Abstract: Extruded polymer foams are made from a polymer composition that includes an unbrominated styrenic polymer, a brominated vinyl aromatic/butadiene flame retardant, and an unbrominated vinyl aromatic/butadiene polymer. The unbrominated vinyl aromatic/butadiene polymer improves the cell homogeneity.

Abstract: Aliphatic bromine-containing polymers are stabilized using a mixture of an alkyl phosphite and an epoxy compound. This stabilizer package is very effective at preventing cross-linking reactions from occurring when the aliphatic bromine-containing polymer is subjected to high temperatures as are seen in melt processing operations. The stabilized aliphatic bromine-containing polymer is useful as a flame retardant for other polymers, notably polystyrene foam.

Abstract: Aliphatic bromine-containing polymers are stabilized using a mixture of an alkyl phosphite and an epoxy compound. This stabilizer package is very effective at preventing cross-linking reactions from occurring when the aliphatic bromine-containing polymer is subjected to high temperatures as are seen in melt processing operations. The stabilized aliphatic bromine-containing polymer is useful as a flame retardant for other polymers, notably polystyrene foam.

Abstract: Extruded polystyrene foams are made with an added brominated styrene-butadiene polymer as a flame retardant. The blowing agent is a mixture of carbon dioxide, ethanol and water, which may also contain a C4-C5 hydrocarbon. The blowing agent mixture overcomes a tendency of the brominated styrene-butadiene to form very small cells. This allows the foam to expand fully to form good quality, low density extruded foam.

Abstract: Extruded polymer foams are made from a polymer composition that includes an unbrominated styrenic polymer, a brominated vinyl aromatic/butadiene flame retardant, and an unbrominated vinyl aromatic/butadiene polymer. The unbrominated vinyl aromatic/butadiene polymer improves the cell homogeneity.

Abstract: Aliphatic bromine-containing polymers are stabilized using a mixture of an alkyl phosphite and an epoxy compound. This stabilizer package is very effective at preventing cross-linking reactions from occurring when the aliphatic bromine-containing polymer is subjected to high temperatures as are seen in melt processing operations. The stabilized aliphatic bromine-containing polymer is useful as a flame retardant for other polymers, notably polystyrene foam.

Abstract: Brominated styrene-butadiene copolymers are useful gas transport films. The gas transport films are made by brominating a starting styrene-butadiene copolymer, and then forming the brominated styrene-butadiene copolymer into a film. The film may contain a blend of the brominated styrene-butadiene copolymer with one or more other polymers. The films have excellent selectivities between certain pairs of gasses, and exhibit high gas transport rates for various gasses such as carbon dioxide and water vapor.

Abstract: Impact-modified polystyrene resins such as HIPS and ABS resins are blended with a brominated vinyl aromatic-butadiene copolymer. The brominated copolymer is an effective flame retardant in these compositions, allowing in many cases a V-1 rating to be achieved in the UL-94 vertical burn test.

Abstract: Brominated styrene-butadiene copolymers are useful gas transport films. The gas transport films are made by brominating a starting styrene-butadiene copolymer, and then forming the brominated styrene-butadiene copolymer into a film The film may contain a blend of the brominated styrene-butadiene copolymer with one or more other polymers. The films have excellent selectivities between certain pairs of gasses, and exhibit high gas transport rates for various gasses such as carbon dioxide and water vapor.

Abstract: Brominated and epoxidized organic compounds are useful flame retardants for polymers such as polystyrene. The organic compounds contain both bromine and oxirane groups, and have molecular weights of at least 1500. The brominated and epoxidized organic compounds can be prepared by sequentially brominating and epoxiding (in either order) a starting compound that contains multiple non-conjugated carbon-carbon double bonds.

Abstract: Extruded polystyrene foams are made with an added brominated styrene-butadiene polymer as a flame retardant. The blowing agent is a mixture of carbon dioxide, ethanol and water, which may also contain a C4-C5 hydrocarbon. The blowing agent mixture overcomes a tendency of the brominated styrene-butadiene to form very small cells. This allows the foam to expand fully to form good quality, low density extruded foam.

