Method for preparing essentially haze-free isophthalic acid- and polymethylolalkanoic acid-containing resins
US4978741A · kind A · utility
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30References
23Claims
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Key dates
| Filing date | Dec 15, 1989 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Dec 15, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D167/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of producing essentially haze-free isophthalic acid and polymethylolalkanoic acid-containing resins comprising reacting isophthalic acid, a polymethylolalkanoic acid, and a polyol in the presence of a catalytically effective amount of a catalyst selected from the group consisting of stannous oxalate, dibutyltin oxide, and tetrabutyl titanate at a temperature of between about 150.degree. C. and 230.degree. C. to produce haze-free resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.