Abstract: Polycarbonate compositions with high flame retardance are disclosed. The compositions include a polycarbonate having repeating units derived from a monomer with an ester side group, and also include a flame retardant additive. These compositions may be further blended with another polycarbonate. The resulting compositions have high flame retardance and improved anti-drip properties.

Abstract: A polyimide composition includes 1 to 99 weight percent, preferably 70 to 99 weight percent, more preferably 75 to 95 weight percent of a first polyimide; and 1 to 99 weight percent, preferably 1 to 30 weight percent, more preferably 2 to 25 weight percent of a second polyimide, wherein the first polyimide and the second polyimide are different, and wherein the polyimide composition has a melt flow rate that is greater than a melt flow rate of the first polyimide and less than a melt flow rate of the second polyimide; an apparent viscosity that is less than an apparent viscosity of the first polyimide and less than an apparent viscosity of the second polyimide; and a notched Izod impact strength that is greater than a notched Izod impact strength of the first polyimide and greater than a notched Izod impact strength of the second polyimide.

Abstract: Provided are methods for preparing dynamic cross-linked polymer compositions derived from 1,4-butane diol, a terephthalic acid and a chain extender combined via continuous polymerization.

Abstract: Provided herein are methods for preparing dynamic cross-linked polymer compositions derived from an ester oligomer component, a chain extender component, and one or more of a transesterification or poly condensation catalyst are described. The dynamic cross-linked polymer compositions may be prepared via melt poly condensation.

Abstract: The present invention relates to a polymer obtainable by reaction of a polyester comprising a quantity of carboxylic terminal groups with a chain extending compound wherein the chain extending compound is selected from an aromatic bis(oxirane ether) or an aromatic bis(methyloxirane ether). Such polymer may have a desired resistance to hydrolytic degradation.

Abstract: Methods for preparing dynamic cross-linked polymer compositions derived from an ester oligomer component, a monomeric chain extender component, and transesterification and polycondensation catalysts are described.

Abstract: Methods for preparing dynamic cross-linked polymer compositions derived from an ester oligomer component, a polymeric chain extender component, and transesterification and poly condensation catalysts are described.

Abstract: A polymer composition including a polyetherimide comprising repeating units of formula (1) and formula (2) [Formula should be inserted here] wherein the repeating units of formula (1) are present in an amount of at least 10 mole %, preferably 20 to 100 mole %, Z is independently at each occurrence derived from a biphenol; Z? is independently at each occurrence a group of formulas (3) to (13) as defined herein, preferably bisphenol A, 1,2-dihydroxybenzene, 1,1-bis(4-hydroxyphenyl)-1-phenyl-ethane, isophorone bisphenol (1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane), spirobiindane bisphenol, dimethylindanone bisphenol, 3,3?-dimethylbisphenol cyclohexane, or fluorenone bisphenol; and R is independently at each occurrence as a C6-20 aromatic hydrocarbon group or a halogenated derivative thereof, a straight or branched chain C2-20 alkylene group or a halogenated derivative thereof, a C3-8 cycloalkylene group or halogenated derivative thereof; wherein the polyetherimide has a Tg of greater than 200° C.

Abstract: Polycarbonate compositions with high flame retardance are disclosed. The compositions include a polycarbonate having repeating units derived from a monomer with an ester side group, and also include a flame retardant additive. These compositions may be further blended with another polycarbonate. The resulting compositions have high flame retardance and improved anti-drip properties.

Abstract: Disclosed is a modified endcapped polyalkylene terephthalate such as modified endcapped polybutylene terephthalate, as well as processes for making the modified endcapped polybutylene terephthalate and compositions and articles derived therefrom.

Abstract: Methods for measuring certain properties of a crosslinked polycarbonate are disclosed. The storage modulus of a crosslinked polycarbonate is measured over a specified temperature range, and the average magnitude of the storage modulus over that temperature range is obtained. The average magnitude can be correlated to both crosslinking within the polycarbonate, and to the flame performance of the crosslinked polycarbonate.

Abstract: Disclosed is a modified endcapped polyalkylene terephthalate such as modified endcapped polybutylene terephthalate, as well as processes for making the modified endcapped polybutylene terephthalate and compositions and articles derived therefrom.

Abstract: Methods for measuring certain properties of a crosslinked polycarbonate are disclosed. The storage modulus of a crosslinked polycarbonate is measured over a specified temperature range, and the average magnitude of the storage modulus over that temperature range is obtained. The average magnitude can be correlated to both crosslinking within the polycarbonate, and to the flame performance of the crosslinked polycarbonate.

Abstract: A polyetherimide composition comprises the polymerization product of a catalyzed imidization product of a 3-substituted phthalic anhydride and a sulfone diamine having improved melt stability and reduced corrosivity, and a method of manufacture thereof.