Abstract: Copolymers of BPA, BPT-1 and BPT-2, can be used as a modifier to enhance the thermal properties of a BPA polymer. A single copolymer modifier can be used in differing amounts to produce a product with desired thermal properties. Thus, polycarbonate can be made by combining a bisphenol A polycarbonate and a BPA/BPT-1/BPT-2 copolymer modifier, and mixing the combined materials to form a blend. By adjusting the relative amounts and the properties of the bisphenol A polycarbonate and BPA/BPT-1/BPT-2 copolymer, the glass transition temperature and the toughness of the blend can be selected. Suitable BPA/BPT-1/BPT-2 copolymers contain BPT-1 and BPT-2 in a ratio, BPT-1/BPT-2, in the range of 70/30 to 10/90, preferably less than or equal to 50/50, for example around 30/70.

Abstract: A poly(carbonate-co-ester) block copolymer is synthesized using synthetic strategies that can be incorporated into conventional melt facilities that are commonly used in the production of polycarbonate polymers. The polycarbonate block of the poly(carbonate-co-ester) copolymer is derived from a polycarbonate reaction mixture comprising an aromatic dihydroxy compound and a carbonic acid diester, such as bisphenol A and diphenyl carbonate, respectively. The second block of the copolymer is derived from a polyester prepolymer, the polyester prepolymer comprising a diol, diacid or diester, and at least one monomer that is selected to advantageously incorporate desired properties into the poly(carbonate-co-ester) copolymer. The polyester prepolymer is introduced to the polycarbonate reaction mixture to form the poly(carbonate-co-ester) copolymer. Properties of the copolymer can be altered by varying numerous conditions of the reaction.

Abstract: A curable resin composition including a poly(arylene ether), an allylic monomer, and an acryloyl monomer may be formulated as a powder. The resin composition exhibits improved toughness, and it is useful in thermoset processing applications where use of powdered resins is preferred.

Abstract: Disclosed is a low birefringence solvent cast film of optical quality comprising a blend of a cycloaliphatic polyester and a polycarbonate and method of preparing the film by casting a solvent containing dissolved cycloaliphatic polyester and a polycarbonate onto a support and evaporating the solvent to form a film.

Abstract: This invention relates to a gel-free process for making functionalized polymers. When multi-alkali metal initiators are used to make these polymers anionically, the process comprises anionically polymerizing at least one monomer with a multi-alkali metal initiator in a hydrocarbon solvent, capping the polymer by adding to the polymer a capping agent that reacts with the ends of the polymer chains such that strongly associating chain ends are formed wherein a strongly associating gel is formed, and, finally, adding a trialkyl aluminum compound to the gel. The important characteristic of the capping agent herein is that it will cap the living polymer and will add a functional group to the polymer chain end which will be strongly associating in the hydrocarbon solvent.

Abstract: Polymer having repeating polycarbonate moieties of the formula (I) (Acr)y(A)(Q)(PC)[(Q)(PC)]x(Q)(A)(Acr)y  (I) wherein (Acr)y(A) is the residue of hydroxyalkyl acrylate or hydroxyalkyl methacrylate having an alkyl moiety, A, and where said alkyl, A, has 2 to 5 carbon atoms and wherein Acr is an acrylate or methacrylate moiety; Q is the residue of one or more organic polyisocyantes which are connected with A via a urethane linkage; PC is the residue of an alkylene diol polycarbonate of the formula (II) HO(ROCOO)nROH  (II) R is one or more (C2 to C10) alkylene or one or more (C6 to C12) aromatic group; y is an integer from 1 to 5; x is from 1 to 20; PC and Q are connected via a urethane group. The acrylate terminate polymers are useful for radiation cured coatings which have superior adhesion and reverse impact strength, especially when applied to plastic substrates.

Abstract: The object of the present invention is to provide a flame-retardant resin composition which has a high heat resistance, superior impact resistance and superior flame-retarding properties. The present invention provides a flame-retardant resin composition which is characterized by the fact that said composition contains (A) a polycarbonate type resin, (B) a silicone resin constructed from siloxane units expressed by the formula RSiO1.5 (T units) and siloxane units expressed by the formula R3SiO0.5 (M units), or a silicone resin constructed from T units, M units and siloxane units expressed by the formula SiO2.0 (Q units) (R indicates an unsubstituted or substituted monovalent hydrocarbon group with 1 to 10 carbon atoms), and (C) an anti-drip agent, and the aforementioned composition contains 0.1 to 9 parts by weight of the abovementioned silicone resin (B), and 0.01 to 10 parts by weight of the abovementioned anti-drip agent, per 100 parts by weight of the abovementioned polycarbonate resin (A).

Abstract: A curable composition, which can be easily decomposed and removed by means of a mixed solution of acid, water, and optionally an organic solvent, is provided. The curable composition contains a resin (A) having a structure of structural formula represented by formula (1) and crosslinkable functional group(s) in one molecule.

Abstract: Disclosed is a modified acrylic coating composition cured with melamine characterized by improved impact resistance which comprises: An acrylic polyol dissolved in a suitable solvent to 40-90% solids; 2 to 50% by weight of said acrylic polyol substituted with a polytrimethylene carbonate polyol selected from a polytrimethylene carbonate diol, a polytrimethylene carbonate triol, or a higher functionality polytrimethylene carbonate polyol; a melamine crosslinking agent; optionally a catalyst; and optionally pigments and other additives commonly used in coatings. Also disclosed in a related embodiment is a melamine/urea formaldehyde polytrimethylene carbonate coating composition that is prepared without acrylic.

Abstract: A method for producing a high-quality thermoplastic branched polycarbonate which is used in blow-molding, extrusion or vacuum molding from a linear aromatic polycarbonate efficiently. The thermoplastic branched polycarbonate is produced by melt-mixing and reacting a substantially linear aromatic polycarbonate with an acid anhydride having at least two cyclic acid anhydride groups in a molecule in the presence of a basic catalyst.

Abstract: Degradable polyacetal polymers and functionalized degradable polyacetal polymers have properties favorable for use in pharmaceutical and biomedical applications. The degradable polyacetal polymers are relatively stable at physiological pH with favorable biodistribution profiles, and degrade readily in low pH conditions. Conjugates of the polymers with drugs, especially anticancer drugs, and methods of treatment of cancer.

Abstract: Novel spiropyran compounds, particularly with photochromic properties, are disclosed, as well as photochromic compositions and ophthalmic articles containing said compounds. The photochromes have been designed so as to have a high colorability, a high sensitivity to activating radiation breaking the pyran ring, to be entirely or practically free from coloration in a non activated non exposed state, to have an intense coloration following activation and a high coverage of the visible spectrum in combination with at least one other photochrome, and to have high rates of coloration/decoloration. The spiropyrans are easily produced and photochemically stable, and are, e.g., of formula (i), wherein L=(a); (b).

Abstract: A flame retardant organic resin composition comprising

Abstract: A nonaqueous sizing for glass fibers useful for reinforcement of polymers. The sizing composition comprises one or more film formers miscible with the polymer to be reinforced, one or more coupling agents and one or more powders. The sizing composition of the invention provides a glass fiber which has improved processability and notched izod without any loss in dispersability characteristics of the glass pellets.

Abstract: Copolymers of polycarbonates or polyarylates with polyether polymers such as polyethersulfones, polyetherketones, and polyetherimides are prepared by reaction of the polyether polymer-forming reagents, e.g., bisphenol A disodium salt and bis(4-chlorophenyl)sulfone, in the presence of the polycarbonate or polyarylate. The reaction may take place in a dipolar aprotic solvent, or in a water-immiscible aromatic solvent in the presence of a phase transfer catalyst, preferably a hexaalkylguanidinium halide. Hydroxy-terminated polyether oligomers may be produced from the copolymers by saponification of carbonate or ester groups.

Abstract: The present invention discloses a resin composition reclaimed from compact disk waste having improved mechanical characteristics. The resin composition in accordance with the present invention comprises (a) compact disk waste comprising polycarbonate (PC) as a primary component; and (b) a coupling agent containing two or more reactive functional groups. Optionally, the resin composition of the present invention may further comprise (c) an impact-resistant thermoplastic resin, engineering plastic grade PC or waste thereof, or recycled bottle grade PC.

Abstract: A lactone chain-extended polyester polyol of the present invention comprises the reaction product of a lactone and a previously chain-extended phenolic-based hydroxyl compound. The previously chain-extended phenolic-based hydroxyl compound may comprise the reaction product of (i) a lactone or an alkoxylating agent selected from the group consisting of alkylene oxides and alkylene carbonates, and (ii) a phenolic aralkylation polymer comprising the reaction product of a phenolic monomer having at least two free reactive positions; a styrene derivative; and a coupling agent. The previously chain-extended phenolic-based hydroxyl compound also may be chain-extended by reacting with a lactam to produce a lactam chain-extended polyester polyamide. The polyols and polyamides of the present invention provide unique combinations of hard and soft functionalities, which translates into materials exhibiting a unique combination of toughness and hardness.

Abstract: Resinous compositions, especially synthetic resins and most especially arylate polymers, contain 2,3-dicyano-1,4-diaminoanthraquinone as a blue dye. Said compositions are characterized by improved weatherability in comparison with compositions containing other blue dyes.

Abstract: A lactone chain-extended polyester polyol of the present invention comprises the reaction product of a lactone and a previously chain-extended phenolic-based hydroxyl compound. The previously chain-extended phenolic-based hydroxyl compound may comprise the reaction product of (i) a lactone or an alkoxylating agent selected from the group consisting of alkylene oxides and alkylene carbonates, and (ii) a phenolic aralkylation polymer comprising the reaction product of a phenolic monomer having at least two free reactive positions; a styrene derivative; and a coupling agent. The previously chain-extended phenolic-based hydroxyl compound also may be chain-extended by reacting with a lactam to produce a lactam chain-extended polyester polyamide. The polyols and polyamides of the present invention provide unique combinations of hard and soft functionalities, which translates into materials exhibiting a unique combination of toughness and hardness.

Abstract: A thermoplastic resin composition in which 5 to 45 parts by weight of carbon fiber and 0.1 to 10 parts by weight of conductive carbon black are compounded per 100 parts by weight of resin components comprising an aromatic polycarbonate resin and an aromatic polysulfone resin. The thermoplastic resin composition is excellent in heat-resistance and mechanical strength, and heat-resistant IC trays therefrom are useful products which can endure drying of IC at high temperature and are excellent in handling properties.

Abstract: Phenolic resin polyols are disclosed. The polyols, which contain aliphatic or mixed phenolic and aliphatic hydroxyl groups, are the reaction products of aralkylated phenols or phenol aralkylation polymers with an oxyalkylating agent selected from alkylene oxides and alkylene carbonates. The phenolic resin polyols are versatile intermediates for many polymer systems, including urethanes, epoxies, alkyds, acrylates, and polyesters.

Abstract: Polymeric structure involving a first polymer having a linear segment and a second polymer having a macrocyle which is threaded onto said linear segment to form a rotaxane complex. The rotaxane complex is capable of reversibly dissociating back into the individual polymers under the influence of an external factor, such as temperature and/or solvent exposure.

Abstract: The present invention relates to the use of a polycarboxylate polymer in a hypochlorite bleach containing composition to reduce bleach malodour from the contacting of said composition with skin surfaces.

Abstract: There is a provided a method to produce a polymer composite material in which the rigid polymer (R.sub.m).sup.n is dispersed uniformly at the molecular level in the flexible polymer (M), preferably by both polymerization with no solvent in the molten and mixed state and subsequent polymerization in the solid state. According to the preferred embodiment of the present invention, the polymer composite material is produced by polymerization with no solvent in the molten and mixed state. In the case that the rigid polymer is polymerized from the monomer having a slow polymerization rate, in order to prevent roughness of the rigid polymer during polymerization, the polymerization in the molten state is stopped at the polymerization degree equal to that of an oligomer and the resulting composite is subsequently polymerized in the solid state to increase the polymerization degree of the rigid polymer.

Abstract: Polycarbonates are recycled without the need for chemical modification by dissolution in a solvent followed by removal of any insoluble materials and precipitation by addition of a non-solvent. The precipitation step may be followed by solid state polymerization of the recycled polycarbonate. Particularly when solid state polymerization is to be performed, the use of a combination of solvent and non-solvent which produces a crystalline intermediate is performed, and use of a modifying reagent increasing the hydroxy end group concentration of the polycarbonate may be advantageous.

