H can be diluted with water or dispersed in water process for the manufacture of epoxymodified polyurethane resins whic

Abstract

Abstract THE SUBJECT OF THE INVENTION IS A PROCESS FOR THE MANUFACTURE OF OXIDATIVELY DRYING, EPOXY-MODIFIED POLYURETHANES OR POLYURETHANE COPOLYMERS RESINS, WHICH CAN BE DILUTED WITH WATER OR DISPERSED IN WATER, CHARACTERIZED IN THAT: (I) (A) UNSATURATED FATTY ACIDS, OF WHICH 0 TO 25 PERCENT BY WEIGHT CAN BE PRESENT AS DRYING OILS, WITH THE UNSATURATED FATTY ACIDS AND-OR THE DRYING OILS OPTIONALLY CONTAINING UP TO 6 PERCENT BY WEIGHT OF MALEIC ANHYDRIDE AS AN ADDUCT, AND WITH THE MIXTURE POSSESSING IODINE NUMBERS OF ABOUT 130 TO 390, (B) ALIPHATIC, CYCLOALIPHATIC OR AROMATIC CARBOXLIC ACIDS OR HYDROXY-CARBOXYLIC ACIDS, INDIVIDUALLY OR AS A MIXTURE, OR THEIR ANHYDRIDES, WHERE THESE EXIST, (C) MONOHYDRIC AND/OR POLYHYDRIC HYDROXY COMPOUNDS, (D) POLYOXYALKYLENE COMPOUNDS WHICH CONTAIN AT LEAST ONE ATOM OF ACTIVE HYDROGEN AND HAVE AN AVERAGE MOLECULAR WEIGHT OF THE POLYOXYALKYLENE CHAIN OF ABOUT 200 TO 50,000, INDIVIDUALLY OR AS A MIXTURE, (E) EPOXIDE COMPOUNDS WHICH CONTAIN AT LEAST ONE EPOXIDE GROUP, INDIVIDUALLY OR AS A MIXTURE, AND (F) COPOLMERIZABLE MONOMERS, INDIVIDUALLY OR AS A MIXTURE, ARE REACTED CONJOINTLY OR STEPWISE BY HEATING UNTIL THE REACTION PRODUCT HAS AN ACID NUMBER OF ZERO TO 300, (II) THE RESULTING ESTER AND/OR ESTER-ETHER, CARRYING HYDROXYL GROUPS AND IF REQUIRED CARRYING CARBOXYL GROUPS, IS REACTED BY WARMING WITH (G) UNSATURATED MONOALCOHOLS AND/OR POLALCOHOLS OR THEIR MIXTURES, AND (H) ISOCYANATES, INDIVIDUALLY OR AS A MIXTURE, WITH THE REACTION OF THE COMPONENT (I) WITH (G) AND (H) TAKING PLACE CONJOINTLY, OR WITH (G) AND (H) HAVING BEFOREHAND BEEN REACTED TO GIVE AN INTERMEDIATE PRODUCT; IN ALL REACTIONS THE COMPONENTS (I) (OPTIONALLY (G) SHOULD BE EMPLOYED IN SUCH A WAY, THROUGH SELECTION OF THE AMOUNTS, THAT THE TOTAL HYDROXYL GROUPS EQUIVALENT BEARS A RATIO OF 1.01 TO 1.45 TO THE ISOCYANATE EQUIVALENT, (III) (I) AND THAT OPTIONALLY, WHERE THE POLYURETHANE RESIN CONTAINS CARBOXYL GROUPS, THIS RESIN IS CONVERTED, BY THE ADDITION OF ALKALI AND/OR STRONG BASES, INTO THE STATE WHERE IT CAN BE DISPERSED IN WATER OR DILUTED WITH WATER.

Inventors

• 👤 T Katsibas

Bibliographic Details