Abstract: A catalyst for polymerizing olefins is the product resulting from mixing in an inert hydrocarbon diluent, a mixture of (A) an inorganic oxide, (B) an organomagnesium material, (C) an organic hydroxyl-containing material, (D) a reducing halide source, and (E) a transistion metal compound.

Abstract: Novel advanced epoxy resins are disclosed which are the product resulting from (I) polymerizing in the presence of a catalytic quantity of a suitable polymerization catalyst (A) the reaction product of (1) a mixture consisting of (a) a diglycidyl ether of a dihydric phenol or a diglycidyl ether of a dihydric cyclohexanol and (b) a diglycidyl ether of a mono-, di- or polyetherdiol with (2) a compound containing both a group reactive with an epoxide group and a polymerizable ethylenically unsaturated group; with (B) a monomer mixture containing (1) at least one vinyl aromatic monomer, (2) a compound containing both a group reactive with an epoxide group and a polymerizable ethylenically unsaturated group and optionally (3) a hydroxyalkyl acrylate or methacrylate or an alkyl acrylate or methacrylate; and (II) advancing in the presence of a catalytic quantity of a suitable advancement catalyst, the product from (I) with (C) a dihydric phenol.

Abstract: Curable compositions are prepared from reinforced epoxy resin compositions comprising (A) a filler material such as silica flour, (B) one or more epoxy resins at least one of which is a hydrocarbon novolac epoxy resin such as a phenol-dicyclopentadiene epoxy novolac resin and (C) one or more epoxy resin curing agents such as phenol-formaldehyde novolac resin. These compositions are particularly suitable for use in electrical applications such as the encapsulation and subsequent protection of electrical and micro-electronic devices and circuitry and in adhesive formulations.

Abstract: Thermosettable prepolymers are prepared by reacting (A) a heterocyclic material containing one or more rings and one nitrogen atom or a mixture of such materials wherein at least one of such materials contains at least two reactive substituent groups having at least one reactive hydrogen atom attached to a carbon atom which is attached to the ring such as 2,4,6-trimethyl pyridine; with (B) a cycloaliphatic or aromatic carboxylic acid mono- or dianhydride such as phthalic anhydride. These prepolymers or resins, can be homopolymerized without coreactants or copolymerized with N,N'-bis-imides such as 1,1'-(methylenedi-4,1-phenylene)bismaleimide, to produce products, mat castings or composites having good mechanical and thermal properties.

Abstract: Advanced epoxy resin products are prepared by reacting a triglycidyl ether of a trihydric phenol such as the triglycidyl ether of 1,1,1-tri(hydroxyphenyl)methane with a dihydric phenol such as bisphenol A. These advanced epoxy resins are non-sintering solid resins useful in the preparation of electrical potting or molding compositions.

Abstract: Advanced epoxy resins having a low total aliphatic halide content are prepared by reacting an epoxy resin having an average of more than one 1,2-epoxide group per molecule with a material having an average of more than one phenolic hydroxyl group per molecule in the presence of a solvent having at least one aliphatic hydroxide group per molecule and a catalytic quantity of an alkali metal hydroxide. These low aliphatic halide-containing advanced epoxy resins are useful in formulations for preparing laminates, moldings, pottings and coatings for the electronics industry.

Abstract: Thermoset products are prepared by polymerizing (A) at least one thermosettable compound which contains both a maleimide group and a cyanate group such as 3-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)phenyl cyanate and optionally (B) at least one of (1) at least one aromatic polycyanate such as bisphenol A dicyanate; (2) at least one polymaleimide such as N,N'-(methylenedi-p-phenylene)bismaleimide; (3) at least one material having an average of more than one vicinal epoxide group per molecule such as a diglycidyl ether of bisphenol A; (4) at least one polymerizable ethylenically unsaturated material such as styrene; or (5) a mixture of any two or more of components 1-4 in any combination.

Abstract: Thermosettable prepolymers or resins are prepared by reacting (1) a pyrazine compound containing at least two substituent groups which have a hydrogen atom attached to a carbon atom which is attached to the ring such as tetramethylpyrazine, (2) a material containing at least two aromatic aldehyde groups, and (3) at least one of (a) a nitrogen containing aromatic heterocyclic compound containing at least one hydrogen atom attached to a carbon atom attached to the ring and a polymerizable unsaturated group such as 2-methyl-5-vinylpyridine or (b) an aldehyde containing at least one polymerizable unsaturated group such as 4-isopropenyl-1-cyclohexene-1-carboxaldehyde. These prepolymers or resins are curable to thermoset products having good mechanical and thermal properties by heat and pressure or by homopolymerization or copolymerization with N,N'-bis-imides such as 1,1'-(methylenedi-4,1-phenylene)-bimaleimide. The prepolymers are suitable for preparing composites.

Abstract: Polymerizable compositions are disclosed which comprises a mixture of (A) at least one thermosettable compound which simultaneously contains both a maleimide group or substituted maleimide group and a cyanate group such as 3-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)phenyl cyanate and (B) at least one material containing a plurality of aromatic amine groups such as 4,4'-diaminodiphenylmethane. Also disclosed are mixtures of the above polymerizable compositions and (C) at least one other material selected from (1) aromatic polycyanates, (2) polymaleimides, (3) materials having an average of more than one vicinal epoxide group per molecule, (4) a polymerizable ethylenically unsaturated material and (5) any combination thereof. The cured, polymerized products are useful as coatings, structural or electrical laminates or composites, castings, and the like.

