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1. (WO1991009072) PROCESS FOR THE PREPARATION OF COPOLY(ARYLENE SULFIDE) HAVING AN INCREASED AMOUNT OF DISULFIDE RADICALS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/009072 International Application No.: PCT/US1990/007250
Publication Date: 27.06.1991 International Filing Date: 11.12.1990
Chapter 2 Demand Filed: 15.07.1991
IPC:
C08G 75/02 (2006.01) ,C08G 75/14 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
75
Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon
02
Polythioethers
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
75
Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon
14
Polysulfides
Applicants:
EASTMAN KODAK COMPANY [US/US]; 343 State Street Rochester, NY 14650-2201, US
Inventors:
WATKINS, Joseph, John; US
FAGERBURG, David, Richard; US
LAWRENCE, Paul, Blakney; US
RULE, Mark; US
Agent:
MARTIN, Charles, R.; 343 State Street Rochester, NY 14650-2201, US
Priority Data:
452,01118.12.1989US
Title (EN) PROCESS FOR THE PREPARATION OF COPOLY(ARYLENE SULFIDE) HAVING AN INCREASED AMOUNT OF DISULFIDE RADICALS
(FR) PROCEDE DE PREPARATION DE COPOLY(ARYLENE SULFURE) PRESENTANT UNE QUANTITE ACCRUE DE RADICAUX DE BISULFURE
Abstract:
(EN) A process for preparation of a copoly(arylene sulfide) which has an increased amount of disulfide radicals and corresponds to the structure [(-A-S-)1-x(-A-S-S-)x]n, wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.50 to 0.005 and n is at least 50, comprising contacting a disulfide radical increasable copoly(arylene sulfide) corresponding to the structure [(-A-S-)1-x(-A-S-S-)x]n, wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.45 to 0.001 and n is at least 25, in the melt phase with elemental sulfur for a sufficient period of time and at a temperature above 250 degrees C to increase the molecular weight of the copoly(arylene sulfide).
(FR) Procédé de préparation d'un copoly(arylène sulfure) présentant une quantité accrue de radicaux de bisulfure et correspondant à la structure [(-A-S-)1-x(-A-S-S-)x]n, dans laquelle A représente un radical atomique divalent substitué ou non substitué, x se situe dans la plage comprise entre 0,50 et 0,005, et n représente au moins 50, consistant à mettre en contact un copoly(arylène sulfure) dont on peut augmenter les radicaux de bisulfure, correspondant à la structure [(-A-S-)1-x(-A-S-S-)x]n, dans laquelle A représente un radical atomique divalent substitué ou non substitué, x se situe dans la plage comprise entre 0,45 et 0,001, et n représente au moins 25, dans la phase de fusion avec du soufre élémentaire pendant une durée suffisante et à une température supérieure à 250 °C, afin d'augmenter la masse moléculaire du copoly(arylène sulfure).
Designated States: CA, JP, KR
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
CA2071516