American Cyanamid Company

Frank F Loffelman

Thomas E Brady

Robert Edward Misner

Paul S Waterman

Richard A Parent

William Baptist Hardy

Joseph A Hoffman

Joseph Anthony Stretanski

Frank F Cesark

Bennett G Buell

A method of stabilizing an acid cured coating formulation against photo and/or thermal degradation without adverse effect on acid cure is disclosed. The method discloses incorporating a stabilizingly effective amount of a hindered amine light stabilizer (HALS) represented by Formula I: ##STR1## wherein R is a saturated or unsaturated, optionally alkyl- or alkenyl-substituted alkylene or cycloalkylene radical having 2-20 C-atoms and R' is selected from the group consisting of:

Low basicity hindered amine light stabilizers

Polyolefin compositions which are pigmented with titanium dioxide are rendered actinic radiation stabilized by incorporating therein a C.sub.12-20 alkyl ester of 3,5-di-tert.butyl-4-hydroxybenzoic acid.

Stabilized titanium dioxide-pigmented polyolefin compositions

Compounds of the formula: ##STR1## wherein at least one of the groups contains a 4-piperidinyl moiety are disclosed as light stabilizers for polymers.

Polymer compositions stabilized with triazinyl-piperidine compounds

Polymers based upon a monomer of the formula ##STR1## wherein R or R.sup.1 contain a polymerizable double bond are useful as ultraviolet light stabilizers for polymers.

Novel polymeric light stabilizers for polymers

A method of stabilizing a polymer which is normally subject to degradation by UV radiation by incorporating therein an ultraviolet stabilizingly effective amount of a polymer based upon a monomer of the formula ##STR1## wherein R or R.sup.1 contain a polymerizable double bond.

Method of stabilizing a polymer from degradation by UV radiation

Oligomers of the formula: ##STR1## wherein at least one of the substituents contains a piperidyl group are disclosed as light stabilizers for polymers. Also disclosed is a method for stabilizing a polymer which is normally subject to degradation by ultraviolet radiation, by incorporating therein an ultraviolet stabilizingly effective amount of such oligomer.

Novel light stabilizers for polymers

Compounds of the formula ##STR1## wherein at least one of the groups contains a 4-piperidinyl moiety are disclosed as light stabilizers for polymers.

Triazinyl-piperidines as light stabilizers for polymers

Oligomers prepared from alkoxycarbonylalkyleneamino halotriazines and diamines are useful as light stabilizers for polymers subject to ultraviolet radiation degradation.

Light stabilizers for polymers containing hindered

Polymers and oligomers of the formula ##STR1## are useful as ultraviolet light stabilizers for various polymers, especially polyolefins.

Polymers derived from

Polymers of the following monomer ##STR1## wherein R and/or R.sup.1 contains a polymerizable double bond are disclosed as light stabilizers for polymers.

Ultraviolet light stabilizers for polymers are disclosed. The stabilizers have the formula ##STR1##

Isopropylidenedicyclohexylene esters of 2,2,6,6-tetramethylpiperidine-4-carboxylic acid are disclosed as well as their use as light stabilizers for thermoplastic polymers such as polypropylene.

Isopropylidenedicyclohexylene esters and their use as light stabilizers

Ketonimine dyes of the formula selected from: ##STR1## wherein X.crclbar. is a chloride, bromide, thiocyanate, sulfamate, formate, acetate, lactate, hydrogen sulfate or dihydrogen phosphate ion; and ##STR2## wherein Y is a sulfate or hydrogen phosphate ion are hydrosulfite bleachable dyes for paper.

Hydrosulfite-bleachable ketonimine dyes for paper

Cationic dyes for paper having the formula: ##STR1## wherein R is selected from hydrogen and methyl, X is selected from 0 and NH, n is 2 or 3, and Y.sup.- is an anion selected from halide and methosulfate, have improved storage stability in aqueous acid solutions.

Cationic alpha-cyano-p-dimethylaminocinnamoyl dyes and paper dyed

A method for dyeing hair and other keratinaceous materials with certain amino, hydroxy, methoxy and nitro-containing indoline, indole and indazole compounds, and combinations thereof, and keratinaceous fibers dyed therewith.

Growing community of inventors

Bridgewater, NJ, United States of America

Frank F Loffelman