The Dow Chemical Company

The Firestone Tire & Rubber Company

Louis W Meyer

Robert Carswell

J Alan Vanderhider

Donald L Schmidt

James Oziomek

Tristram W Bethea

James A Vanderhider

Demetrius Urchick

Joseph H Tazewell

Linda M McKinney

Douglas K Hillshafer

Don H Kelley

J Aloan Vanderhider

Internal mold release compositions for use in preparing molded polymeric products are disclosed which contain (a) a primary or secondary amine, (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.

Internal mold release compositions

A process for preparing molded polymeric products including reacting a polyisocyanate with an active hydrogen-containing composition having internal mold release components. In the process, the active hydrogen-containing composition contains (a) a primary or secondary amine, (b) a metal salt of an organic material having a carboxylic acid group and a siloxane chain wherein, said metal is selected from Groups I-B, II-B, IV-B, V-B, VI-B, VII-B or VIII, and optionally (c) an organic material containing at least one carboxylic acid group, phosphorus-containing acid group or boron-containing acid group wherein said organic material contains a siloxane chain or contains a terminal or pendant aliphatic hydrocarbon chain.

Process of preparing molded products using an internal hold release agent

Internal mold release compositions for use in preparing molded polymeric products are disclosed which contain (a) a primary or secondary amine, (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido caroxylic acid.

Active hydrogen-containing compositions having internal mold release components are used in a process in preparing molded polymeric products. In the process, the active hydrogen-containing composition contains (a) a primary or secondary amine, (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.

Active hydrogen-containing compositions having internal mold release components for use in preparing molded polymeric products are disclosed which contain (a) a primary or secondary amine, (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.

Internal mold release compositions for use in preparing molded polymeric products are disclosed which contain (a) a primary or secondary amine (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.

Increased reactivity of isocyanate terminated polyether prepolymers with metal halide salt complexes of methylenedianiline is obtained when the polyether intermediates are modified to contain an effective amount of ethylene oxide. A desired intermediate is poly(oxypropylene) diol or triol which are modified to contain ethylene oxide units therein and subsequently reacted with a polyisocyanate such as MDI, that is 4,4'-diphenylmethane diisocyanate, or TDI, that is, toluene diisocyanate. A desired metal halide salt complex of methylenedianiline is the sodium chloride salt complex (MDA.sub.3 -NaCl), dispersed in dioctylphthalate (50/50 wt/wt).

Increased reactivity of isocyanate terminated polyether prepolymers with

This invention is an improvement in a process for preparing a polyurethane backed substrate whereby a reacting polyurethane forming mixture comprising at least one polyahl and at least one polyisocyanate as applied to a substrate and subsequently curing thereon to form an attached polyurethane backing. The improvement which is this invention comprises employing an organoiron or organobismuth catalyst for said polyurethane forming mixture. The organoiron or organobismuth catalyst is employed in an amount such that the polymer forming mixture exhibits the viscosity of not greater than about 20,000 cps 2 minutes after the polyahl and polyisocyanates are contacted in the presence of said catalyst at 20.degree.-50.degree. C. and the polyurethane forming mixture cures to a tack free state at an elevated temperature in the presence of said catalyst in less than about 8 minutes.

Polyurethane carpet backing catalyzed with organoiron and organobismuth

Coated internal surfaces of molding apparatus and a process for reducing the amount of sticking of material on the internal surface of a molding apparatus are disclosed. The coated substrate and the process both employ release compositions having very low surface tensions comprising (1) a linear or branched polymer containing ionic functional moieties and (2) a perfluorocarbon compound having a counterionic character. Such compositions dissolve in volatile acidic or basic solutions and result in salt precipitates which adhere to substrates upon the evaporation of the volatile acidic or basic solution.

Perfluorocarbon polymeric coatings having low critical surface tensions

Hydroxylated lecithins are employed as mold release agents in the preparation of molded articles from polyurethane-forming compositions. Polyol compositions containing such mold release agents are also disclosed.

Compositions containing mold release agents

Method for injection molding polyurethane using internal release agents

Hydroxyl substituted fatty acid amides are employed as mold release agents in the preparation of molded articles from polyurethane-forming compositions. Polyol compositions containing such mold release agents are also disclosed.

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Livingston, TX, United States of America

Louis W Meyer