Abstract: Novel hydroxy peroxides of the Structure AHO--R.sub.11 --X--OO--R (A)[wherein R--, --R.sub.11 -- and --X-- are as defined in the Summary of the Invention Section], having 10 hour half-life temperatures of 85.degree.-100.degree. C., the processes for their preparation, and the use of these novel compositions in curing of unsaturated polyester resins and in initiating polymerization of ethylenically unsaturated monomers.

Abstract: Novel hydroxy peroxides of the Structure AHO--R.sub.11 --X--OO--R (A)[wherein R--, --R.sub.11 -- and --X-- are as defined in the Summary of the Invention Section], having 10 hour half-life temperatures of 85.degree.-100.degree. C., the processes for their preparation, and the use of these novel compositions in curing of unsaturated polyester resins and in initiating polymerization of ethylenically unsaturated monomers.

Abstract: Curable compositions which are precursors for cured or partially cured light stabilized epoxy resins which are the product of the reaction of some or all of the epoxy groups of an epoxy resin with an N-(2,2,6,6-tetraalkyl-4-piperidinyl)amic acid hydrazide as well as the cured or partially cured reaction products thereof together with processes for their use and articles of manufacture produced thereby are disclosed.

Abstract: Novel hydroxy peroxides of the Structure AHO--R.sub.11 --X--OO--R (A)[wherein R--, --R.sub.11 -- and --X-- are as defined in the Summary of the Invention Section], having 10 hour half-life temperatures of 85.degree.-100.degree. C., the processes for their preparation, and the use of these novel compositions in curing of unsaturated polyester resins and in initiating polymerization of ethylenically unsaturated monomers.

Abstract: Curable compositions which are precursors for cured or partially cured light stabilized epoxy resins which are the product of the reaction of some or all of the epoxy groups of an epoxy resin with an N-(2,2,6,6-tetraalkyl-4-piperidinyl)amic acid hydrazide as well as the cured or partially cured reaction products thereof together with processes for their use and articles of manufacture produced thereby are disclosed.

Abstract: Stabilized polyurethanes, polyureas and polyurethane-polyurea polymers having hindered amine light stabilizers (HALS) bonded thereto by means of a hydrazide functionality attached to the HALS are provided. The synergistic effect of a second amide functional group in the HALS-hydrazide provides improved photostabilization efficiency as compared to HALS-hydrazides of the prior art.

Abstract: The present invention comprises reaction products resulting from the reaction of hydrazido-substituted or certain amino-substituted polymer stabilizers and cyclic dianhydrides, as well as the use of such products. The polymer stabilizers of the invention are useful for protecting a large variety of synthetic polymeric organic materials from the degradative effects of heat, light and oxygen. Some of the modifiers are flame retardants and many are metal deactivators in addition to their primary activity.

Abstract: The present invention relates to the novel monomers generically identified as bis(4-hydroxyphenyl thio)benzenes, to a process for their production and to their use in the preparation of polycarbonates, polyurethanes, polyesters, polysulfones and polyethers.

Abstract: The invention relates to an aromatic, high molecular weight thermoplastic copolycarbonate comprising the reaction product of a sulfur-free aromatic diphenol, a sulfur-containing diphenol, a branching agent and a carbonic acid derivative, characterized in having improved flame resistance. The invention further relates to a process for the preparation of said copolycarbonate.

Abstract: Polycarbonates are provided having improved critical thickness values based on an aromatic diphenol preferably bisphenol A and an aromatic diphenol thioether. By incorporating 2 up to 20 mole percent of the aromatic diphenol thioether based on the total diphenol content into the polymer, the critical thickness of the article molded from the polycarbonate is substantially improved.

Abstract: Polycarbonates are provided having improved critical thickness values and flame retardant characteristics based upon an aromatic diol and a halogenated thiodiphenol represented by the structural formula ##STR1## wherein X.sub.1 and X.sub.2 are halogen and "a"+"b"=1 to 8; Y.sub.1 and Y.sub.2 are alkyl groups having 1 to 4 carbon atoms; and "c"+"d"=0 to 7. By incorporating an effective amount of the aromatic halogenated thiodiphenol, based upon the total aromatic diol content, into the polymer the critical thickness and flame retardant characteristics of the polycarbonate are substantially improved, a process for the preparation of the monomer of said structural formula is likewise provided.

Abstract: The invention is directed to copolycarbonates of thiodiphenol characterized by high melt flow rate and good mechanical properties, particularly suitable for molding at temperatures lower than 500.degree. F.

Abstract: A copolycarbonate molding composition comprising the reaction product of an aromatic diphenol, a bis(4-hydroxyphenyl)biphenyl disulfone and a carbonate source is characterized by its high glass transition temperature. A blend thereof containing an organic acid salt is characterized by its improved flame retardance.

Abstract: Copolycarbonate resins are prepared from an aromatic diol and a carbonic acid derivative. 2,2-bis(p-hydroxy-phenyl) 1,1,1,3,3,3-hexafluoropropane is co-reacted in a minor amount with the aromatic diol and carbonic acid derivative to form a polycarbonate having improved heat distortion characteristics.

Abstract: Polycarbonate resins are based upon the reaction of an aromatic diol and a carbonic acid derivative. A sulfur containing difunctional phenolic compound represented by the structural formula: ##STR1## wherein R.sub.1 is a lower alkyl having 1 to 4 carbon atoms and "n" equals 0 to 4 and X is S or SO.sub.2 either totally or partially substitutes for said aromatic diol. Polycarbonates prepared in accordance with the invention exhibit good heat distortion characteristics and long term aging properties.

Abstract: The present invention relates to the novel monomers generically identified as bis(4-hydroxyphenyl sulfonylphenyl) biphenyl disulfones, to a process for their production and to their use in the preparation of polycarbonates, polyurethanes, polyesters, polysulfones and polyethers.

Abstract: The present invention pertains to a halogen-containing, copolycarbonate blend having improved critical thickness and flammability properties comprising an aromatic copolycarbonate comprising the reaction product of an aromatic diphenol, an aromatic thiodiphenol and a carbonic acid derivative, such as phosgene or carbonyl bromide, blended with an effective amount of a halogen-containing compound. In a preferred embodiment, the copolycarbonate blend also contains small amounts of a perfluoro sulfonic or carboxylic acid salt.

Abstract: Polycarbonates suitable for forming molded articles are comprised of a polycarbonate resin and 0.25 to 0.75 parts by weight per 100 parts of polycarbonate of an ethylene-vinylacetate copolymer. The articles molded from the polycarbonate resin with the ethylene-vinylacetate copolymer therein exhibit improved stress crack resistance.

Abstract: A glass-fiber reinforced aromatic polycarbonate is provided with improved ductility and improved mold release properties which is comprised of an aromatic polycarbonate resin, glass-fibers and an ester wax of montanic acid.

Abstract: Poly(alkylene terephthalates) are stabilized during high temperature processing by neutral esters of phosphorous acid having at least one oxetane group. The stabilized poly(alkylene terephthalates) are resistant to molecular weight degradation and discoloration during melt processing of the polymer when the polymer is being extruded and formed into molded articles.