Global Patent Index - EP 1036105 A1

EP 1036105 A1 2000-09-20 - PREPARATION OF POLYESTERS AND ESTERS FROM COMPOUNDS CONTAINING SECONDARY HYDROXYL GROUPS

Title (en)

PREPARATION OF POLYESTERS AND ESTERS FROM COMPOUNDS CONTAINING SECONDARY HYDROXYL GROUPS

Title (de)

DARSTELLUNG VON POLYESTERN UND ESTERN AUS VERBINDUNGEN, DIE SEKUNDÄRE HYDROXYLGRUPPEN ENTHALTEN

Title (fr)

PREPARATION DE POLYESTERS ET D'ESTERS A PARTIR DE COMPOSES RENFERMANT DES GROUPES HYDROXYLES SECONDAIRES

Publication

EP 1036105 A1 (EN)

Application

EP 98961869 A

Priority

  • US 9825578 W
  • US 98522197 A

Abstract (en)

[origin: WO9928368A1] A process for preparing a polyester from a polyol containing a secondary hydroxyl group in high yield and with an improved esterification rate is described. The process comprises reacting a polyol compound containing at least one secondary hydroxyl group with a polycarboxyl compound in the presence of at least one C1-C3 alkyltin compound. The C1-C3 alkyltin is selected from a C1-C3 alkyltin salt of a carboxylic acid, a C1-C3 alkyl stannoic acid, a C1-C3 alkyltin oxide, a C1-C3 alkyltin halide and a mixture thereof. The invention also relates to polyesters made by the above process which may be used in molded articles, fibers, coatings and adhesive formulations. The process of the invention can also be used for the preparation of an ester from a secondary alcohol. Thus, in another embodiment, the invention relates to a process for preparing esters which comprises reacting a carboxyl compound and a secondary alcohol in the presence of a catalytically effective amount of at least one C1-C3 alkyltin catalyst as described above.

IPC 1-7 (main, further and additional classification)

C08G 63/85; C07C 67/03; C07C 67/08

IPC 8 full level (invention and additional information)

C07C 67/08 (2006.01); C08G 63/85 (2006.01)

CPC (invention and additional information)

C08G 63/85 (2013.01); C07C 67/08 (2013.01)

Citation (search report)

See references of WO 9928368A1

Designated contracting state (EPC)

BE DE FR GB NL SE

EPO simple patent family

WO 9928368 A1 19990610; BR 9815362 A 20001010; CN 1411480 A 20030416; EP 1036105 A1 20000920; JP 2001525432 A 20011211

INPADOC legal status


2003-01-22 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020618

2002-03-27 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020206

2000-10-11 [RIN1] INVENTOR (CORRECTION)

- Inventor name: TANNER, JAMES, THOMAS, III

2000-10-11 [RIN1] INVENTOR (CORRECTION)

- Inventor name: HONEYCUTT, ANGELA, HARTLEY

2000-09-20 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000614

2000-09-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE FR GB NL SE