Composition for inhibiting stress cracks in plastic articles and methods of use therefor
AssigneeDiversey, Inc.
InventorsCharles E. Rossio, Theodore E. Anderson
Life of this patent
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Abstract
Stress cracking in poly(alkylene terephthalate) articles of manufacture is inhibited by applying to the article a stress crack inhibitor which contains an amine having at least 6 carbon atoms. In a preferred embodiment, the stress crack inhibitor is applied to the article in the form of an aqueous fatty acid-based lubricant.
Claims15
A method of inhibiting stress cracking in a poly(alkylene terephthalate) article, comprising the step of applying a composition comprising an amine to a surface of the article, the amine having at least 6 carbon atoms.
A method of inhibiting stress cracking in a poly(alkylene terephthalate) article, comprising a step of applying a composition to a surface of the article, the composition comprising:
- (a) an alkyl amine having from 2-12 carbon atoms, and
- (b) an aryl sulfonate.
A method of inhibiting stress cracking in a poly(alkylene terephthalate) article of manufacture, comprising a step of applying a dilute aqueous-based lubricant use solution to an exterior surface of the article, the use solution comprising an alkyl amine having at least 6 carbon atoms, a fatty acid or a mixture of fatty acids, a sequestrant, and water.
A method of inhibiting stress cracking in a poly(alkylene terephthalate) container, comprising adding an amine having at least 6 carbon atoms to the interior of the container.
An aqueous-based fatty acid lubricant concentrate, comprising:
- (a) a long-chain fatty acid;
- (b) an alkyl amine having at least 6 carbon atoms;
- (c) a sequestrant;
- and
- (d) water.
Dependencies are inferred from the claim text.