Ici Americas, Inc.

Hercules Corporation

Marathon Oil Company

Charalambos J Phalangas

Alfred J Restaino

George R Titus

Ronald I Davis

Thomas P Cleary

Lau S Yang

Leon W Wright

Donald J Gosciniak

HanBo Yun

Han Bo Yun

Polymers having pendent cationic quaternary nitrogen containing groups form salts with allantoin which provide for a film forming moisture barrier in skin conditioning lotions, ointments, cosmetics conditioning treatments, and pharmaceutical formulations.

Allantoin salts of quaternary nitrogen containing polymers for use in

Sunscreen compositions are described which contain certain 5-phenylpentadienoate esters which act as UV filters when incorporated in a carrier in amounts ranging from 0.1-50% by weight.

Ultraviolet radiation absorbing compositions

Sunscreen compositions are described which contain certain substituted naphthalenylidenes which act as UV filters when incorporated in a carrier in amounts ranging from 0.1-50% by weight.

Ultraviolet radiation absorbing naphthalenylidene compositions

Sunscreen compositions are described which contain certain cyclohexenylidenyl which act as UV filters when incorporated in a carrier in amounts ranging from 0.1-50% by weight.

Ultraviolet radiation absorbing cyclohexenylidene method

Sunscreen compositions are described which comprise a carrier having incorporated therein in an amount effective to provide protection against the harmful effects of ultraviolet radiation a compound of the formula: ##STR1## wherein X is --O-- or --NH--; R, R.sup.2, R.sup.3, R.sup.4, is H, CH.sub.3, --CN, --C.sub.2 H.sub.5 and OH, --OCH.sub.3, --OC.sub.2 H.sub.5 ; R' is selected from an alkyl, alkenyl, aryl or alkyl substituted aryl radical having 5-18 carbon atoms and the radical OR.sup.5 where R.sup.5 is an alkyl, alkenyl, aryl or alkyl substituted aryl radical having 6-18 carbon atoms.

Polyvinyl alcohol polymers having pendant cationic quaternary nitrogen containing groups provide for a film forming moisture barrier in skin conditioning lotions, ointments, cosmetic conditioning treatments and pharmaceutical formulations.

Quaternary nitrogen containing polyvinyl alcohol polymers for use in

Polyvinyl alcohol polymers having oxy-linked pendant quaternary ammonium or tertiary amine groups provide a thin film which aids in reducing moisture loss when applied to skin as conditioning lotions or ointments in cosmetic and pharmaceutical formulations.

Amine and ammonium nitrogen containing polyvinyl alcohol polymers having

Improved flooding of oil-bearing formations is obtained by injecting and displacing through the formation a water-soluble, substantially linear, high molecular weight polymer obtained by irradiating an aqueous solution of an ethylenically unsaturated monomer and a water-soluble salt under controlled conditions of concentration, radiation intensity, conversion, and total radiation dose.

Process for recovering oil from subterranean formations

Improved process for the preparation of water-soluble, high molecular weight imidazole polymers comprising irradiating an aqueous solution of an imidazole monomer and a chemical, free-radical initiator under conditions to cause radiation-induced polymerization of the monomer, terminating radiation of the system when less than all the monomer has been converted to polymer and when the temperature of the system is such that the chemical, free-radical initiator dissociates with the proper rate to sustain polymerization, and continuing the polymerization to completion by the free radicals generated by the thermal decomposition of the chemical initiator. The radiation-induced polymerization is terminated before more than 95% of the monomer is converted to polymer and preferably before 90% of the monomer is converted to polymer. The remaining monomer is converted to polymer by the free radicals generated by the thermal decomposition of the chemical initiator. Reaction conditions include: monomer concentrations from 15% to 90% by weight, radiation intensities of 10,000 to 1,000,000 rads per hour, and radiation dose from 5,000 to 500,000 rads.

Imidazole polymers and preparation thereof with radiation and chemical

Improved process for the preparation of water-soluble, substantially linear, high molecular weight polymers, comprising irradiating an aqueous solution of an ethylenically unsaturated monomer and a water-soluble salt under controlled conditions of concentration, radiation intensity, conversion, and total radiation dose. The polymers may be obtained in aqueous gel form or recovered in the form of powder. The polymers are useful as flocculating, thickening, and mobility control agents.

Polymerization of unsaturated monomers with radiation in the presence of

Improved process for the preparation of water-soluble substantially linear, high molecular weight polymers comprising irradiating an aqueous solution of an ethylenically unsaturated monomer and a chemical, free-radical initiator under conditions to cause radiation-induced polymerization of the monomer, terminating radiation of the system when less than all the monomer has been converted to polymer and when the temperature of the system is such that the chemical, free-radical initiator dissociates with the proper rate to sustain polymerization, and continuing the polymerization to completion by the free radicals generated by the thermal decomposition of the chemical initiator. The radiation-induced polymerization is terminated before more than 95% of the monomer is converted to polymer and preferably before 90% of the monomer is converted to polymer. The remaining monomer is converted to polymer by the free radicals generated by the thermal decomposition of the chemical initiator. Reaction conditions include: monomer concentrations from 10% to 60% by weight, radiation intensities of 1,000 to 1,000,000 rads per hour, and radiation dose from 1,000 to 150,000 rads.

Growing community of inventors

Wilmington, DE, United States of America

Charalambos J Phalangas