Process for preparing a mixture of polyesters
Abstract
Abstract A MIXTURE OF POLYESTERS IS OBTAINED BY REACTING TOGETHER, IN ESSENTIALLY A ONE-STEP REACTION, MALEIC ANHYDRIDE, TETRAHALOPHTHALIC ANHYDRIDE, PENTAERYTHRITOL, A MIXTURE CONTAINING DIMETHYL HYDROGEN PHOSPHATE AND METHYL DIHYDROGEN PHOSPHATE, AND PROPYLENE OXIDE. THE MIXTURE OF POLYESTERS IS A MIXTURE OF MONOMERIC POLYESTER POLYOLS HAVING LOW ACID NUMBERS. THE PRODUCT OBTAINED IS USEFUL IN THE PREPARATION OF POLYURETHANES. IN ADDITION, A POLYURETHANE COMPOSITION CONTAINING THEREIN THE PRODUCT MIXTURE IS PROVIDED. THE POLYURETHANE COMPOSITION MAY, AMONG OTHER THINGS, BE USED IN COATINGS, AS PACKAGING, OR AS INSULATION IN BUILDINGS, TRUCK OR RAILROAD CAR BODIES OR IN AIRPLANE FUSELAGES.
Inventors
- 👤 James J Anderson
- 👤 Vasco G Camacho
Bibliographic Details
Claims Analysis
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