GB992765A - Process for preventing discolouration of polyurethanes - Google Patents
Process for preventing discolouration of polyurethanesInfo
- Publication number
- GB992765A GB992765A GB1051/63A GB105163A GB992765A GB 992765 A GB992765 A GB 992765A GB 1051/63 A GB1051/63 A GB 1051/63A GB 105163 A GB105163 A GB 105163A GB 992765 A GB992765 A GB 992765A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ch3coo
- salts
- polyurethanes
- solution
- dimethyl
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/014—Stabilisers against oxidation, heat, light or ozone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/10—Metal compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
- C08K5/57—Organo-tin 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)
- Compositions Of Macromolecular Compounds (AREA)
- Hydrogenated Pyridines (AREA)
Abstract
Polyurethanes containing no free NCO groups and prepared from polyhydroxy compounds, polyisocyanates and hydrazine and/or hydrazide compounds are protected against discoloration by adding to a solution of the polyurethane in an organic polar solvent that can form hydrogen bonds, a solution containing from 0.01 to 5%, based on the weight of polyurethane, of a salt or salts of tin and/or antimony and/or beryllium in a polar solvent. The following salts may be used singly or in admixture: stannous chloride, acetate, octoate, stearate, trichloracetate, formate and dibutyltin dilaurate and salts of formula Sn2O(CH3COO)2, SnO(CH3COO)2, SnCl2(CH3COO)2, Na2[Sn(CH3COO)6], SbCl3, SbOCl, SbCl5, Be(NO3)2, BeSO4, BeCl2, (CH3COO)2Be, and antimonyl potassium oxalate. Polar solvents specified are: water, dimethyl formamide, hexamethylene phosphoramide, dimethyl sulphoxide, N-methyl pyrrolidone and dimethyl acetamide. The polyurethanes may be prepared from: polyesters, polyesteramides, polyethers, polythioethers, polycarbonates and polyacetals having a linear structure. Many substituted hydrazines and hydrazides are listed. In examples: (1) a propolymer derived from toluylene diisocyanate and polyethylene adipate in solution in chlorobenzene and dimethyl formamide was reacted with carbodihydrazide and 0.2% of SnCl2.2H2O, SbCl3 or Be(NO3)2.3H2O added in dimethylformamide, (3) sulphur dioxide was added to a polyester derived from adipic acid, ethylene glycol and butylene-1,4-glycol, followed by diisocyanate, hydrazine hydrate and solutions of SnCl2 and Be(NO3)2. Specifications 917,450 and 972,029 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF35757A DE1153892B (en) | 1962-01-12 | 1962-01-12 | Stabilization of polyadducts of polyhydroxyl compounds, polyisocyanates and hydrazine, hydrazine derivatives and / or hydrazine compounds against discoloration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB992765A true GB992765A (en) | 1965-05-19 |
Family
ID=7096142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1051/63A Expired GB992765A (en) | 1962-01-12 | 1963-01-09 | Process for preventing discolouration of polyurethanes |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1153892B (en) |
| GB (1) | GB992765A (en) |
| NL (1) | NL287539A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1105157B (en) * | 1960-02-22 | 1961-04-20 | Bayer Ag | Process for the production of high molecular weight crosslinked plastics from acid hydrazides and isocyanates |
-
1962
- 1962-01-12 DE DEF35757A patent/DE1153892B/en active Pending
-
1963
- 1963-01-08 NL NL287539A patent/NL287539A/xx unknown
- 1963-01-09 GB GB1051/63A patent/GB992765A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL287539A (en) | 1965-02-25 |
| DE1153892B (en) | 1963-09-05 |
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