Atlantic Richfield Company

Arco Chemical Company

James M Gaul

Tinh Nguyen

Gary L Statton

Garry L Statton

An improvement is provided in the compression molding of lignocellulosic composite articles, such as particle or flake board, in which polyisocyanate binder systems are employed, the improvement being the provision of a novel copolymeric reaction product of a functional polysiloxane and a monocarboxylic acid or metal salt thereof as release agent on the mold surfaces to give multiple release. Optionally organopolysiloxane fluid may be employed along with the copolymer as diluent.

Copolymeric composition of a functional polysiloxane and a carboxylic

An improvement is provided in the compression molding of lignocellulosic composite articles, such as particle or flake board, in which polyisocyanate binder systems are employed, the improvement being the provision of a novel functional polysiloxane-hydroxyle substituted mono-carboxylic acid or metal salt-isocyanate terpolymer as a release agent on the mold surface or surfaces to give multiple release. Optionally, organopolysiloxane fluids may be employed along with the terpolymer release agent as a diluent.

Terpolymer composition comprising a functional polysiloxane, an

Fire retardant flexible polyurethane foams are prepared with reduced scorch and discoloration by the addition of a stabilizing amount of from about 1 to about 12 parts by weight of a cyclic alkylene carbonate to the formulation, based on the weight of the polyester polyol employed, without affecting the fire retardancy of the foam product.

Preparation of fire retardant flexible polyester based polyurethane

Fire retardant flexible polyurethane foams are prepared with reduced scorch and discoloration by the addition of a stabilizing amount of from about 1 to about 12 parts by weight of a cyclic alkylene carbonate to the formulation, based on the weight of the polyether polyol employed, without affecting the fire retardancy of the foam product.

Preparation of fire retardant flexible polyurethane foams having reduced

A binder system is provided for the preparation of lignocellulosic composite molded articles, such as flake or particle board, which incorporates an internal release agent and comprises an emulsifiable organic di- or polyisocyanate and an emulsifiable carboxy functional siloxane. The emulsifiable carboxy functional siloxane is preblended with the di- or polyisocyanate providing for increased mold release properties.

Preparation of molded lignocellulosic compositions using an emulsifiable

An adhesive binder composition is provided for the preparation of lignocellulosic composite molded articles such as flake or particle board, made from moldable compositions which comprises an organic di- or polyisocyanate a liquid aromatic epoxide and lignin, for application to the lignocellulosic material prior to the molding process to form the composite product.

Organic polyisocyanate-liquid aromatic epoxide-lignin adhesive binder

Polyoxyalkylene polyether polyols are stabilized against oxidative degradation by incorporating therein a synergistic stabilizing composition containing (1) a mixture of butylated phenols consisting of 2-tertiary butyl phenol, 3,5-ditertiary butyl-4-hydroxyhydrocinnamate and 1,6-hexamethylene bis(3,5-ditertiary-butyl-4-hydroxyhydrocinnamate) or tetrakis [methylene(3,5-ditertiary butyl-4-hydroxyhydrocinnamate)] methane (2) a p,p'-dialkyldiphenylamine such as p,p'-dioctyldiphenylamine and (3) a phenothiazine compound. Polyurethane foams are stabilized against scorching when the stabilized polyols are utilized in the foam preparation or the stabilizing composition is added with other reactants.

Stabilized polyoxyalkylene polyether polyols and polyurethane foams

An improved adhesive binder composition is provided for the preparation of lignocellulosic composite molded articles such as flake or particleboard, made from moldable compositions which comprises an organic di- or polyisocyanate and a cyclic alkylene ester of carbonic acid and optionally lignin, for application to the lignocellulosic material prior to the molding process to form the composite product.

Organic polyisocyanate-cyclic alkylene carbonate adhesive binder

An improved adhesive binder composition is provided for the preparation of lignocellulosic composite molded articles, especially flake or particleboard, made from moldable compositions which comprises an organic polyisocyanate-alkylene oxide or halogenated alkylene oxide and optionally lignin, for application to the lignocellulosic material prior to the molding process to form the composite product.

Organic polyisocyanate-alkylene oxide adhesive composition for preparing

An adhesive binder composition is provided for the preparation of lignocellulosic composite molded articles such as flake or particle board, made from moldable compositions which comprises an organic di- or polyisocyanate and a liquid mixture of ethylene carbonate and propylene carbonate and optionally lignin, for application to the lignocellulosic material prior to the molding process to form the composite product.

Mixed ethylene and propylene carbonate-containing organic polyisocyanate

An adhesive binder composition is provided for the preparation of lignocellulosic composite molded articles such as flake or particle board, made from moldable compositions which comprises an organic di- or polyisocyanate and a liquid dialkyl ester of carbonic acid and optionally lignin, for application to the lignocellulosic material prior to the molding process to form the composite product.

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Exton, PA, United States of America

James M Gaul