Abstract: A nonaqueous sizing for glass fibers useful for reinforcement of polymers. The sizing composition comprises one or more film formers miscible with the polymer to be reinforced and one or more coupling agents. The sizing composition of the invention provides a glass fiber which may be wirecoated with the polymer to be reinforced, eliminating the need for extrusion or pultrusion processing to make glass/polymer composite fibers, compound or pellets.

Abstract: The invention relates to block copolymers of general formula (I)--?--O--CO--O--A--O--CO--O--B--!.sub.a -- (I)where a is an integer between 2 and 300 inclusive;A and B, which may be the same or different, are blocks which can be obtained by reaction between a bis(chloroformate) of oligomeric poly(caprolactone) and a polyester residue of formula (II)HO--?--R.sub.1 --CO--O!.sub.x --?--R.sub.2 --CO--O--!.sub.y --H (II)where R.sub.1 and R.sub.2, which may be the same or different, are each an aliphatic hydrocarbon residue with a linear or branched chain having from 1 to 4 carbon atoms; x and y are integers from 1 to 50, in any possible ratio from 0 to 1;the groups --R.sub.1 --COO-- and --R.sub.2 --COO-- being randomly distributed in the polyester residue.

Abstract: An aromatic polycarbonate composition having less than 400 parts per billion each of ionic impurities, particularly sulfate, chloride and fluoride ions prepared by devolatilizing the ionic impurities from a polycarbonate composition employing an aqueous medium of about 1% by weight based on the weight of the polycarbonate composition. Preferably the devolatilizing is carried out in an extruder during compounding the polycarbonate composition and preferably under a vacuum. Also, the extruded strands of polycarbonate resin are quenched in a deionized water bath.

Abstract: A thermoplastic resin composition comprising a thermoplastic resin (A) and a thermoplastic polymer (B) having a glass transition temperature within the range of from -20.degree. C. to 70.degree. C. which are melt-blended in a proportion (A)/(B) of from 95/5 to 20/80 in weight ratio. The composition, upon application of an external stress in a temperature region of from a temperature about the glass transition temperature of the thermoplastic polymer (B) to the melting point thereof, is transformable to any shape that conforms to that stress, and is capable of becoming fixed to the transformed shape in a temperature region lower than the glass transition temperature.The composition can be used to provide a temperature-dependent shape-transformable/fixable product formed of the above composition.

Abstract: Redistribution of polycarbonate compositions is effected in the presence of a tetraorganophosphonium hydroxide as catalyst and a catalyst decomposing amount of a polyhydroxyaliphatic compound such as glyceryl monostearate, pentaerythritol or ethylene glycol. Catalyst decomposition after redistribution improves the stability of the redistributed polycarbonate composition.

Abstract: The invention relates to the use of absorbable physiologically acceptable sheets of copolymers for preventing postoperative adhesions after surgical procedures and is characterized in that the sheets consist of racemic lactide and .epsilon.-caprolactone, .sigma.-valerolactone, .tau.-decalactone or .beta.-hydroxybutyric acid, prepared by reacting the monomers in the molar ratio of lactide to partner in the reaction of from 90 to 70 30 to 10 with the addition of metal carboxylates which are known per se as initiator, with a ratio of partner in the reaction to initiator of from 300:1 to more than 1000:1 at temperatures of 130.degree.-150.degree. C. over a period of 24 to 96 hours.

Abstract: Polymer mixtures which comprise at least one thermoplastic and at least one oxidized polyarylene sulfide show particularly good tribological behaviour. The thermoplastics of the mixture are, for example, polyacetal, polyester, liquid-crystalline polymer, polyaryl ether ketone, polysulfone, polyether sulfone, polyphenylene sulfide or polyether imide. The oxidized polyarylene sulfide is preferably polyphenylene sulfone. The polymer mixtures are used for producing gear wheels, gear racks, bearings, chains, pulleys, rollers, wheels or gasket materials.

Abstract: The mold release performance of pentaerythritol esters is enhanced in polycarbonate resin moldings by partial replacement with an ester of dipentaerythritol.

