Ici Americas, Inc.

Richard V Nelson

John F Stephen

Oligomeric polyesters and polyamides containing dipiperidyl triazine moieties are effective light stabilizers for synthetic polymers and particularly polyolefins.

Oligomeric polyesters and polyamides containing dipiperidyl triazine

Tetramethylpiperidyl terminated triazine oligomeric esters and amides having a plurality of tetramethyl piperidyl moieties are useful as polymer additives to impart resistance to degradation when exposed to actinic radiation.

Tetramethyl piperidyl terminated triazine oligomeric esters and amides

Melamine-based compounds having a multiplicity of 2,2,6,6-tetraalkyl piperidine moieties are light stabilizers for organic polymers.

Melamine-based light stabilizers for plastics

Triazine-based compounds having a multiplicity of 2,2,6,6-tetraalkyl piperidine moieties are light and thermal stabilizers for organic polymers.

Triazine-based light stabilizers for plastics

Acetal esters and amides possessing the polyalkyl piperidin-4-yl moiety are useful light stabilizers with synthetic polymer resins such as polyolefins and, in particular, polypropylene.

Tetraalkyl piperidylated stabilizers for plastics

Monomeric and oligomeric derivatives of the dialkyl esters of polyalkyl 1,5-dioxa-9-azaspiro-[5.5]undecane-3,3-diacetic acid are useful light stabilizers for synthetic polymer resins such as polyolefins, and in particular, polypropylene.

Monomeric and oligomeric glutarate-based light stabilizers for plastics

A method of preparing certain 2-halo-5-methylpyridines, useful as herbicide intermediates, is presented starting from acyclic pentenes. The pentene is difunctionalized, e.g., by making the epoxide, and is then reacted with a nitrogen source to close the ring. The nitrogen-containing 6-membered heterocycle may then be aromatized readily to produce the 2-halo-5-methylpyridine desired. Also part of the invention are novel acyclic and cyclic intermediates used in the process.

Pentene derivatives

Malonate-based spiroacetals of polyalkylpiperidin-4-ones are useful light stabilizers for synthetic polymer resins such as polyolefins, and in particular, polypropylene.

Malonate-based light stabilizers for plastics

Preparation of 2-halo-5-methylpyridines from 4-methyl-4-pentene

Malonate-derived acetal esters and amides possessing the polyalkyl piperidin-4-yl moiety are useful light stabilizers with synthetic polymer resins such as polyolefins and, in particular, polypropylene.

Monomeric and oligomeric derivatives of the diethyl ester of polyalkyl 1,4-dioxa-8-azaspiro-[4.5]-decane-2,3-dicarboxylic acid are useful light stabilizers for synthetic polymer resins such as polyolefins, and in particular, polypropylene.

Tartrate-based light stabilizers for plastics

Oligomeric derivatives of the dialkyl esters of polyalkyl 1,5-dioxa-9-azaspiro-[5.5]undecane-3,3-dicarboxylic acid are useful light stabilizers for synthetic polymer resins such as polyolefins, and in particular, polypropylene.

Oligomeric malonate-based light stabilizers for plastics

Tartrate-derived acetal esters and amides possessing the polyalkyl piperidin-4-yl moiety are useful light stabilizers with synthetic polymer resins such as polyolefins and, in particular, polypropylene.

A method of preparing certain 2-halo-5-methylpyridines, useful as herbicide intermediates, is presented starting from acyclic pentenes. The pentene is difunctionalized, e.g., by making the epoxide, and is then reacted with a nitrogen source to close the ring. The nitrogen-containing 6-membered heterocycle may then be aromatized readily to produce the 2-halo-5-methyl-pyridine desired. Also part of the invention are novel acyclic and cyclic intermediates used in the process.

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Wilmington, DE, United States of America

Richard V Nelson