Abstract: A method is disclosed for making a molded article of manufacture of polymerized .beta.-lactone which method involves injecting into a mold at least one .beta.-lactone monomer and at least one nucleophilic initiator, substantially polymerizing the .beta.-lactone in the mold and removing the resultant polymerized article from the mold.

Abstract: Stable high internal phase water-in-oil emulsions containing polymerizable vinyl monomers, crosslinking monomers and polymerization initiators are obtained by using saccharide fatty acid esters as surfactants. The amount of surfactants necessary to form stable high internal phase water-in-oil emulsions is decreased by using saccharide fatty acid esters as surfactants. Further, hydrophobic foams can be obtained by using saccharide fatty acid esters.

Abstract: Stable high internal phase water-in-oil emulsions containing polymerizable vinyl monomers, crosslinking monomers and polymerization initiators are obtained by using saccharide fatty acid esters as surfactants. The amount of surfactants necessary to form stable high internal phase water-in-oil emulsions is decreased by using saccharide fatty acid esters as surfactants. Further, hydrophobic foams can be obtained by using saccharide fatty acid esters.

Abstract: Novel stabilized compositions comprise organic material normally subject to oxidative degradation stabilized by the presence therein of a stabilizing quantity of a novel, at least partial ester of poly(vinylphenol) and a 3,5-dialkyl-4-hydroxybenzoic acid wherein at least one of the alkyl groups is a bulky alkyl.

Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon of at least 3 carbon atoms employs a novel catalyst composition formed from a palladium compound, the anion of a strong non-hydrohalogenic acid, an aliphatic bidentate ligand of phosphorus and a polyalkoxyalkane.

Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon comprises contacting the carbon monoxide and hydrocarbon under polymerization conditions in the presence of a reaction diluent and a novel catalyst composition formed from a palladium compound, a strong non-hydrohalogenic acid and a tetradentate aromatic phosphine ligand. The polymer products are of higher molecular weight and are produced at a faster rate than the more conventional process employing a catalyst composition formed from a bidentate ligand.

Abstract: In a process for the preparation of a low density porous crosslinked polymeric material by polymerizing a water-in-oil high internal phase emulsion, curing time of the monomers in the emulsion can be reduced without adversely affecting polymer properties or substantially affecting the emulsion by carrying out the curing in multiple-stages. The emulsion is first pre-cured at a temperature less than about 65.degree. C. until the emulsion reaches a Rheometrics dymanic shear modulus of at least about 500 and subsequently curing at a temperature above about 70.degree. C.

Abstract: Novel stabilized compositions comprise organic material normally subject to oxidative degradation stabilized by the presence therein of a stabilizing quantity of a novel, at least partial ester of poly(vinylphenol) and a 3,5-dialkyl-4-hydroxybenzoic acid wherein at least one of the alkyl groups is a bulky alkyl.

Abstract: Regio-regular copolymers of carbon monoxide and an ethylenically unsaturated hydrocarbon are produced by contacting the carbon monoxide and hydrocarbon under polymerization conditions in the presence of a more active catalyst composition formed from a palladium compound, the anion of a strong nonhydrohalogenic acid, and a tetraalkyl diphosphine ligand.

Abstract: A curable composition containing a dicyanate ester, a bisimide and a bisbenzocyclobutene provides a processable cyanate ester which has improved toughness in the cured state.

Abstract: An improved process for the production of linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon comprises the contacting of the monomeric reactants under polymerization conditions in the presence of a reaction diluent and a catalyst composition formed from a palladium compound, the anion of a non-hydrohalogenic strong acid and a mixture of tetraaryl diphosphine ligands; one of which diphosphines has an ortho alkoxy substituent on each aryl moiety and one of which is free from alkoxy substitution in ortho positions. The process is characterized by a relatively high degree of catalyst activity and a low degree of reactor fouling.

Abstract: The cured products produced from arylcyclobutenealkyl diethers of oligomers containing a plurality of aromatic rings at least two of which are joined by a sulfone moiety are self-curing at temperatures above about 150.degree. C. The cured products exhibit good properties of strength and toughness.

Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon comprises contacting the carbon monoxide and hydrocarbon under polymerization conditions in the presence of a reaction diluent and a novel catalyst composition formed from a palladium compound, a strong non-hydrohalogenic acid and a tetradentate aromatic phosphine ligand. The polymer products are of higher molecular weight and are produced at a faster rate than the more conventional process employing a catalyst composition formed from a bidentate ligand.

Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon of at least 3 carbon atoms employs a novel catalyst composition formed from a palladium compound, the anion of a strong non-hydrohalogenic acid, an aliphatic bidentate ligand of phosphorus and a polyalkoxyalkane.

Abstract: The relative average stereoregular character of a stereoregular linear alternating polymer of carbon monoxide and aliphatic .alpha.-olefin of at least 3 carbon atoms is enhanced by contacting a stereoregular linear alternating polymer with certain selective solvents and obtaining as a residue of such contacting a polymer of enhanced average stereoregular character.

Abstract: An improved process for the production of linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon comprises the use as a catalyst composition of a novel complex containing a diphosphine/hydrocarbylpalladium cation and an anion of a non-hydrohalogenic acid having a pKa below 2. The polymers are useful as engineering thermoplastics.

Abstract: When a linear alternating polymer of carbon monoxide and a cyclopentene compound is produced in the presence of a catalyst composition comprising a compound of palladium, and anion of a non-hydrohalogenic acid having a pKa below 2 and a bidentate ligand, an improved process results when an aromatic meta-dinitro compound is provided to the catalyst composition mixture.

Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon comprises contacting the carbon monoxide and hydrocarbon under polymerization conditions in the presence of a reaction diluent and a novel catalyst composition formed from a palladium compound, a strong nonhydrohalogenic acid and a tetradentate aromatic phosphine ligand. The polymer products are of higher molecular weight and are produced at a faster rate than the more conventional process employing a catalyst composition formed from a bidentate ligand.

Abstract: An improved process for the production of linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon employs a novel catalyst composition formed from a compound of palladium, an anion of a strong non-hydrohalogenic acid and a supported bidentate ligand of phosphorus. The improved process is characterized by a reduced level of reactor fouling. The polymer products are useful as engineering thermoplastics.

Abstract: Polymeric polypyridines are produced by reaction of an aminopyridine or aminoalkylpyridine with a linear alternating copolymer of carbon monoxide and ethylene in an aprotic reaction diluent.