4622 results about "Butanediol" patented technology

A continuous and modular process converts lignocellulosic materials for the production of ethanol principally and / or chemicals such as methanol, butanediol, propanediol, hydrocarbon fuel, etc. Renewable lignocellulosic biomass such as but not all inclusive hardwoods (gum, beech, oak, sweet gum, poplar, eucalyptus, etc.), soft woods (pines, firs, spruce, etc.), corn stovers, straws, grasses, recycled papers, waste products from pulp and paper mills, etc can be used as feedstock. The process is designed to be modular and the feed entry point can be selected to adapt to different biomass feedstock. Lignocellulosic biomass such as hardwood and softwood are subjected to chemical / pressure treatment stages using potent and selective chemicals such as sodium chlorite / acetic acid (anhydrous) and chlorine / chlorine dioxide to separate the main components—lignin, cellulose (glucose) and hemicelluloses (xylose, arabinose, galactose)—into three process streams. The separated carbohydrates are further subjected to washing, cleaning, neutralization, and / or mild hydrolysis and subsequently fermented to produce ethanol. Residual lignin and extractives remained with the cellulose are removed by chemical treatment steps to enhance the fermentations of cellulose. Pre-hydrolysate after neutralization to neutralize and remove toxic components such as acetic acid, furfural, phenolics, etc. containing (xylose, arabinose, galactose) and hexoses (glucose) can be either separately or together with the purified cellulosic fraction fermented to produce ethanol. Approximately 100 gallons of ethanol, suitable to be used as a fuel, can be produced from one dried ton of wood. Significant amount of lignin are separated as a by-product and can be converted to hydrocarbon fuel, surfactant, drilling aid, or can be incinerated for generation of power and steam.

The invention provides a non-naturally occurring microorganism comprising one or more gene disruptions, the one or more gene disruptions occurring in genes encoding an enzyme obligatory to coupling 1,4-butanediol production to growth of the microorganism when the gene disruption reduces an activity of the enzyme, whereby the one or more gene disruptions confers stable growth-coupled production of 1,4-butanediol onto the non-naturally occurring microorganism. The microorganism can further comprise a gene encoding an enzyme in a 1,4-butanediol (BDO) biosynthetic pathway. The invention additionally relates to methods of using microorganisms to produce BDO.

This invention concerns novel compositions, useful as hydrogenation catalyst, said compositions comprising metals and metal ions such as ruthenium (Ru) or palladium (Pd) dispersed in and distributed throughout a matrix comprising an inorganic or silicon oxide network. The catalyst may be prepared by the sol-gel method; a solution of at least one catalytic metal compound is added to a solution of at least one metal alkoxide selected from Al, Ti, Nb, Zr, Ta, Si and other inorganic alkoxides, and then gelling the mixture. Promotors such as rhenium (Re), molybdenum (Mo) and tin (Sn) may be added. The catalyst may be used in the reduction of metallic acid or gamma-butyrolactone to tetrahydrofuran (THF) and 1,4-butanediol (BDO).

The invention provides a non-naturally occurring microbial organism having 4-hydroxybutanoic acid (4-HB) and 1,4-butanediol (1,4-BDO) biosynthetic pathways. The pathways include exogenous nucleic acids encoding a) an α-ketoglutarate decarboxylase; b) a 4-hydroxybutanoate dehydrogenase; c) a 4-hydroxybutyryl-CoA:acetyl-CoA transferase or a butyrate kinase and a phosphotransbutyrylase; d) an aldehyde dehydrogenase, and e) an alcohol dehydrogenase, wherein the exogenous nucleic acids are expressed in sufficient amounts to produce 1,4-butanediol (1,4-BDO). Also provide is a method for the production of 1,4-BDO. The method includes culturing the non-naturally occurring microbial organism having 4-HB and 1,4-BDO biosynthetic pathways substantially anaerobic conditions for a sufficient period of time to produce 1,4-BDO.

The invention provides non-naturally occurring microbial organisms comprising a 1,4-butanediol (BDO) pathway comprising at least one exogenous nucleic acid encoding a BDO pathway enzyme expressed in a sufficient amount to produce BDO. The invention additionally provides methods of using such microbial organisms to produce BDO.

