Abstract: Polyolefin resins are rendered stable against degradation caused by exposure to heat and oxygen in the presence of copper by the incorporation of a novel polymeric stabilizer functioning dually as an antioxidant and a chelating agent.
Type:
Grant
Filed:
March 28, 1979
Date of Patent:
November 3, 1981
Assignee:
El Paso Polyolefins Company
Inventors:
John L. H. Allan, Arnold B. Finestone, John J. Roderick
Abstract: Olefin polymers are described having methylol phenolic groups grafted thereto which modified polymers are useful for preparing improved polymer blends.
Abstract: Hydroxy aromatic compositions containing (a) a hydroxyl group bonded directly to a carbon of an aromatic nucleus, (b) a hydrocarbon-based substituent of at least about 50 aliphatic carbon atoms bonded directly to a carbon atom of an aromatic nucleus, (c) at least one methylol or lower hydrocarbyl substituted methylol substituent bonded directly to a carbon atom of an aromatic nucleus, and not having any alkylene linkages between carbon atoms of two aromatic nuclei are useful as additives for normally liquid fuels and lubricating oils. These hydroxy aromatic compositions are also useful as intermediates for preparing other additives for fuels and lubricants. Typical hydroxy aromatic compositions of the present invention are formed by reaction of formaldehyde with an alkenyl- or alkyl-substituted phenol wherein the alkyl or alkenyl substituent contains an average of about 50 carbon atoms.
Type:
Grant
Filed:
September 6, 1977
Date of Patent:
June 16, 1981
Assignee:
The Lubrizol Corporation
Inventors:
John F. Pindar, Jerome M. Cohen, Charles P. Bryant
Abstract: Composites formed of an organic polymeric matrix and cured thermosetting resinous fibers and/or particles dispersed therein and a method for preparing the same.
Abstract: A rubber composition having improved tackiness and comprising a natural or synthetic rubber and as a tackifier from 0.3 to 15% by weight (referred to the rubber) of a modified alkylphenol novolak prepared from(A) a phenol component selected from the group consisting of(i) a monoalkylphenol having from 3 to 18 carbon atoms in the alkyl group, and(ii) a mixture of (i) with up to 30 mol% of a dialkylphenol having a total of from 6 to 24 carbon atoms in the alkyl groups with(B) a substance which is at least trifunctional with respect to formaldehyde and(C) formaldehydeWherein the molar ratio of one of components (i) and (ii): (B) is from 70:30 to 99:1, a method for its preparation and a molded article prepared therefrom.