GB924500A - Improvements in or relating to the manufacture of unsaturated polyester resins - Google Patents
Improvements in or relating to the manufacture of unsaturated polyester resinsInfo
- Publication number
- GB924500A GB924500A GB4376359A GB4376359A GB924500A GB 924500 A GB924500 A GB 924500A GB 4376359 A GB4376359 A GB 4376359A GB 4376359 A GB4376359 A GB 4376359A GB 924500 A GB924500 A GB 924500A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glycol
- ester
- acid
- relating
- manufacture
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/52—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
Unsaturated polyesters are made by effecting ester-interchange between the monomethyl ester of itaconic acid and one or more glycols, and then polycondensing the resulting glycol ester. The glycol may be ethylene-, propylene- or diethylene-glycol. The reaction mixture may also include a saturated dicarboxylic acid (e.g. adipic acid, isophthalic acid or phthalic anhydride). Catalysts for the reaction are aromatic sulphonic acids; an oxide or borate of lead, magnesium or zinc; or boric anhydride. The polyesters may be copolymerized with vinyl monomers (e.g. styrene) in the presence of a vinyl polymerization catalyst (e.g. benzoyl peroxide or methyl ethyl ketone peroxide) and an accelerator (e.g. a manganese salt or a cobalt salt such as the naphthenate).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT48559 | 1959-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB924500A true GB924500A (en) | 1963-04-24 |
Family
ID=11098796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4376359A Expired GB924500A (en) | 1959-01-12 | 1959-12-23 | Improvements in or relating to the manufacture of unsaturated polyester resins |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB924500A (en) |
-
1959
- 1959-12-23 GB GB4376359A patent/GB924500A/en not_active Expired
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