Abstract: The invention relates to mixtures of polyarylene sulfides (PAS), preferably polyphenylene sulfide (PPS), and pyrenes. The mixtures show reduced radical formation under highly accelerated weathering conditions (UV irradiation).
Type:
Grant
Filed:
August 3, 1989
Date of Patent:
August 28, 1990
Assignee:
Bayer Aktiengesellschaft
Inventors:
Burkhard Kohler, Gerhard Heywang, Eberhard Zirngiebl
Abstract: An ink jet printing substrate particularly useful as a coating for paper for multi-color, water base ink jet printing consisting essentially of a high swelling montmorillonite clay, and optionally including a high surface area pigment, such as a synthetic silica or calcium carbonate and a water-insoluble binder.
Type:
Grant
Filed:
March 12, 1987
Date of Patent:
December 20, 1988
Assignee:
James River Corporation of Virginia
Inventors:
Herbert H. Schubring, Donald R. Spalding, Kenneth A. Pollart
Abstract: Lubricants used in forming halogen-containing thermoplastic resin compositions are addition products of mercaptans and olefins and contain at least one free carboxyl group. Of particular interest are addition products of thio carboxylic acids and long chain alpha-olefins. These lubricants are used in amounts of from about 0.05 to about 5 parts per 100 parts of thermoplastic resin composition.
Type:
Grant
Filed:
July 13, 1987
Date of Patent:
March 15, 1988
Assignee:
Morton Thiokol, Inc.
Inventors:
Karl R. Wursthorn, Jeffrey R. Hyde, Miller H. Goose, Jr.
Abstract: Additives for rubber compositions, giving vulcanizates having improved retention of optimum physical properties, are compounds having the formula R--S--B--S--R where B is an organic bridging group and R is an electron-withdrawing group, for example CN, CCl.sub.3, a radical containing an activated methylene group linked to the sulphur atom or the enolic tautomer of a keto-activated methylene group. Also useful as stabilizing agents are oligomeric analogues of such compounds.
Type:
Grant
Filed:
September 13, 1985
Date of Patent:
April 14, 1987
Assignee:
Monsanto Europe, S. A.
Inventors:
Albert F. L. G. Devaux, Philippe G. Moniotte
Abstract: Organic materials are made flame retardant by addition of a polyhalogenated polyphenylene sulfide such as decabromodiphenyl sulfide or 1,4-thiobis(2,4,6-tribromophenyl)-2,3,5,6-tetrabromobenzene alone or in combination with a Group VA metal oxide, e.g. Sb.sub.2 O.sub.3. A process for making the compounds is also disclosed.
Type:
Grant
Filed:
December 26, 1984
Date of Patent:
October 28, 1986
Assignee:
Ethyl Corporation
Inventors:
Burton J. Sutker, Saadat Hussain, Amgad S. Mossaad
Abstract: Electroviscous (EV) fluids consisting of solid hydrophilic particles dispersed in hydrophobic liquids, where the liquid contains a diaryl derivative component of general formula I ##STR1## in which R is CY.sub.2,O,S,SO,SO.sub.2,SiF.sub.2, or O--SiY.sub.2 --O,X.sup.1 and X.sup.2 are halogens, (m+n) is between 1 and 3 on average, and (p+q) is between 0 and 1 on average. EV fluids containing these novel components possess generally improved properties in terms of lower viscosities, electrical conductivities, toxicities and freezing points. In a preferred embodiment, the component is a mixture of brominated diphenyl methanes in which R is CH.sub.2,n=O,X.sup.1 =Br,(m+n) is approximately one, and (p+q)=0.
Type:
Grant
Filed:
February 3, 1983
Date of Patent:
March 5, 1985
Assignee:
National Research Development Corporation
Abstract: Novel bis-(silylethyl)-oligosulphides are obtained by reacting a vinyl silane of the formula (CH.sub.2 .dbd.CH).sub.m --SiR.sub.n.sup.1 R.sub.4--(m+n) in which R represents chlorine, bromine, iodine, C.sub.1 --C.sub.3 -alkoxy, 2-methoxyethoxy, 2-ethoxyethoxy or hydroxy, R.sup.1 represents C.sub.1 --C.sub.3 -alkyl, phenyl or C.sub.5 --C.sub.7 -cycloalkyl, n is 0, 1 or 2, m is 1 or 2 and m+n is 1, 2 or 3 with sulphur as well as in a given case hydrogen sulphide in molar ratios of vinyl silane to sulphur of from 1:2.5 to 1:10 and vinyl silane to hydrogen sulphide of from 1:0 to 1:5 at temperatures between about 100.degree. and 200.degree. C. under pressure of from 1 to 25 bars (total pressure at the reaction) temperature) and in the presence of sulphidation catalysts known per se, in a given case followed by hydrolysis or partial hydrolysis of the reaction products.
Type:
Grant
Filed:
January 27, 1983
Date of Patent:
April 24, 1984
Assignee:
Degussa Aktiengesellschaft
Inventors:
Rudolf Schwarz, Peter Kleinschmit, Christa Liedtke, Siegfried Wolff