M.W. of 1000 to 3000. The reaction may be carried out in one step or by the pre-polymer process. In the prepolymer process, the reaction with the chain extending agent may be carried out in the melt or in the presence of an inert solvent. Conventional diisocyanates may be used and the chain extending agents may be glycols, diamines, hydrazine, hydrazides or water. The high M.W. polyhydroxyl compounds are suitably derived from paraformaldehyde.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF0050973 | 1966-12-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1165829A true GB1165829A (en) | 1969-10-01 |
Family
ID=7104229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5681967A Expired GB1165829A (en) | 1966-12-16 | 1967-12-14 | Process for the preparation of Polyurethanes |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT276765B (en) |
CH (1) | CH484233A (en) |
DE (1) | DE1694100B2 (en) |
GB (1) | GB1165829A (en) |
SE (1) | SE336467B (en) |
-
1966
- 1966-12-16 DE DE19661694100 patent/DE1694100B2/en active Pending
-
1967
- 1967-11-14 CH CH1589867A patent/CH484233A/en not_active IP Right Cessation
- 1967-12-14 GB GB5681967A patent/GB1165829A/en not_active Expired
- 1967-12-15 SE SE1728167A patent/SE336467B/xx unknown
- 1967-12-18 AT AT1139367A patent/AT276765B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AT276765B (en) | 1969-12-10 |
CH484233A (en) | 1970-01-15 |
DE1694100A1 (en) | 1971-08-26 |
DE1694100B2 (en) | 1974-07-11 |
SE336467B (en) | 1971-07-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |