Abstract: Secondary amine-terminated aromatic oligomers are prepared by conventional reactions for the formation of such polymers as polyimides, polyethersulfones and polyetherketones, using such compounds as methylamino or phenylamino anilines or phenols as endcapping agents. The secondary amine-terminated oligomers may be reacted with cyclic polycarbonate oligomers to prepare copolyurethanecarbonates which are useful as engineering thermoplastics.

Abstract: The invention is a process for modifying and increasing the molecular weight of a poly(alkylene carbonate) polyahl, which comprises contacting the poly(alkylene carbonate) polyahl, with at least one modifier having a plurality of moieties that are reactive with the carbonate and/or acting hydrogen moieties of the poly(alkylene carbonate) polyahl at elevated temperatures and at a pressure at which at least one compound other than a monoalkylene glycol which compound is at least as volatile as a tetraethylene glycol is removed in the gaseous state from the poly(alkylene carbonate) polyahl.

Abstract: A process for modifying a poly(alkylene carbonate) polyahl, which comprises reacting the poly(alkylene carbonate) polyahl, with at least one modifier having at least one active hydrogen moiety or cyclic anhydride, optionally in the presence of a catalyst under transesterification conditions to form a modified poly(alkylene carbonate) polyahl wherein the modifier is chemically bonded to the backbone of the poly(alkylene carbonate) polyahl.

Abstract: A process for the addition of pendant groups to polyarylenes comprises the steps of charging a reaction vessel with a solution of a polyarylene and a Friedel-Crafts catalyst; said polyarylene having the formula ##STR1## adding to the reaction vessel a pendant forming group G, wherein G is selected from the group consisting of sulfonyl halides, sulfonamide halides, alkylhalides, acylhalides and phosphorus acid halides; heating the contents of the reaction vessel to form a substituted polyarylene having the formula ##STR2## and thereafter recovering the substituted polyarylene. The substituted polyarylenes are novel and have utility as a semipermeable membrane and a process for the separation of gases therewith is also provided.

Abstract: A process for the addition of pendant groups to polyarylenes comprises the steps of charging a reaction vessel with a solution of a polyarylene and a Friedel-Crafts catalysts; said polyarylene having the formula ##STR1## adding to the reaction vessel a pendant forming group G, wherein G is selected from the group consisting of sulfonyl halides, sulfonamide halides, alkylhalides, acylhalides and phosphorus acid halides; heating the contents of the reaction vessel to form a substituted polyarylene having the formula ##STR2## and thereafter recovering the substituted polyarylene. The substituted polyarylenes are novel and have utility as a semipermeable membrane and a process for the separation of gases therewith is also provided.

Abstract: Compositions comprising polyester or polycarbonate having reacted therein a total of from about 1.0 to about 5,000 parts by weight per million parts by weight of polyester of at least one UV absorbing compound of the formula ##STR1## wherein R is alkyl or the like, X is carbonyl or sulfonyl, R.sup.1 is hydrogen or a substituent, and Y and Z are hydrogen or substituents such as cyano or alkoxycarbonyl, with the provision that at least one of R, R.sup.1, Y, and Z is, or forms part of, or contains one or more reactive groups capable of undergoing a condensation reaction under polyester forming conditions, such that the UV absorbing compound is reacted into the polymer. The compound has a maximum light absorbance within the range of from about 320 nm to about 380 nm, which is nonextractable from the polyester and stable under the polyester processing conditions, for imparting UV screening properties to the polymer.

Abstract: The present invention relates to 2,3,2',3'-bis-morpholine derivatives corresponding to the formula ##STR1## The present invention also relates to a process for the preparation of these derivatives and to their use as hydrolysis protective agents for synthetic polymers containing ester groups and/or carbonate groups. Preferred synthetic polymers are polyurethanes.

Abstract: Polymerizable solutions of mixtures containing a bicyclic amide acetal, a polymer which does not react with the bicyclic amide acetal and a monomer or polymer capable of undergoing condensation polymerization with the bicyclic amide acetal, a process for polymerization of such solutions and the novel polymers resulting from the polymerization are described.

Abstract: A process for the addition of pendant groups to polyarylenes comprises the steps of charging a reaction vessel with a solution of a polyarylene and a Friedel-Crafts catalysts; said polyarylene having the formula ##STR1## adding to the reaction vessel a pendant forming group G, wherein G is selected from the group consisting of sulfonyl halides, sulfonamide halides, alkylhalides, acylhalides and phosphorus acid halides; heating the contents of the reaction vessel to form a substituted polyarylene having the formula ##STR2## and thereafter recovering the substituted polyarylene. The substituted polyarylenes are novel and have utility as a semipermeable membrane and a process for the separation of gases therewith is also provided.

Abstract: This invention relates to moldable polycarbonate compositions and in particular to moldable polycarbonates which have ordered alternating repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl)sulfone (TMBS) and 2,2-bis-(4-hydroxyphenyl)propane (Bisphenol A) dihaloformate, or ordered, alternating repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl) sulfone (TMBS) dihaloformate and a bisphenol compound such as 2,2-bis-(4-hydroxyphenyl)propane (Bisphenol A). Such polycarbonates exhibit improved hydrolytic stability and also excellent processability in molding applications.

Abstract: The present invention relates to a process for the preparation of urea condensates and to their use.To prepare these urea condensates, a primary di and/or polyamine is reacted with urea, a secondary monoamine and if appropriate a polyalcohol at elevated temperatures in the presence or absence of catalysts, and the ammonia formed is separated off.These urea condensates are suitable as binder components in thermosetting surface coatings.

Abstract: Polycondensation compounds containing piperidine and triazine groups, having a mean molecular weight from 1000 to 20,000 and constituted by structural units a and b of the formula ##STR1## are suitable as anti-actinic stabilizers for incorporation in polymeric materials.

Abstract: A composition based on aliphatic polycarbonates containing urethan groups and acrylic or metacrylic end groups, to be cross-linked in the presence of radicalic initiators for their functionalization with acrylic or metacrylic groups of a mixture composed of diols, polyols and their oligomeric derivatives terminated by OH groups and containing in their molecule carbonate groups and urethan groups.

Abstract: A resinous composition for coating use comprising a resin obtained by the reaction of base resin having as essential groups, both carboxyl groups derived from a polycarboxylic acid whose titration midpoint potential in non-aqueous potentiometric titration is more than -300 mV in a state capable of developing a resinous acid value and a functional group reactive with a crosslinking agent, and an alkyleneimine compound in an amount equivalent to resinous acid value of 0.01 to 50, the resinous acid value based on said polycarboxylic acid in the final composition being 2 to 50.This is useful for the preparation of a coating composition having improved curing property, storage stability and time color stability.

Abstract: Blends of carbonate polymer, such as a polycarbonate of bisphenol-A, and a rubber-modified copolymer, such as an acrylonitrile/butadiene/styrene (ABS) resin prepared by mass, bulk or mass suspension polymerization techniques, or by agglomerating particles prepared by emulsion polymerization techniques, exhibit good physical properties and a low gloss finish. Such blends are particularly useful in the manufacture of molded parts. Such blends are color stable and exhibit small amounts of yellowing.

Abstract: The present invention is directed to thermoplastic molding compositions which comprise a blend containing a thermoplastic polyester, a polycarbonate resin and an impact modifier and an amount of a blocked polyisocyanate prepolymer sufficient to improve the impact resistance and gasoline resistance of said blend.

Abstract: Polymeric carbonate diols are prepared by coupling segments of copolyether glycols with a dialkyl carbonate, with a cyclic carbonate, or with phosgene.The carbonate diols are useful in preparing polyurethanes.

Abstract: Polyether carbonate diols are prepared by coupling segments of a poly(tetramethylene ether) glycol with a dialkyl carbonate, a cyclic carbonate or with phosgene. The carbonate diols are useful in preparing polyurethanes.

Abstract: A process for producing polycarbonate is described, comprising reacting a chloroformate group-containing polycarbonate oligomer with an aqueous alkaline solution of a compound containing at least three functional groups and, thereafter, interfacial polycondensing the above-obtained reaction product with an aqueous alkaline solution of a dihydric phenol compound. The thus-produced polycarbonate has good melt characteristics compared with conventional polycarbonates, and the dependence of melt viscosity on a rate of shear is large. Thus, the polycarbonate of the invention is suitable for extrusion molding, particularly for blow molding using an extrusion molding machine, and can provide good quality sheets or molds.

Abstract: Waste or surplus polycarbonates are salvaged by reacting them with a hydroxy amine in an amount sufficient to cleave about 85% or more of the carbonate groups, thereby converting the polymer to a mixture of dihydroxy monomers--including novel dihydroxy carbamates--which may be converted to useful polymers by reaction with other difunctional monomers having at least one hydroxy-reactive functional group per molecule.

Abstract: Anionic copolymers of lactams and aliphatic polycarbonates having urethane and carboxylic acid ester groups, preferably having recurring structural units of the formula:--NH--CO--O--Y--O--CO--(CR.sub.2).sub.n --whereinR represents hydrogen or C.sub.1 -C.sub.4 -alkyl;n represents an integer of from 2 to 13;Y represents the residue of an alcohol of the following formula:HO--X--OH,whereinX represents an open-chain, cyclic or mixed open-chain-cyclic alkylene radical having from 2 to 12 carbon atoms which is optionally substituted by C.sub.1 -C.sub.4 -alkyl and optionally interrupted by from 1 to 3 oxygen atoms, or a polyethylene glycol having a molecular weight up to 10,000 or an alkoxylation product of bifunctional phenols.

Abstract: A curable resin composition comprising a mixture and/or a preliminary reaction product of (a) at least one cyanate compound selected from the group consisting of polyfunctional cyanate esters, prepolymers of said cyanate esters, coprepolymers of said cyanate esters and an amine and mixtures thereof, (b) at least one polyisocyanate compound selected from the group consisting of polyisocyanates, prepolymers of said polyisocyanates, coprepolymer of said polyisocyanates and an acid anhydride and mixtures thereof and (c) at least one maleimide compound selected from the group consisting of polyfunctional maleimides, prepolymer of said maleimides, coprepolymers of said maleimides and an amine and mixtures thereof is disclosed.

Abstract: Acrylated urethane polycarbonate compositions are formed from the reaction of a polycarbonate polyol, a polyisocyanate and a hydroxy-containing acrylate monomer. These compositions are useful as components of improved radiation-curable compositions.

Abstract: This invention relates to cross-linkable film-forming compositions which contain a polymer with pendant isocyano groups and a nickel oligomerization catalyst and to the use of the compositions in ambient temperature-cure finishes.

Abstract: Compounds having a melting point above 40.degree. C. which compounds contain uretone imine groups and which are substantially free from volatile isocyanate blocking agents which are split off under stoving conditions are excellent crosslinking agents for pulverulent coating compositions based on hydroxyl groups-containing polymers.

Abstract: The present invention relates to a process for preparation of molding resins comprising heating and kneading an isocyanate prepolymer derived from a hydroxyl-terminated polymer and a polyfunctional isocyanate with a hydroxyl-terminated low-molecular-weight polybutylene terephthalate in the presence of reinforcing filler by means of an extruder.