National Starch and Chemical Investment Holding Corporation

National Starch and Chemical Corporation

Eric A Meier

Dilip K Ray-Chaudhuri

John J Tsai

Jules E Schoenberg

Craig H Leake

A process for preparing methyl .alpha.-cyanoacrylate in which methyl cyanoacetate is reacted with formaldehyde to form a polymer, which is subsequently depolymerized to the monomeric product, comprises using an ester of poly(ethylene glycol) as the solvent for the polymerization and depolymerization reactions.

Process for the manufacture of methyl cyanoacrylate

A water resistant, starch-based alkaline corrugating adhesive which includes a polysaccharide graft copolymer containing a reactive aminoethyl halide group.

Water resistant alkaline corrugating adhesive composition and paperboard

A polysaccharide graft copolymer containing a reactive aminoethyl halide group is provided, said copolymer represented by:

Polysaccharide graft copolymers containing reactive aminoethyl halide

This invention presents a method for the preparation of isophthalaldehyde in an all-aqueous solution using m-xylenediamine, hexamethylenetetramine, and HCl as the only reactants. Such a process permits the preparation of high yield of a high purity product.

Process for the preparation of isophthaladehyde

A mixture of methyl anthranilate, dissolved in a water-miscible solvent, with a solution of formaldehyde is reduced in a hydrogen atmosphere in the presence of a hyrogenation catalyst at moderate temperatures and pressures to yield methyl N-methylanthranilate. The invention provides a process which is feasible towards producing the compound in commercial quantities in high purity and good yield.

Process for the preparation of methyl N-methylanthranilate

Improved storage-stable anaerobic curing adhesive compositions useful as anaerobic adhesives and sealants are prepared by first mixing a polymerizable acrylate ester monomer, an inhibitor for free radical polymerization, a chelator, and at least an effective amount of an accelerator system consisting of an N-substituted sulfonamide and an aromatic tertiary amine. The resultant homogeneous mixture is thereafter maintained at a temperature of at least about 20.degree. C. for a period of time sufficient to provide the composition with anaerobic curing properties and a specified minimum amount of active oxygen. In one embodiment, the mixture is stirred at a temperature of 45.degree.-80.degree. C. for 10-30 hours. In another embodiment, the mixture is maintained at an elevated temperature without stirring.

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Hamilton Square, NJ, United States of America

Eric A Meier