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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Edwards; Douglas C.
Address:
Sarnia, CA
No. of patents:
12
Patents:












Patent Number Title Of Patent Date Issued
4786690 Process for polymer production November 22, 1988
A process is provided for the production of a polymer of reduced molecular weight by subjecting, in bulk form, a halogenated butyl polymer having at least 75 percent of the unsaturation in the EXO methylene configuration to mastication in an extruder while exposing the masticated polymer
4659754 Dispersions of fibres in rubber April 21, 1987
Polymer-fibre mixtures with improved homogeniety of dispersion of fibres throughout the polymer matrix are prepared from fibres prior mixed or coated with a plasticizer which is compatible with both the fibre and the polymer matrix. Then the plasticizer-fibre combination can be mixed int
4614772 Low molecular weight polymer process September 30, 1986
A process is provided for the production of low molecular weight isobutylene polymer by reacting at a temperature of from about 150.degree. to about 250.degree. C. an isobutylene-conjugated diolefin polymer with an oxygen-containing gas in an extruder.
4588780 Fibre containing polymers and process for production thereof May 13, 1986
A process is provided for the production of mixtures of polymer and fibrous materials by co-coagulation of the polymer and fibrous material. Mixtures of the polymer and fibrous material and vulcanizates of these mixtures are also described.
4486562 Process for making vulcanized carbon black-reinforced bromobutyl rubber films December 4, 1984
A process is provided for preparing a vulcanized carbon black-reinforced chloro- or bromobutyl rubber film comprising admixing a polyfunctional amine vulcanization system with a carbon black-reinforced chloro- or bromobutyl rubber latex containing one or more selected emulsifiers, fo
4482657 Silica-polymer mixtures November 13, 1984
A process is provided for producing a silica-synthetic polymer mixture by mixing silica, water and an alkyl trimethylammonium halide, adding this mixture to a latex of the synthetic polymer, coagulating the mixture and recovering the silica-polymer mixture. Such mixtures may be used for
4357432 Vulcanizates November 2, 1982
A process, and the product of the process, is provided for the production of improved rubbery vulcanizates which contain both of silica or calcium silicate and carbon black as the fillers and two polymers one of which contains hydroxy or epoxy groups. Such vulcanizates may be used in tir
4179421 Silica filled vulcanizates December 18, 1979
A process, and the product thereof, is provided for the production of improved silica filled rubbery vulcanizates which process comprises mixing a vulcanizable hydrocarbyl polymer containing epoxy groups and silica, shearing the mixture at an elevated temperature, incorporating vulca
4152308 Siliceous filled vulcanizates May 1, 1979
There is provided a process, and the product of that process, for the production of improved silica or calcium silicate filled rubbery vulcanizates which comprises the preparation of a mixture comprising a vulcanizable hydrocarbyl polymer containing hydroxyl groups, silica or calcium
4150015 Vulcanizates containing silica April 17, 1979
A process is provided, and the product of that process, for the production of improved silica filled rubbery vulcanizates in which process a mixture is prepared comprising 100 parts by weight of a vulcanizable hydrocarbyl polymer containing hydroxyl groups, about 5 to about 100 parts by
4150014 Vulcanizates containing siliceous fillers April 17, 1979
There is provided a process, and the product of that process, for the production of improved silica or calcium silicate filled rubbery vulcanizates in which a polymer containing hydroxyl groups is mixed with silica or calcium silicate and an amine, the mixture is subjected to shearin
4138389 Polymeric antioxidants February 6, 1979
Vulcanizable compositions contain in admixture a synthetic high molecular weight polymer and a compatible low molecular weight polymer containing a multiplicity of antioxidant functional groups chemically bound to the polymer. Vulcanizates derived from these compositions have improved ag










 
 
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