Abstract: Novel compositions are prepared by reacting methyl substituted nitrogen-containing aromatic heterocyclic compounds such as 2,5-dimethylpyrazine or 2,4,6-trimethylpyridine and an aldehyde such as 1-dodecanal or ketone such as 5,7-dimethyl-3,5,9-decatrien-2-one in the presence of a suitable catalyst such as zinc chloride. These novel compositions are useful as oil and gas well corrosion inhibitors.

Abstract: New epoxy resins are prepared by reacting a hydroxybenzamide or derivative thereof with an epihalohydrin followed by dehydrohalogenation. These epoxy resins have crystalline melting points, self-cure at elevated temperatures and cure rapidly in the presence of the usual epoxy resin curing agents. Also disclosed are hydrolyzed products of these epoxy resins and subsequent reactions with polyisocyanates.

Abstract: New epoxy resins are prepared by reacting a hydroxybenzamide or derivative thereof with an epihalohydrin followed by dehydrohalogenation. These epoxy resins have crystalline melting points, self-cure at elevated temperatures and cure rapidly in the presence of the usual epoxy resin curing agents. Also disclosed are hydrolyzed products of these epoxy resins and subsequent reactions with polyisocyanates.

Abstract: New epoxy resins are prepared by reacting a hydroxybenzamide or derivative thereof with an epihalohydrin followed by dehydrohalogenation. These epoxy resins have crystalline melting points, self-cure at elevated temperatures and cure rapidly in the presence of the usual epoxy resin curing agents. Also disclosed are hydrolyzed products of these epoxy resins and subsequent reactions with polyisocyanates.

Abstract: Solid non-sintering epoxy resin products are prepared by reacting a trihydric phenol such as 1,1,1-tri(hydroxyphenyl)methane with an epihalohydrin such as epichlorohydrin in the presence of an alkali metal hydroxide such as sodium hydroxide. These epoxy resins are non-sintering solid resins useful in the preparation of electrical potting or molding compositions.

Abstract: Thermosettable prepolymers are prepared by reacting (1) an aromatic heterocyclic material having one or more rings and at least one nitrogen atom and at least two reactive substituent groups which have at least one reactive hydrogen atom attached to a carbon atom which is attached to a heterocyclic ring such as 2,3,5,6-tetramethylpyrazine or 2,4,6-trimethylpyridine, (2) a cycloaliphatic or aromatic carboxylic acid cyclic mono- or dianhydride such as pyromellitic dianhydride and (3) a material containing a polymerizable ethylenically unsaturated group and at least one group selected from (a) a heterocyclic material having one or more rings and at least one nitrogen atom and at least one substituent group which has at least one reactive hydrogen atom attached to a carbon atom which is attached to a heterocyclic ring such as 2-methyl-5-vinylpyridine, and (b) a cycloaliphatic or aromatic carboxylic acid cyclic monoanhydride or dianhydride such as cis-5-norbornene-endo-2,3-dicarboxylic anhydride.

Abstract: Thermosettable prepolymers are prepared by reacting (A) a heterocyclic material containing one or more rings and one nitrogen atom or a mixture of such materials wherein at least one of such materials contains at least two reactive substituent groups having at least one reactive hydrogen atom attached to a carbon atom which is attached to the ring such as 2,4,6-trimethyl pyridine; with (B) a cycloaliphatic or aromatic carboxylic acid mono- or dianhydride such as phthalic anhydride. These prepolymers or resins, can be homopolymerized without coreactants or copolymerized with N,N'-bis-imides such as 1,1'-(methylenedi-4,1-phenylene)-bismaleimide, to produce products, mat castings or composites having good mechanical and thermal properties.

Abstract: The thermal stability of epoxy resins prepared by dehydrohalogenating the reaction product of an epihalohydrin with an adduct prepared from a cyanuric halide and a polyhydric aromatic compound is improved by employing as the polyhydric aromatic compound one which is substituted with a hydrocarbyl group, a halogen atom or a nitro group at each ortho position relative to each aromatic hydroxyl group. These epoxy resins are useful in coating and molding compositions and in the preparation of laminates and composites.

Abstract: Hydroxyaromatic oligomers are prepared by (I) reacting (A) an aromatic hydroxyl-containing material such as bisphenol A with (B) a cyanogen halide such as cyanogen bromide in the presence of a base such as triethylamine and (II) co-oligomerizing the cyanate-containing product from (I) with (C) a polymaleimide such as the reaction product of maleic anhydride with methylenedianiline optionally in the presence of (D) a co-oligomerization catalyst such as cobalt naphthenate. These oligomers are useful in the preparation of epoxy resins.

Abstract: New epoxy resins result from dehydrohalogenation of the reaction product of an epihalohydrin such as epichlorohydrin with the reaction product of a trisphenol such as 1,1,1-tris(hydroxyphenyl)methane with dicyclopentadiene or an oligomer thereof. These new epoxy resins are useful in the electronics industry as encapsulants, potting compounds, laminates and the like.

Abstract: Vinyl ester resins are prepared by reacting a polyepoxide of a co-oligomerization product of a mixed cyanate of a polyphenol and a polymaleimide with a monounsaturated monocarboxylic acid.