Gaf Corporation

Eugene V Hort

R Parthasarathy

Lowell R Anderson

Waldo R De Thomas

Dru W Alwani

Earl P Williams

Paritosh M Chakrabarti

Stanley J Gromelski, Jr

William L Mandella

I Sioun Lin

The invention relates to highly filterable polyvinyl polypyrrolidone particles and to the process for improving filterability of standard polyvinyl polypyrrolidone granules which comprises treating granular polyvinyl polypyrrolidone, containing a minor amount of non-cross-linked and/or unsaturated sites and having a number average molecular weight greater than 100,000, with ozone at a temperature selected from within the ranges consisting of from about -15.degree. C. to 35.degree. C. and from 85.degree. C. to about 150.degree. C. and collecting the ozone treated product, which has a flow rate index (FRI) increased by at least 25%.

Insoluble vinyl lactam clarifiers

This invention relates to the reaction products of butyrolactone and an aliphatic amine utilizable as a chain extender and curing agent for castable polyurethanes and to the process employing said products in preparing castable polyurethane elastomers and to the process for preparing the butyrolactone amine adducts. The aliphatic amine reactants employed in preparing the butyrolactoneamine adducts are defined by the formula: ##STR1## wherein X is amino (--NH.sub.2) or hydroxy (--OH); R is hydrogen (--H) or methyl (--CH.sub.3) and n has a value of 1 to 2, which amines are reacted with butyrolactone in a mole ratio of between about 1:1 and about 1:3 to provide a curing agent having superior mechanical properties and having the formula: ##STR2## wherein R is hydrogen or methyl, R' is a hydroxy group or ##STR3## and n has a value of 1 or 2.

Alcohol substituted amides as chain extenders for polyurethanes

An aqueous composition for inhibiting the corrosion of metals placed therein is described. The composition comprises a non-oxidizing acid, and, as a corrosion inhibitor, an effective amount of a 3-dialkylamino-3-phenylethenylprop-1-yne.

Corrosion inhibitors including a 3-dialkylamino-3-phenylethenylprop-1-yne

An aqueous composition for inhibiting the corrosion of metals is described. The composition comprises a non-oxidizing acid, and, as a corrosion inhibitor, an effective amount of a 3-dialkylamino-3-(1-ethylpentyl)prop-1-yne.

Corrosion inhibitors containing 3-dialkyl-3-(1-ethylpentyl)-prop-1-yne

The present invention relates to an improved method for the vinylation of pyrrolidone with acetylene in the presence of an alkali metal salt of said pyrrolidone as a catalyst, by the addition of between about 0.2 and about 8 weight-%, based on total feed, of a polyoxyalkylene glycol; a polyoxyalkylene phenol, optionally substituted with an alkyl group; a polyoxyalkylene ether or mixtures thereof; said polyoxyalkylene compound having a number average molecular weight of between about 175 and 2,000 and containing between 4 and 40 oxyethylene and/or oxypropylene units. The invention also pertains to a novel coacting catalyst composition for use in vinylation reactions comprising said alkali metal salt of said pyrrolidone in admixture with said polyoxyalkylene compound.

Vinylation reaction

An aqueous composition for inhibiting the corrosion of metals placed therein is described. The composition comprises a non-oxidizing acid, and, as a corrosion inhibitor, an effective amount of a 3-di(higher)alkylamino-3-phenylprop-1-yne.

Corrosion inhibitors

A corrosion inhibitor for aqueous solutions of mineral acids consisting essentially of the reaction product obtained by the catalytic ethynylation of a dialkylamine, a substituted benzaldehyde and acetylene, said reaction product being a complex material which contains predominately a 3-dialkylamino-3-(substituted phenyl) prop-l-yne.

Corrosion inhibitor comprising the ethynylation reaction product of a

An aqueous composition for inhibiting the corrosion of metals placed therein is described. The composition comprises a non-oxidizing acid and, as a corrosion inhibitor, an effective amount of a 3-dialkylamino-3-(substituted phenyl)-prop-1-yne.

This invention describes a method of regenerating the activity of deactivated supported-nickel catalysts that have lost activity after use as a hydrogenation catalyst in the finishing stage of the process of conversion of butynediol to butanediol. The method comprises contacting said deactivated catalyst with hydrogen at a temperature of about 200.degree. to 500.degree. C. to convert surface polymers to gaseous compounds and removing said gaseous compounds from the vicinity of the thus-treated catalyst. In the preferred form of the invention, in a single step, a slow stream of hydrogen is passed through the deactivated catalyst in situ as a fixed bed and the gaseous compounds are removed simultaneously in the hydrogen stream.

Regeneration of supported-nickel catalysts

Alkenes and/or alkadienes are contacted with molecular oxygen and an oxidative dehydrogenation catalyst consisting essentially of silver, molybdenum and oxygen, and at least one promotor selected from the group consisting of phosphorus, arsenic, antimony and bismuth.

Catalytic oxidative dehydrogenation of alkenes or alkadienes to furan

Alkenes and/or alkadienes are contacted with molecular oxygen and an oxidative dehydrogenation catalyst consisting essentially of silver, molybdenum and oxygen, with the silver-to-molybdenum atom ratio being in the range of about 0.25:1 to about 10:1 to produce furan compounds.

Oxidative dehydrogenation of alkenes or alkadienes to furan compounds

Solid catalysts for oxidative dehydrogenation of alkenes or alkadienes

Alkenes and/or alkadienes are contacted with molecular oxygen and an oxidative dehydrogenation catalyst consisting essentially of silver, phosphorus and oxygen, with the silver-to-phosphorus atom ratio being in the range of about 0.25:1 to about 10:1 to produce furan compounds.

2-Pyrrolidone is purified by contact with particulate calcium oxide for a sufficient time at elevated temperatures followed by distilling and condensing the purified 2-pyrrolidone.

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Wayne, NJ, United States of America

Eugene V Hort