Title:
【発明の名称】一酸化炭素と不飽和化合物とのポリマーの製造方法
Document Type and Number:
Japanese Patent JP2752151
Kind Code:
B2
Abstract:
Process for the preparation of polymers, characterized in that a mixture of carbon monoxide with one or more olefinically unsaturated compounds is polymerized by contacting the mixture at an elevated temperature and pressure with a solution of a catalyst composition in a diluent in which the polymers are insoluble or virtually insoluble, and which catalyst composition is based upon a) a palladium compound, b) an acid with a pKa of less than 2, and c) a diphosphine of the general formula R<1>R<2>P-R-PR<3>R<4>, wherein R<1>-R<4> represent the same or different optionally polar-substituted hydrocarbyl groups and R is a bivalent organic bridging group containing at least two carbon atoms in the bridge, in which process the catalyst composition that is used at the outset of polymerization comprises a halogen monocarboxylic acid as component b) in a concentration of less than 6 equivalents per mol of palladium and in which process the acid concentration of the catalyst composition is increased after the polymer concentration has reached a value of at least 0.2 g per 100 g of polymer suspension, the latter increase being effected either by adding a halogen monocarboxylic acid in such a quantity that the overall concentration of halogen monocarboxylic acid is at least 7 equivalents per mol of palladium or by adding an acid other than a halogen monocarboxylic acid in a quantity of at least 1 equivalent per mol of palladium.
Inventors:
HETSURITO HERARUDOSU ROOSENBURANTO
JEEMUSU AASAA SORUTAA
JEEMUSU AASAA SORUTAA
Application Number:
JP10899789A
Publication Date:
May 18, 1998
Filing Date:
April 27, 1989
Export Citation:
Assignee:
SHERU INTERN RISAACHI MAACHATSUPII BV
International Classes:
B01J31/04; B01J31/24; C08G67/00; C08G67/02; B01J31/22; (IPC1-7): C08G67/02
Attorney, Agent or Firm:
Yoshio Kawaguchi (2 outside)