Abstract 1. A BLOCK POLYESTER-POLYAMIDE COPOLYMER TERMINATED WITH ESTER OR HYDROXYESTER END GROUPS PREPARED BY CATALYTICALLY REACTING THE TERMINAL GROUPS OF A PREPOLYAMIDE AND A PREPOLYESTER BY MEANS OF AN ESTER INTERCHANGE REACTION: (A) A PREPOLYAMIDE, HAVING AN INHERENT VISCOSITY OF AT LEAST ABOUT 0.1 AND TERMINATED WITH HYDROXTESTER OR ESTER END GROUPS, SAID PREPOLYAMIDE HAVING BEEN PREPARED FROM DAMINE COMPONENT AND A SECOND COMPONENT SELECTED FROM THE GROUP CONSISTING OF: (1) A MOLAR EXCESS OF A DIESTER OF A DIFUNCTIONAL DICARBOXYLIC ACID, AND (2) A DICARBOXYLIC ACID AND A TERMINATING AGENT SELECTED FROM THE GROUP CONSISTING OF MONOHYDRIC AND DIHYDRIC ALCOHOLS, WHEREIN SAID ACID IS USED IN A MOLAR AMOUNT GREATER THAN THAT FOR SAID DIAMINE AND WHEREIN SAID TERMINATING AGENT IS ADDED AFTER THE REACTION BETWEEN SAID DIAMINE AND SAID ACID IN AN AMOUNT OF ONE MOLE PER EQUIVALENT OF EXCESS ACID PRESENT, AND (B) A PREPOLYESTER, HAVING AN INHERENT VISCOSITY OF AT LEAST ABOUT 0.1 AND TERMINATED WITH HYDROXY END GROUPS, SAID PREPOLYESTER HAVING BEEN PREPARED FROM A DIFUNCTIONAL DIOL, OF A DIFUNCTIONAL DIOL, (C) SAID BLOCK COPOLYMER HAVING BEING STABILIZED AGAINST RANDOMINATION IN THE MOLTEN STATE AND HAVING A POLYAMMIDE CONTENT OF FROM ABOUT 10-60% BY WEIGHT OF THE BLOCK COPOLYMER, AND AN INHERENT VISCOSITY OF AT LEAST 0.5.
Inventors
👤 T Gray
👤 K Barton
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-27 14:21
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
A BLOCK POLYESTER-POLYAMIDE COPOLYMER TERMINATED WITH ESTER OR HYDROXYESTER END GROUPS PREPARED BY CATALYTICALLY REACTING THE TERMINAL GROUPS OF A PREPOLYAMIDE AND A PREPOLYESTER BY MEANS OF AN ESTER INTERCHANGE REACTION: (A) A PREPOLYAMIDE, HAVING AN INHERENT VISCOSITY OF AT LEAST ABOUT 0.1 AND TERMINATED WITH HYDROXTESTER OR ESTER END GROUPS, SAID PREPOLYAMIDE HAVING BEEN PREPARED FROM DAMINE COMPONENT AND A SECOND COMPONENT SELECTED FROM THE GROUP CONSISTING OF: (1) A MOLAR EXCESS OF A DIESTER OF A DIFUNCTIONAL DICARBOXYLIC ACID, AND (2) A DICARBOXYLIC ACID AND A TERMINATING AGENT SELECTED FROM THE GROUP CONSISTING OF MONOHYDRIC AND DIHYDRIC ALCOHOLS, WHEREIN SAID ACID IS USED IN A MOLAR AMOUNT GREATER THAN THAT FOR SAID DIAMINE AND WHEREIN SAID TERMINATING AGENT IS ADDED AFTER THE REACTION BETWEEN SAID DIAMINE AND SAID ACID IN AN AMOUNT OF ONE MOLE PER EQUIVALENT OF EXCESS ACID PRESENT, AND (B) A PREPOLYESTER, HAVING AN INHERENT VISCOSITY OF AT LEAST ABOUT 0.1 AND TERMINATED WITH HYDROXY END GROUPS, SAID PREPOLYESTER HAVING BEEN PREPARED FROM A DIFUNCTIONAL DIOL, OF A DIFUNCTIONAL DIOL, (C) SAID BLOCK COPOLYMER HAVING BEING STABILIZED AGAINST RANDOMINATION IN THE MOLTEN STATE AND HAVING A POLYAMMIDE CONTENT OF FROM ABOUT 10-60% BY WEIGHT OF THE BLOCK COPOLYMER, AND AN INHERENT VISCOSITY OF AT LEAST 0.5.
Claim 2
Dependent Claim
211 words
A BLOCK POLYESTER-POLYAMIDE COPOLYMER TERMINATED WITH ESTER OR HYDROXYESTER END GROUPS PREPARED BY CATALYTICALLY REACTING THE TERMINAL GROUPS OF A PREPOLYAMIDE AND A PREPOLYESTER BY MEANS OF AN ESTER INTERCHANGE REACTION: (A) A PREPOLYAMIDE, HAVING AN INHERENT VISCOSITY OF AT LEAST ABOUT 0.1 AND TERMINATED WITH HYDROXTESTER OR ESTER END GROUPS, SAID PREPOLYAMIDE HAVING BEEN PREPARED FROM DAMINE COMPONENT AND A SECOND COMPONENT SELECTED FROM THE GROUP CONSISTING OF: (1) A MOLAR EXCESS OF A DIESTER OF A DIFUNCTIONAL DICARBOXYLIC ACID, AND (2) A DICARBOXYLIC ACID AND A TERMINATING AGENT SELECTED FROM THE GROUP CONSISTING OF MONOHYDRIC AND DIHYDRIC ALCOHOLS, WHEREIN SAID ACID IS USED IN A MOLAR AMOUNT GREATER THAN THAT FOR SAID DIAMINE AND WHEREIN SAID TERMINATING AGENT IS ADDED AFTER THE REACTION BETWEEN SAID DIAMINE AND SAID ACID IN AN AMOUNT OF ONE MOLE PER EQUIVALENT OF EXCESS ACID PRESENT, AND (B) A PREPOLYESTER, HAVING AN INHERENT VISCOSITY OF AT LEAST ABOUT 0.1 AND TERMINATED WITH HYDROXY END GROUPS, SAID PREPOLYESTER HAVING BEEN PREPARED FROM A DIFUNCTIONAL DIOL, OF A DIFUNCTIONAL DIOL, (C) SAID BLOCK COPOLYMER HAVING BEING STABILIZED AGAINST RANDOMINATION IN THE MOLTEN STATE AND HAVING A POLYAMMIDE CONTENT OF FROM ABOUT 10-60% BY WEIGHT OF THE BLOCK COPOLYMER, AND AN INHERENT VISCOSITY OF AT LEAST 0.5.