Abstract: Disclosed is a curable resin composition which can be applied for various uses such as top-coating compositions for cars, coating compositions for exterior walls of constructions, heat-resistant coating compositions, adhesives, ink compositions, compositions to be infiltrated into fibers and paper, and surface-treating compositions. The composition comprises (A) a resin obtained by condensation of a polymer having both a hydrolyzable silyl group and a particular functional group except such a hydrolyzable silyl group, and a particular polysiloxane, and (B) a compound capable of reacting with the functional group existing in the resin (A).

Abstract: A thermoplastic resin composition comprising 100 parts by weight of a thermoplastic resin and 2 to 12 parts by weight of a thermoplastic resin oligomer containing 0.1 to 35% by weight of an aliphatic unsaturated group is molded with silicone rubber to form an integrally molded part. The thermoplastic resin composition maintains the inherent properties of the thermoplastic resin and firmly bonds with silicone rubber.

Abstract: A preparation process of polyhydroxycarboxylic acid comprising conducting dehydration polycondensation of hydroxycarboxylic acid or an oligomer of the same in a reaction mixture containing said hydroxycarboxylic acid or the oligomer of the same and an organic solvent substantially in the absence of water to give polyhydroxycarboxylic acid having an weight average molecular weight of 50,000 or more, successively mixing the reaction mixture containing said polyhydroxycarboxylic acid with at least one binder selected from the group consisting of (1) polyisocyanate compound, (2) polybasic acid anhydride, (3) cyclic imino ester, (4) cyclic imino ether, (5) aromatic hydroxycarboxylic acid, (6) polyamino compound, (7) polyhydric alcohol, (8) epoxy compound, (9) polyfunctional aziridine compound, (10) lactam, (11) lactone, and (12) diethylene glycol bischloroforate, and reacting to obtain polyhydroxycarboxylic acid having a weight average molecular weight of 100,000 or more the polyhydroxycarboxylic acid which is obt

Abstract: Rigid-rod and segmented rigid-rod polymers, methods for preparing the polymers and useful articles incorporating the polymers are provided. The polymers incorporate rigid-rod backbones with pendant solubilizing groups attached thereto for rendering the polymers soluble.

Abstract: A bioabsorbable, ternary block copolymer consisting essentially of (A) polylactic acid segment, (B) poly(.epsilon.-caprolactone) segment and (C) polyglycolic acid segment, preparation process of the block copolymer, and medical molded articles prepared from said block copolymer. The bioabsorbable block copolymer is excellent in mechanical strength and flexibility and has moderate hydrolyzability and is especially utilized for a surgical monofilament suture.

Abstract: Disclosed are blends of polyesteramides and polyester resins, optionally with polycarbonates, as well as methods for preparing said blends thereof. Preferred polyesteramides are those comprising amide units of formula (I): ##STR1## and ester units of formula (II): ##STR2## wherein the ratio of (I) to (II) is at least 1:1, and more preferably wherein at least 80% of the units of formula (I) are separated by at least one of the units of formula (II).

Abstract: Coatings are described derived from a curable coating composition comprising:(a) a non-polymeric organic compound having a molecular weight of from 75 to 2000 comprising a plurality of carbamate active hydrogens, and(b) a second component comprising a compound having a plurality of functional groups that are reactive with said carbamate active hydrogens.

Abstract: The invention pertains to a non-linear optically active (NLO) side chain polycarbonate and to NLO active waveguides containing said polycarbonate. Waveguides containing this NLO polycarbonate have a low loss of signal. Polycarbonates based on bischloroformates of hexafluorobisphenol A, hexafluorotetrabromobisphenol A and bisphenol S or deuterated bisphenol A or sulphonylbiphenol are especially preferred within the framework of the invention: they were found to give an exceptionally low loss of signal. The invention further pertains to cross-linkable and already cross-linked polycarbonates. Especially preferred polycarbonates according to the invention are those where the diol comprises a rigid donor group. These polycarbonates have a high Tg, which renders them thermally stable.

Abstract: Thermoplastic moulding materials containingA. 15 to 80 parts by weight of a thermoplastic polycarbonate or polyester carbonate, andB. 4 to 40 parts by weight of a graft polymer ofB.1 20 to 60 weight % of one or more monomers onB.2 40 to 80 weight % of one or more graft bases having glass transition temperatures <0.degree. C., andC. 16 to 45 parts by weight of a thermoplastic, aromatic vinyl (co)polymer,wherein the graft base B.2 has an average particle size (d.sub.50 value) of 0.20 to 0.35 .mu.m and the weight ratio of components B:C is between 2:1 and 1:4.

