William F. Christie - Westfield NJ Lawrence A. Smalheiser - Spring Valley NY
Assignee:
Stauffer Chemical Company - Westport CT
International Classification:
C08K 334
US Classification:
524443
Abstract:
Polymeric materials, for example, vinyl materials contain an added trace amount of a compound which is detectable by an instrumental method of analysis in the absence of the step of freshly exposing a surface of the sample and without substantial interference from other ingredients in the vinyl material. The incorporation of the added trace compound allows for coding of the material and provides a means to later identify the manufacturer of the film without the need to affix more visible identification means thereto.
The incorporation of a copolymer of vinyl chloride and a bis(hydrocarbyl) vinylphosphate, e. g. , bis(beta-chloroethyl) vinylphosphate, in a polyurethane foam formulation confers flame retardancy on the foam and lessens discoloration that occurs when the foam is formed.
Process For Removing Ethylenically Unsaturated Chlorinated Hydrocarbons From Gas Streams
The invention is a method for reducing the amount of ethylenically unsaturated chlorinated hydrocarbons in gaseous mixtures. The method comprises providing a gas stream containing the ethylenically unsaturated chlorinated hydrocarbon and ozone by admixing ozone with a gas stream containing ethylenically unsaturated chlorinated hydrocarbons or introducing the ethylenically unsaturated chlorinated hydrocarbons into a gas stream containing ozone, and permitting the gas containing the ethylenically unsaturated chlorinated hydrocarbons and ozone to react for a sufficient length of time to reduce the amount of ethylenically unsaturated chlorinated hydrocarbon in the gas stream. The method is particularly useful for removing small amounts of vinyl chloride from gaseous streams thereby substantially reducing or eliminating the emission of such contaminants into the environment.
Process For Absorption Of So.sub.2 Into Phosphate Absorbent
Higher loadings of SO. sub. 2 into an aqueous phosphate absorbent are achieved by use of a pH of no less than about 4. 5 and a molarity (e. g. , 3. 0 or above) which produces a greater SO. sub. 2 absorption than expected.
Lawrence Smalheiser 1989 graduate of Las Lomas High School in Walnut creek, CA is on Classmates.com. See pictures, plan your class reunion and get caught up with Lawrence and other high school alumni