Abstract: A process for making polyetherimides involving reacting an aromatic bis(ether anhydride) with an organic diamine in the presence of a solvent so as to form a polyamide acid. The polyamide acid is thereafter polymerized in a solid state at a temperature below the glass transition temperature of the final polyetherimide.

Abstract: High molecular weight thermoplastic aromatic carbonate resin exhibiting improved impact properties comprised of the polymerized reaction products of:(i) at least one dihydric phenol;(ii) a carbonate precursor; and(iii) an amount effective to improve the impact properties of said resin of at least one polymer represented by the formula ##STR1## wherein A represents a divalent residue of at least one polymerized and partially hydrogenated conjugated alkadiene monomer and has a weight average molecular weight of at least about 600, and X is independently selected from halogen radicals.

Abstract: A copolymer prepared from a bis-(N-alkyphthalimide), a dianhydride and a diamine, and a process of preparing the copolymer by reacting a bis-(n-alkyphthalimide) with an alkali to form a tetracid, dehydrating the tetracid to a dianhydride and reacting the dianhydride with a diamine under copolymer forming conditions.

Abstract: Block copolymers of the general formula --polycarbonate--G--polyether glycol-- wherein G is an ester aromatic carbonate and/or an ester-ester linkage, substantially free of aliphatic ether linkages are thermally stable in comparison with prior art block copolymers. They form compatible blends with a number of other thermoplastic resins to produce molded articles with improved resiliency. The block copolymers are produced from novel terminally functional end capped polyalkylene glycols.

Abstract: Novel block copolymers containing polyetherimide and polycarbonate segments are prepared from hydroxy terminated polyetherimide oligomers, a dihydric phenol and phosgene or a phosgene precursor. The segmented block copolymers exhibit improved toughness and are useful as engineering thermoplastics, alone, or in combination with other resins.

Abstract: A thermoplastic composition includes compatible blends of a mixed polycarbonate comprising units derived from a first dihydric phenol, which is a bis(hydroxyaryl) sulfone, a second dihydric phenol; and one or more thermoplastic condensation polymers containing hetero groups.

Abstract: A thermoplastic composition includes compatible blends of a mixed polycarbonate comprising units derived from a first dihydric phenol, which is a bis(hydroxyaryl) sulfone, a second dihydric phenol; and one or more thermoplastic condensation polymers containing hetero groups.

Abstract: High molecular weight aromatic carbonate resin comprised of the polymerized reaction products of:(i) at least one dihydric phenol;(ii) a carbonate precursor; and(iii) an amount at least effective to improve the impact properties of said resin of at least one polymer selected from polymers represented by the formula ##STR1## thereof; wherein A is selected from the divalent residues of at least one polymerized and fully hydrogenated conjugated alkadiene and has a weight average molecular weight of at least about 600, and X is independently selected from halogen radicals.At lower amounts of (iii) these resins exhibit improved impact properties, while at higher amounts of (iii) the resins exhibit rubbery and elastomeric characteristics.

Abstract: Compounds which are bis-(N-alkylphthalimides) are prepared by a new process in which a halogen-containing precursor is heated in the presence of a nickel compound, a reducing agent, for example, metallic zinc, and an organic solvent. The resulting compound is useful in a process for the preparation of a copolymer, in which the compound is reacted with alkali to form a tetraacid, the acid is dehydrated to form a dianhydride, and the dianhydride is reacted with a second dianhydride and a diamine under copolymer-forming conditions.

Abstract: Novel fluoro-containing polyetherimides are prepared from bis ether dianhydrides, fluoro-containing dianhydrides, and organic diamines. The compolymers exhibit both increased Tg and increased solubility in halogenated solvents which enhances their value in a wide variety of uses including films, molding compounds, and coatings.

Abstract: Polyetherimide oligomers are end functionalized with aryl hydroxy groups by reacting mixtures of bisphenol-A dianhydride, arylene diamines and aryl aminoalcohols. The oligomers are reactive with other polymer precursors, such as bisphenol-A and phosgene to provide segmented block copolymers of improved toughness and compatibility with other resins.

Abstract: A thermoplastic composition includes compatible blends of a mixed polycarbonate comprising units derived from a first dihydric phenol, which is a bis(hydroxyaryl) sulfone, a second dihydric phenol; and one or more thermoplastic polymers containing hetero groups.

Abstract: Novel di(phthalic anhydride) derivatives of di(dialkylphenol) sulfones of the following formula are disclosed: ##STR1## These dianhydrides can be reacted with organic diamines to form novel polyetherimide polymers having particularly beneficial properties.

Abstract: Novel di(phthalic anhydride) derivatives of di(dialkylphenol) sulfones of the following formula are disclosed: ##STR1## These dianhydrides can be reacted with organic diamines to form novel polyetherimide polymers having particularly beneficial properties.

Abstract: A thermoplastic composition includes compatible blends of a mixed polycarbonate comprising units derived from a first dihydric phenol, which is a bis(hydroxyaryl) sulfone, a second dihydric phenol; and one or more thermoplastic polymers containing hetero groups.

Abstract: A thermoplastic composition includes compatible blends of a mixed polycarbonate comprising units derived from a first dihydric phenol, which is a bis(hydroxyaryl) sulfone, a second dihydric phenol; and one or more thermoplastic condensation polymers containing hetero groups.

Abstract: Compositions of an aromatic polycarbonate, a polysulfone carbonate and a filler are disclosed which have good electrical properties, high modulus and molten solder resistance.

Abstract: Thermoplastic compositions which are a solution of polycarbonate and poly(ethylene terephthalate) resins are described. These solutions are produced by melt admixture of a polycarbonate prepared from bis(3,5,dimethyl-4-hydroxy phenyl) sulfone and 2,2-bis(4-hydroxy-phenyl) propane and polyethylene terephthalate) to provide the composition with a single glass transition point.

Abstract: Purified bis(3,5-dialkyl-4-hydroxyphenyl) sulfone useful for production of improved carbonate polymer is described. This sulfone is precipitated by deammoniation of an aqueous solution and then removed from the supernatant solution. This produces a product having minimal phenol sulfonic impurities. It may be employed to form carbonate polymer having improved physical properties.

Abstract: This invention is directed to a curable molding composition which comprises a mixture of (a) one or more fibers with a melting point or a glass transition temperature above about 130.degree. C., (b) a poly(acrylate) characterized by the following empirical formula: ##STR1## wherein R is the hydroxy-free residue of an organic polyhydric alcohol which contained alcoholic hydroxyl groups bonded to different carbon atoms, R.sub.1 and R.sub.2 are independently hydrogen or methyl, n is 1 to 3 (c) an ethylenically unsaturated monomer which is soluble in and copolymerizable with (b), and (d) an elevated temperature free-radical curing catalyst capable of affecting the co-reaction of (b) with (c), said mixture containing (i) from about 15 to about 80 weight percent of (a), (ii) from about 5 to about 60 weight percent of (b), and (iii) from about 5 to about 60 weight percent of (c), and (iv) from about 0.2 to about 3 weight percent of (d), and wherein (b) plus (c) has a viscosity of from about 1 to about 50 centipoise.