Abstract: Rigid-rod macromonomers, and methods for preparing such macromonomers, having a polyaromatic backbone, solubilizing side groups, and reactive end groups are provided. The macromonomers are chemically incorporated into polymer systems to provide stronger, stiffened polymers.

Abstract: A heat resistant copolycarbonate comprises a component of the formula: ##STR1## and a component selected from: ##STR2## R.sup.1 and R.sup.2 are same or different halogens or monovalent hydrocarbons, R.sup.3, R.sup.4, R.sup.6 and R.sup.7 are hydrogen atoms or monovalent hydrocarbons, R.sup.5 and R.sup.8 are bivalent hydrocarbons,R.sup.a, R.sup.b, R.sup.c R.sup.d, R.sup.e, R.sup.f, R.sup.g R.sup.j, R.sup.k and R.sup.l are the same or different halogen atoms, hydrocarbon groups having 1-10 carbon atoms, or hydrocarbon groups having 1-10 carbon atoms which are at least partially halogen-substituted and R.sup.b and R.sup.c may also be hydrogen,m, n, s, t, u, v and w are integers from 0-4, p and q are integers from 0-3 and r is an integer from 1-10.

Abstract: A processes for producing a (co)polycarbonate having a low terminal hydroxyl group concentration and being excellent in heat resistance and hue, which comprises melt-polycondensing a dihydroxy compound with a carbonic diester in the presence of a catalyst for transesterification selected from the group consisting of a nitrogen-containing basic compound, an alkali metal borate and an alkaline earth metal borate and in the presence of a specific ester compound.

Abstract: A supercritical graft copolymerization process is described which includes the steps of: adding a polymer into a high pressure reactor; adding a free radically polymerizable monomer into the reactor; adding a free radical polymerization initiator; adding a sufficient amount of a supercritical solvent to dissolve at least a portion of the polymer and the monomer when supercritical conditions are achieved inside the reactor; and heating and pressurizing the reactor to achieve supercritical conditions therein for a time sufficient to effect a graft copolymerization on the polymer by the polymerizing monomer which forms at least one side chain on the polymer. In general, the reaction pressure will range from 70 atm. to 200 atm. and the reaction temperature will range from 50.degree. C. to 90.degree. C. In the examples provided above, the supercritical solvent was carbon dioxide.

Abstract: Poly-p-dioxanone is prepared in a process comprising:(a) heating a reaction mixture comprising p-dioxanone and an effective amount of a polymerization catalyst under conditions of temperature and pressure effective to produce a reaction product mixture comprising molten poly-p-dioxanone and unreacted p-dioxanone;(b) adding to said reaction product mixture a cyclic anhydride under conditions effective for reaction of the poly-p-dioxanone with the cyclic anhydride to form an end-capped poly-p-dioxanone;(c) exposing the reaction product mixture to a temperature within the range of about 50 to about 150.degree. C. under reduced pressure and removing unreacted p-dioxanone from the reaction product mixture; and(d) recovering the end-capped poly-p-dioxanone.The invention process permits the economical production of high molecular weight poly-p-dioxanone in the melt.

Abstract: Sulfonimide cure catalysts are used with aminoplast crosslinking agents and resins capable of reacting with aminoplast crosslinking agents to prepare heat curable compositions capable of crosslinking to form coatings and articles. Liquid or solid curable compositions may be prepared. Solid sulfonimide catalysts used in combination with solid glycoluril type crosslinking agents are well suited for powder coating systems containing hydroxy- and carboxy-functional resins.

Abstract: The present invention relates to a polymer including a fullerene core and a plurality of prepolymer units. Each of the prepolymer units is linked to a carbon atom of the core by a moiety independently selected from the group consisting of --O--(C.dbd.O)--NH--, --NH--(C.dbd.O)--NH--, --0--(C.dbd.S)--NH--, and --N--(C.dbd.S)--NH--.

Abstract: The present invention relates to thermoplastic aromatic polycarbonates having a content of special aryl phosphines, to their preparation, and to their use in the light engineering sector and in optics.