JPS5787421A - Preparation of unsaturated polyester resin - Google Patents
Preparation of unsaturated polyester resinInfo
- Publication number
- JPS5787421A JPS5787421A JP16421780A JP16421780A JPS5787421A JP S5787421 A JPS5787421 A JP S5787421A JP 16421780 A JP16421780 A JP 16421780A JP 16421780 A JP16421780 A JP 16421780A JP S5787421 A JPS5787421 A JP S5787421A
- Authority
- JP
- Japan
- Prior art keywords
- isophthalic acid
- oligoester
- propylene oxide
- anhydride
- reacting
- 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.)
- Granted
Links
Landscapes
- Polyesters Or Polycarbonates (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
PURPOSE: To prepare the titled isophthalate-type resin having excellent water resistance, chemical resistance, mechanical properties, etc., economically, in a short time, by reacting an oligoester of isophthalic acid and propylene oxide with an unsaturated dibasic acid (anhydride).
CONSTITUTION: An oligoester of formula (n and m are 0, 1, 2, 3,...) is prepared by reacting 1mol of isophthalic acid with 1.2W3.0mol of propylene oxide in the presence of a tetraalkylammonium salt catalyst[e.g. (C2H5)4NCl; its amount is 0.001W0.5wt% of isophthalic acid]using an oigoester obtained by the reaction of isophthalic acid with propylene oxide or propylene glycol as a reaction medium. The obtained oligoester is heated at 180W280°C to remove the volatile component, condensed with an unsaturated dibasic acid (anhydride) (e.g. maleic anhydride), and compounded with a polymerization inhibitor and a vinyl monomer (e.g. styrene) to obtain the objective resin.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16421780A JPS5787421A (en) | 1980-11-21 | 1980-11-21 | Preparation of unsaturated polyester resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16421780A JPS5787421A (en) | 1980-11-21 | 1980-11-21 | Preparation of unsaturated polyester resin |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5787421A true JPS5787421A (en) | 1982-05-31 |
JPH0150248B2 JPH0150248B2 (en) | 1989-10-27 |
Family
ID=15788887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16421780A Granted JPS5787421A (en) | 1980-11-21 | 1980-11-21 | Preparation of unsaturated polyester resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5787421A (en) |
-
1980
- 1980-11-21 JP JP16421780A patent/JPS5787421A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0150248B2 (en) | 1989-10-27 |
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