Abstract: The invention relates to a process for making modified polybutylene terephththalate random copolymers from a polyethylene terephthalate component. The invention relates to a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butanediol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. The invention also relates to compositions made from the process.

Abstract: The invention relates to a process for making modified polybutylene terephththalate random copolymers from a polyethylene terephthalate component. The invention relates to a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butanediol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. The invention also relates to compositions made from the process.

Abstract: A process for making modified polybutylene terephthalate random copolymers from a polyethylene terephthalate component includes reacting an oligomeric diol component selected from the group consisting of bis(hydroxybutyl) terephthalate, bis(hydroxybutyl)isophthalate, hydroxybutyl-hydroxyethyl terephthalate, and combinations thereof to a reactor; (i) a polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers with (ii) a diol component selected from the group consisting of 1,4-butanediol, ethylene glycol, propylene glycol, and combinations thereof, in the reactor under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; combining the first molten mixture is combined with 1,4-butanediol under conditions to form a second molten mixture; and placing the second molten mixture under conditions sufficient to produce the modified polybutylene terephthalate random copolymers.

Abstract: The invention relates to a process for making modified polybutylene terephthalate random copolymers from a polyethylene terephthalate component. The invention relates to a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butanediol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. The invention also relates to compositions made from the process.

Abstract: A process for making modified polybutylene terephthalate random copolymers from a polyethylene terephthalate component includes reacting an oligomeric diol component selected from the group consisting of bis(hydroxybutyl)terephthalate, bis(hydroxybutyl)isophthalate, hydroxybutyl-hydroxyethyl terephthalate, and combinations thereof to a reactor; (i) a polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers with (ii) a diol component selected from the group consisting of 1,4-butanediol, ethylene glycol, propylene glycol, and combinations thereof, in the reactor under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; combining the first molten mixture is combined with 1,4-butanediol under conditions to form a second molten mixture; and placing the second molten mixture under conditions sufficient to produce the modified polybutylene terephthalate random copolymers.

Abstract: A composition of matter comprising a polyester composition derived from: (i) 20 to 80 mole percent of a first diol derived from a disubstituted xylene glycol of the formula (I): wherein R1 and R2 are independently selected from the group consisting of aliphatic radical, aromatic radical, cycloaliphatic, radical and halogen; and (ii) a second diol and (iii) a diacid is disclosed. Also disclosed are blends of these polyesters with polycarbonate and process to prepare these compositions and articles therefrom.

Abstract: A composition of matter comprising a polyester composition derived from: (i) greater than 80 mole percent of a diol derived from a disubstituted xylene glycol of the formula (I): wherein R1 and R2 are independently selected from the group consisting of aliphatic, aromatic, cycloaliphatic, sulfur containing compounds, amines and halogen; and (ii) a diacid is disclosed. Also disclosed are blends of these polyesters with polycarbonate and process to prepare these compositions and articles therefrom.

Abstract: A composition of matter comprising an acid terminated polyester composition containing: (a) a polyester derived from at least one diol selected from the group consisting of ethylene glycol; propylene glycol, butanediol, xylene glycol, and a first diacid component; and (b) a second diacid component; and wherein the composition contains a residual of the second diacid component that is at least less than about 1000 parts per million is disclosed. Also disclosed is a process to prepare these compositions and articles therefrom.

Abstract: The invention relates to a process for making modified polybutylene terephththalate random copolymers from a polyethylene terephthalate component. The invention relates to a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butanediol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. The invention also relates to compositions made from the process.

Abstract: A process to make a polyester is described wherein said polyester comprises, a) substituted or unsubstituted diacid or diester; b) substituted or unsubstituted diol; wherein said diol comprises at least about 0.5 mole percent of butanediol; and c) 0.01 weight percent to about 15 weight percent based on the total weight of the composition a reactive organic compound wherein said organic compound comprises of at least one functional group.

Abstract: A flame retardant resin composition comprising a polyester; wherein the polyester comprises from about 1 to about 15 mole percent of an unsaturated diol; a flame retardant compound, an organic compound comprising of at least one carboxyl reactive group. The composition possesses good stability and mechanical property. Also disclosed is a process to prepare these compositions and articles therefrom.

Abstract: A thermoplastic resin composition is disclosed which includes: structural units derived at least one substituted or unsubstituted polycarbonate, and a polyester comprising structural units derived from at least greater than 40 mole percent of xylene glycol, such that the composition is miscible. Also disclosed is a process of making said thermoplastic compositions and articles derived from said composition. The composition disclosed possess good optical properties, thermal properties and stability.

Abstract: An ignition resistant thermoplastic composition comprising: (a) structural units derived at least one substituted or unsubstituted polycarbonate; (b) a polyester comprising structural units is derived from xylene glycol; (c) 1 weight percent to about 40 weight percent based on the total weight of the composition of a flame retardant compound is disclosed. Also disclosed is a method of making said thermoplastic compositions and articles derived from said composition.