GB691037A - Production of pale coloured or colourless polyvinyl phenols - Google Patents
Production of pale coloured or colourless polyvinyl phenolsInfo
- Publication number
- GB691037A GB691037A GB3048348A GB3048348A GB691037A GB 691037 A GB691037 A GB 691037A GB 3048348 A GB3048348 A GB 3048348A GB 3048348 A GB3048348 A GB 3048348A GB 691037 A GB691037 A GB 691037A
- Authority
- GB
- United Kingdom
- Prior art keywords
- benzene
- butyl
- aqueous dispersion
- isopropyl
- petrol
- 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
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F16/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F16/02—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an alcohol radical
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerization Catalysts (AREA)
Abstract
Vinyl phenols polymerized in bulk, in solution or in aqueous dispersion yield pale or colourless polymers if access of molecular oxygen is prevented during the reaction, e.g. by maintaining the mixture quiescent, reacting in absence of air or under an inert gas such as nitrogen, or in a completely filled vessel. The aqueous dispersion is at or below a pH of 7. Polymerization of the liquid monomers may be by heat or ultra-violet light in the presence of catalysts, e.g. acetyl, crotonyl, benzoyl, tertiary butyl and isopropyl - benzene peroxides, t.- butyl perbenzoate, and t.-butyl and isopropyl benzene hydroperoxides, hydrogen peroxide, and alkali-metal or ammonium persulphates. Low molecular weight material may be extracted from the polymer during a shredding process by solvents such as benzene, toluene, xylene, petrol ether, petrol, carbon tetrachloride, chloroform, trichlorethylene, di-ethyl ether or mixtures thereof. A small amount of ethanol may be first used to soften or dissolve the polymer. Specifications 409,132, 691,035 and 691,036 are referred to.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE492346D BE492346A (en) | 1948-11-24 | ||
| GB3048348A GB691037A (en) | 1948-11-24 | 1948-11-24 | Production of pale coloured or colourless polyvinyl phenols |
| DEB759A DE807441C (en) | 1948-11-24 | 1949-11-22 | Process for the production of practically colorless polymers from polyvinylphenols |
| FR1000267D FR1000267A (en) | 1948-11-24 | 1949-11-23 | Process for preparing poorly or non-coforinated polyvinyl phenols |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3048348A GB691037A (en) | 1948-11-24 | 1948-11-24 | Production of pale coloured or colourless polyvinyl phenols |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB691037A true GB691037A (en) | 1953-05-06 |
Family
ID=10308375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3048348A Expired GB691037A (en) | 1948-11-24 | 1948-11-24 | Production of pale coloured or colourless polyvinyl phenols |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE492346A (en) |
| DE (1) | DE807441C (en) |
| FR (1) | FR1000267A (en) |
| GB (1) | GB691037A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51105389A (en) * | 1975-03-01 | 1976-09-17 | Kenji Kanezaki | Kojundo pp binirufuenoorujugotaino seizohoho |
| FR2984446B1 (en) | 2011-12-14 | 2014-06-13 | Ksb Sas | BUTTERFLY VALVE |
-
0
- BE BE492346D patent/BE492346A/xx unknown
-
1948
- 1948-11-24 GB GB3048348A patent/GB691037A/en not_active Expired
-
1949
- 1949-11-22 DE DEB759A patent/DE807441C/en not_active Expired
- 1949-11-23 FR FR1000267D patent/FR1000267A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1000267A (en) | 1952-02-11 |
| DE807441C (en) | 1951-06-28 |
| BE492346A (en) |
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