摘要:
7 - (PYRAZOLYL - (1))-3-(1,2,4-TRIAZOLYL-(1)-)COUMARINS AND THEIR QUATERNIZATION PRODUCTS, ADAPTED FOR USE AS BRIGHTENING AGENTS, ARE PREPARED BY CONDENSING (-HYDRAZINO-3-(1,2,4-TRIAZOLYL(1))-COUMARINS WITH 1,3 - DICARBONYL COMPOUNDS AND OPTIONALLY QUATERNIZING THAT PRODUCT.
WHICH ARE USEFUL AS OPTICAL BRIGHTENING AGENTS. IN THE FORMULA R IS HYDROGEN, ALKYL, ALKOXY, CARBALKOXY, ACYLAMINO, ALKYL SULPHONYL, CARBOXY, CN, AN AMMONIUM GROUP A HYDRAZINIUM GROUP OR HALO, AND A STANDS FOR THE RESIDUAL MEMBERS OF A MONO- OR POLYNUCLEAR AROMATIC-CARBOCYCLIC RING SYSTEM WHICH IS CONDENSED AS INDICATED WITH THE HETEROCYCLIC RING AND WHICH MAY CONTAIN FURTHER SUBSTITUTENTS, WHEREAS N DENOTES THE NUMBERS 1-3. THE VARIOUS R SUBSTITUENT GROUPS MAY THEMSELVES BE FURTHER SUBSTITUTED, THE PREFERRED SUBSTITUENTS ON THE ALKYL GROUPS BEING OH, CN, HALO, ALKOXY, CARBALKOXYL AND CARBOXYL GROUPS.
摘要:
HYDROXYL POLYESTERS HAVING A MOLECULAR WEIGHT OF FROM ABOUT 300 TO ABOUT 20,000 ARE PREPARED BY POLYMERIZING A LACTONE HAVING FROM 7 TO 9 MEMBERS IN T HE RING IN THE PRESENCE OF A HYDRAZINE. THE POLYESTERS ARE SUITABLE FOR PLASTICIZERS AND STABILIZERS FOR POLYVINYL CHLORIDE OR AS A REACTANT WITH POLYISOCYANATE TO PREPARE POLYURETHANES.
摘要:
Polyesters which contain hydroxyl and carbonamide groups are prepared by copolymerizing a lactone with a lactam in the presence of a low molecular weight initiator which contains at least two active hydrogen atoms at a temperature of from about 50* C. to about 300* C. These polyesters are particularly useful as plasticizers and stabilizers for polyvinyl chloride.