Abstract: A process for preparing a hydrosilylation catalyst by dissolving chloroplatinic acid H.sub.2 PtCl.sub.6 in a cyclic ether or cyclic ester containing at least 3 carbon atoms, and maintaining the resulting solution at a temperature of at least 30.degree. C.
Abstract: An improved process for preparing water-soluble copper salts of carboxylic acids is described. More particularly, the improved process comprises the steps of(A) providing a mixture comprising(A-1) as a copper source, copper metal, a copper oxide or mixtures thereof,(A-2) at least one organic monocarboxylic acid containing about 10 to about 30 carbon atoms,(A-3) at least one alkanolamine compound characterized by the formulaR.sub.1 (R.sub.2)NHwherein R.sub.1 is a hydroxyalkyl group and R.sub.2 may be hydrogen or a hydroxyalkyl group, and(A-4) water,(B) treating the mixture with oxygen at a temperature up to about the reflux temperature of the mixture until the desired water-soluble copper salt is obtained, and(C) recovering the copper salt as an aqueous solution.The mixture (A) can be modified to include one or more dyes to produce colored solutions of the water-soluble metal salts.
Type:
Grant
Filed:
August 14, 1987
Date of Patent:
February 28, 1989
Assignee:
Mooney Chemicals, Inc.
Inventors:
Richard W. Hein, Anthony Alkaitis, deceased
Abstract: Phenolic antioxidant hydrazides are provided which are useful to stabilize organic materials (such as synthetic polymers) which are subject to oxidative degradation.
Type:
Grant
Filed:
August 12, 1987
Date of Patent:
January 31, 1989
Assignee:
Pennwalt Corporation
Inventors:
Robert T. Kazmierczak, Ronald E. MacLeay, Jerome Wicher
Abstract: A process for the preparation of 2,6-dialkyl-naphthalenes comprising selectively alkylating naphthalene or 2-alkyl-naphthalene with alkylating agent in the presence of a zeolite catalyst at 250.degree. to 345.degree. C. which dialkyl-naphthalenes are useful for the preparation of naphthalene 2,6-dicarboxylic acid used to produce high-quality polyesters or polyamides.
Type:
Grant
Filed:
February 2, 1988
Date of Patent:
January 3, 1989
Assignee:
Rutgerswerke Aktiengesellschaft
Inventors:
Jens Weitkamp, Marita Neuber, Wilhelm Holtmann, Gerd Collin, Hans Spengler