Abstract: Provided are porous polymeric filter membranes comprising a polymer having admixed therein at least one carbonaceous material. The membranes are capable of removing trace amounts of various impurities from a liquid composition, including metal ions, acids, bases, and organic contaminants.

Abstract: The disclosure is directed to removal of metal contaminants from fluids, as well as ligand-modified filter materials useful for carrying out such methods. The filters and methods of this disclosure are particularly effective for removal of metals from liquid compositions comprising amines. Such liquid compositions with significantly reduced amounts of metals can be used in a microelectronic manufacturing process, such as liquids for removing photoresist or liquids used in etching. The ligand-modified filters, such as ligand-modified porous membranes, can be configured for use in a microelectronic manufacturing system, which can be utilized in the system as a point of use metal-removal feature for liquids entering the system.

Abstract: The present invention relates to specific deoxybenzoin containing flame retardant polyesters and flame retardant thermoplastic polymer molding compositions comprising deoxybenzoin containing flame retardant polyesters as well as their preparation and use for producing moldings, fibers or foils.

Abstract: An unsaturated deoxybenzoin compound has the structure (I) wherein R1, R2, R3, R4, R5, R6, R7, R8, and n are defined herein. A polymer including at least one group derived from a deoxybenzoin compound having structure (I), (II), or a combination thereof is also described, wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, and n are defined herein.

Abstract: Deoxybenzoin compounds including unsaturation are disclosed. The unsaturated deoxybenxoin compounds have the structure (I), (II), or (III) wherein R1, R2, R3, R4, R5, R6, and n are defined herein. Also disclosed are polyesters including repeating units having the structure (IV), (V), or a combination thereof wherein Ar1, R7, and m are defined herein. The polyesters can be further functionalized, for example by various phosphorous-containing compounds. The polyesters described herein can be useful for the preparation of various articles having reduced flammability.

Abstract: The present invention relates to specific deoxybenzoin containing flame retardant polyesters and flame retardant thermoplastic polymer molding compositions comprising deoxybenzoin containing flame retardant polyesters as well as their preparation and use for producing moldings, fibers or foils.

Abstract: An unsaturated deoxybenzoin compound has the structure (I) wherein R1, R2, R3, R4, R5, R6, R7, R8, and n are defined herein. A polymer including at least one group derived from a deoxybenzoin compound having structure (I), (II), or a combination thereof is also described, wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, and n are defined herein.

Abstract: Deoxybenzoin compounds including unsaturation are disclosed. The unsaturated deoxybenxoin compounds have the structure (I), (II), or (III) wherein R1, R2, R3, R4, R5, R6, and n are defined herein. Also disclosed are polyesters including repeating units having the structure (IV), (V), or a combination thereof wherein Ar1, R7, and m are defined herein. The polyesters can be further functionalized, for example by various phosphorous-containing compounds. The polyesters described herein can be useful for the preparation of various articles having reduced flammability.

Abstract: Polymers and copolymers containing 1H-benzo[d]imidazol-2(3H)-one units have been synthesized under conditions generally used for the synthesis of poly(aryl ether)s. 1H- benzo[d]imidazol-2(3H)-one behaves like a biphenol in the polymerization reaction. The soluble homopolymer has a very high glass transition temperature (348° C.), good thermal stability, and forms flexible transparent films. Because of the low molecular weight (134.14) of the benzoimidazolone monomer in the copolymer formed with 4,4?-biphenol that contains 30 mole % of the benzimidazolone unit, only 8.9 weight % is required to raise the Tg of the poly(arlyl ether)sulfone from 220° C. to 269° C.