摘要:
A stable diaryl dianhydride-epoxy resin solution for preparing handleable, formable resin-impregnated reinforcing material and fully cured laminates. A non-viscous solution of 3,4,3'',4''benzophenone tetracarboxylic dianhydride and the reaction product of epichlorohydrin and bisphenol A is obtained in acetone.
摘要:
Flame-retarded polyurethane materials and foams containing a flame-retarding amount of a synergistic combination of a phosphorus-containing polyol having from two to about eight hydroxyl groups and an aromatic carboxylic acid having at least two carboxyl groups attached to one or more benzene nuclei.
摘要:
FLAME-RETARDED POLYURETHANE MATERIALS AND FOAMS CONTAINING A FLAME-RETARDING AMOUNT OF A SYNERGISTIC COMBINATION OF A PHOSPHORUS-CONTAINING POLYOL HAVING FROM TWO TO ABOUT EIGHT HYDROXYL GROUPS AND A CARBOXYLIC ACID ANHYDRIDE HAVING AT LEAST TWO GROUPS INCLUDING THE ANHYDRO GROUP WHICH ARE REACTIVE WITH AN ISOCYANATE GROUP.
摘要:
ISOMERIC MONOAMINE MIXTURES OF THE VARIOUS INDIVIDUAL COMPOUNDS REPRESENTED BY THE FOLLOWING FORMULA:
CH3-(CH2)X-CH(-M)-(CH2)Y-CH3
WHEREIN THE TOTAL NUMBER OF CARBON ATOMS IN THE LINEAR PARAFFIN CHAIN IS FROM ABOUT 8 TO 22; WHEREIN X IS A WHOLE NUMBER FROM ABOUT 0 TO 19 AND Y IS A WHOLENUMBER FROM ABOUT 0 TO 19; AND WHEREIN M IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF NH2; ACETATE AND HYDROCHLORIDE SALTS OF NH2;
-N(-CH3)2; -N(-(C2H4-O)A-H)-(C2H4-O)B-H
WHEREIN A AND B ARE EACH GREATER THAN ZERO;
-N(-A1)-(CH2)3-N(-A2)-A3
WHEREIN A1, A2, AND A3 ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND (C2H4O)XH WHERE X IS ONE OR GREATER; AND
-N(+)(-CH3)2-CH3 CL(-)
ARE USED AS EFFECTIVE ANTISTATIC AGENTS FOR PLASTICS. IN PRACTICE, THESE COMPOUNDS ARE PREFERABLY MIXTURES OF SUBSTANTIALLY EQUAL AMOUNTS OF THE VARIOUS MONOAMINE ISOMERS WHEREIN THE MONOAMINE IS ATTACHED TO A DIFFERENT INTERNAL CARBON ATOM.