Abstract:
Briefly described, embodiments of the present disclosure include trilobal bulked continuous filaments (BCFs) with a generally round central void, spinneret plates with a capillary design for producing the BCFs of the present disclosure, articles and carpets produced from the BCFs of the present disclosure, methods of producing the trilobal BCFs of the present disclosure, and the like.
Abstract:
The present invention provides a tetrahydrofuran purge stream treatment process, and a process for manufacturing polyether glycol comprising same. The process for treating a tetrahydrofuran stream purged from a polyether glycol manufacturing process comprises steps of neutralizing acidic substances in a tetrahydrofuran stream purged from the polyether glycol manufacturing process with an aqueous base solution, feeding the neutralized effluent to an azeotropic distillation column, and distilling tetrahydrofuran and water overhead from the azeotropic distillation column. The process can further comprise a step of disposing of the neutralized salts and excess base in the aqueous bottoms stream from the azeotropic distillation column. The process can further comprise steps of recovering THF from the overhead of the azeotropic distillation column, and recycling the recovered THF to a polyether glycol manufacturing process.
Abstract:
A process of hydrolyzing a monodentate, bidentate or tridentate phosphorus-based phosphite ester ligand or ligand blend for a transition metal catalyst comprising contacting the ligand or ligand blend with a hydrolysis catalyst of the formula (R11X11)nP(OH)3-n where n is 0, 1 or 2 wherein the ligand or ligand blend comprises one or more of (i) a bidentate biphosphite ligand of formula (III), (R12—X12)(R13—X13)P—X14—Y—X24—P(X22—R22)(X23—R23), (ii) a tridentate triphosphite ligand of formula (IIIA) (R12—X12)(R13—X13)P—X14—Y—X32—P(X34—R34)—(X33—Y2—K24—P(X23—R23)—(X22—R22) or (iii) a monodentate phosphite ligand of formula (IV) P(X1—R1)(X2—R2)(X3—R3) where each X is oxygen or a bond and each Y is an optionally substituted C6-C20 arylene, followed by separation of the ligand hydrolysis products.
Abstract:
The present invention provides an improved process for recovering butanol from a mixture comprising water, methanol, propanol, butanol and optionally other organic compounds. More particularly, the invention relates to a process for recovering butanol as an essentially pure product from a mixture comprising water, methanol, propanol, butanol and other organic compounds.
Abstract:
This document describes biochemical pathways for producing butadiene by forming two vinyl groups in a butadiene synthesis substrate. These pathways described herein rely on enzymes such as, inter alia, a decarboxylating thioesterase, cytochrome P450, or dehydratases for the final enzymatic step.
Abstract:
A process for synthesizing dodecane-1,12-diol, and by-products thereof, by the reduction of lauryl lactone produced from the oxidation of cyclododecanone.
Abstract:
Embodiments of the invention relate to the enzymatic conversion of bioderived feedstocks to commercially valuable chemicals. The enzymatic conversions of the embodiments of the invention offer the potential for lower cost routes to these value-added chemicals. Some of the chemicals that are useful include nylon intermediates such as caprolactam, adipic acid, 1,6-hexamethylene diamine; butanediols such as 1,4-butanediol, 1,3-butanediol, and 2,3-butanediol; butanols such as 1-butanol, and 2-butanol; succinic acid, butadiene, isoprene, and 3-hydroxypropanoic acid.
Abstract:
Disclosed herein are methods for recovering diphosphite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are treatments to enhance extractability of the diphosphite-containing compounds.
Abstract:
An article comprising a yarn comprising an elastomeric propylene-based polymer composition; said polymer composition comprising at least one elastomeric propylene-based polymer, wherein said yarn has break elongation of greater than 200%.
Abstract:
To provide elastic fabric that has comfortable wear and fit even in thin and light fabric by using a high-powered polyurethane elastic fiber that has at least 1.5 times the active force and recovery per unit fineness at the time of 100 to 200% elongation compared to conventional polyurethane elastic fiber. Resolution means an elastic fabric comprising a polyurethane elastic fiber made of a polyol, with a molecular weight between 450 and 1600 with a ratio of weight average molecular weight to number average molecular weight of at least 1.8, an organic diisocyanate compound, and a diamine compound.