Abstract: Brominated styrene-butadiene copolymers are recovered from solutions in a halogenated solvent by an anti-solvent precipitation process. The precipitation process is performed by adding the anti-solvent to the brominated styrene-butadiene copolymer solution. By performing the precipitation using this specific order of addition, a denser product is obtained that is easier to dry. The recovered product shows a reduced tendency to act as a nucleating agent when it is used as a flame retardant additive in an extrusion foaming process.

Abstract: Aliphatic bromine-containing polymers are stabilized using a mixture of an alkyl phosphite and an epoxy compound. This stabilizer package is very effective at preventing cross-linking reactions from occurring when the aliphatic bromine-containing polymer is subjected to high temperatures as are seen in melt processing operations. The stabilized aliphatic bromine-containing polymer is useful as a flame retardant for other polymers, notably polystyrene foam.

Abstract: Brominated and epoxidized organic compounds are useful flame retardants for polymers such as polystyrene. The organic compounds contain both bromine and oxirane groups, and have molecular weights of at least 1500. The brominated and epoxidized organic compounds can be prepared by sequentially brominating and epoxiding (in either order) a starting compound that contains multiple non-conjugated carbon-carbon double bonds.

Abstract: The present invention relates to a composition comprising a blend of a luminescent polymer and a low molecular weight (<5000 amu) viscosity modifier, which has an emission maximum in the range of 350-480 nm, contains no exocyclic double bonds, and modifies the viscosity of the polymer without substantially altering emissive properties of the neat polymer. Modification of viscosity without concomitant modification of emissive properties is desirable where the polymer is already tuned to emit at the desired wavelength.

Abstract: The present invention relates to a composition comprising a blend of a luminescent polymer and a low molecular weight (<5000 amu) viscosity modifier, which has an emission maximum in the range of 350-480 nm, contains no exocyclic double bonds, and modifies the viscosity of the polymer without substantially altering emissive properties of the neat polymer. Modification of viscosity without concomitant modification of emissive properties is desirable where the polymer is already tuned to emit at the desired wavelength.

Abstract: A process for preparing a thermoplastic hydroxy-functionalized polyester comprises contacting a dicarboxylic acid or a mixture of dicarboxylic acids with a diepoxide in a given solvent in the presence of an end-capping agent and a catalyst under conditions sufficient to form the hydroxy-functionalized polyesters or polyethers.

Abstract: Thermoplastic hydroxy ether polymers containing inertly substituted or unsubstituted stilbene and ether linkages in the backbone chain and pendant hydroxyl moieties are prepared by reacting (a) an inertly substituted or unsubstituted dihydroxy-stilbene with (b) a diglycidyl ether and, optionally, (c) a difunctional monomer under conditions sufficient to cause the hydroxyl moieties to react with the epoxy moieties to form ether linkages and pendant hydroxyl moieties. The polymers exhibit excellent oxygen barrier properties and are useful in packaging oxygen-sensitive materials.

Abstract: Polyaminoethers prepared by reacting (1) a primary amine or bis(secondary) diamine with (2) a diglyeidyl ether and (3) an amine- or epoxy-functionalized poly(alkylene oxide) exhibit a combination of low glass transition temperature (Tg of 14.degree. C. to 73.degree. C.) and low oxygen transmission rate (OTR of 0.53 to 19.0 cc-mil/100-in.sup.2 -atm-day).

Abstract: Polyethers having improved barrier to oxygen are normally solid, thermoplastic polyethers having aromatic ether repeating units in their backbones and pendent hydroxyl moieties and pendent amido, N-substituted amido and/or hydroxyalkyl moieties. Such polyethers are prepared by reacting diglycidyl ethers of dihydric aromatic compounds such as the diglycidyl ether of bisphenol A with dihydric phenols having pendent amido, N-substituted amido and/or hydroxyalkyl moieties such as 2,2-bis(4-hydroxyphenyl)acetamide and 3,5-dihydroxybenzamide.