Polyurethanes based on mixed aromatic aliphatic polyesters
Abstract
Abstract A POLYESTER-URETHANE PRODUCED BY (A) ADMIXING AT LEAST ONE LINEAR COPOYESTER, SUCH COPOLYESTER (1) PRODUCED BY THE REACTION OF ONE OR MORE DIOLS OR POLYETHER GLYCOLS WITH AT LEAST TWO DIFFERENT DICARBOXYLIC ACIDS, ANHYDRIDES OF DICARBO XYLIC ADICS, OR METHYL ESTERS OF DICARBOXYLIC ACIDS, ABOUT 40-80 MOLE PERCENT OF SAID DICARBOXYLIC ACIDS, ANHYDRIDES OF DICARBOXYLIC ACIDS OR METHYL ESTERS OF DICARBOXYLIC ACIDS BEING AROMATIC AND ABOUT 60-20 MOLE PERCENT OF SAID DICARBOXYLIC ACIDS, ANHYDRIDES OF DICARBOXYLIC ACIDS OR METHYL ESTERS OF DICARBOXYLIC ACIDS BEING ALIPHATIC (2) HAVING A HYDROXYL NUMBER OF ABOUT 20-225 (3) HAVING A MOLECULAR WEIGHT OF ABOUT 500 TO ABOUT 10,000 (4) HAVING ABOUT TWO HYDROXYL GROUPS PER MOLECULE WITH (B) AT LEAST ONE ORGANIC DIISOCYANATE, THE MOLAR RATION OF ISOCYANATE CONTAINED ON THE DIISOCYANATE TO HYDROXYL CONTAINED ON THE COPOLYESTER BEING ABOUT 0.7/1.0 TO ABOUT 1/1, AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO FORM A POLYESTER-URETHANE.
Inventors
- 👤 M Fryd
Bibliographic Details
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