The invention provides non-naturally occurring microbial organisms comprising a 1,4-butanediol (BDO) pathway comprising at least one exogenous nucleic acid encoding a BDO pathway enzyme expressed in a sufficient amount to produce BDO and further optimized for expression of BDO. The invention additionally provides methods of using such microbial organisms to produce BDO.

Sulfonated aliphatic-aromatic copolyesters and articles made therefrom, and processes for producing the sulfonated aliphatic-aromatic copolyesters and articles are provided. Articles that can be made from the sulfonated aliphatic-aromatic copolyesters include films, coatings and laminates. Some of the compositions and articles are biocompostable. The films can further be used to form shaped articles such as sheets, food packaging such as sandwich wraps, thermoformed containers, and coatings for, for example, films and other substrates. The sulfonated aliphatic-aromatic copolyesters are derived from copolyesters produced from aliphatic-aromatic copolyesters formed from an aromatic dicarboxylic acid component, an aliphatic dicarboxylic acid component, a first glycol component consisting of 1,4-butanediol, a second glycol component, and optionally, a polyfunctional branching agent.

A non-naturally occurring microbial organism having an isopropanol, 4-hydroxybutryate, or 1,4-butanediol pathway includes at least one exogenous nucleic acid encoding an isopropanol, 4-hydroxybutryate, or 1,4-butanediol pathway enzyme expressed in a sufficient amount to produce isopropanol, 4-hydroxybutryate, or 1,4-butanediol. The aforementioned organisms are cultured to produce isopropanol, 4-hydroxybutryate, or 1,4-butanediol.

The invention provides a method for preparing a butanediol secondary hydrogenation catalyst through adopting the butynediol two-step hydrotreation, and the method comprises the following steps: an accelerant is introduced into an alumina carrier; the carrier is heated; mixed nickel complex solution containing organic nickel salt, inorganic nickel salt and surfactant is prepared; the mixed nickel salt solution is dipped on the heated carrier, and the catalyst product with the nickel content of 5-25 w% and the accelerant content of 0.001-6 w% can be obtained by drying, baking, deoxidizing and passivating. The catalyst can be used in the process of preparing the butanediol secondary hydrogenation by adopting the butynediol two-step hydrotreation, the carbonyl can be reduced to be lower than 0.2 mg (KOH)*g<-1>, and the contents of acetal and butylene glycol are enabled to be reduced to the lowest level. Through the subsequent rectification, the butylene glycol product with the purity more than or equal to 99.5 percent and the chromaticity lower than or equal to 10 AHPA can be produced.

Processes for separating butanediols from glycols are disclosed, as well as products and compositions resulting therefrom.

A high flux of metabolites from pyruvate to 2,3-butanediol in Lactobacillus plantarum was achieved through genetic engineering. Substantial elimination of lactate dehydrogenase activity in the presence of heterologously expressed butanediol dehydrogenase activity led to 2,3 butanediol production that was at least 49% of the total of major pyruvate-derived products.

The invention relates to a two-package curing type polyurethane paint and preparation thereof. The raw material system of the paint comprises a polyether polyol, a isocyanate, a small molecular chain expander and a solvent, wherein polydihydrofuran ether glycol with molecular weight between 700 to 1500 is used as the plyether polyol; methyl diphenylene diisocyanate is used as the isocyanate, 1,4-butanediol is used as the small molecular chain expander, dimethylformamide is used as the solvent. Weight proportion between the plyether polyol, the small molecular chain expander and the solvent is 1:0.7 - 0.85:8 - 15. Colloidal viscosity of the polyether polyol at 25 DEG C. is between 3000 and 2000cps. The paint is obtained by primarily charging DMF as the solvent, the polyether polyol and the chain expander into the reaction container simultaneously at one time, and then gradually charging the isocyanate for the reaction. By using MDI to substitute TDI for preparation of the polyurethane paint preparation, the invention is low in viscosity, great in levelability, easy for hardness adjustment, low in cost, safe and environment friendly in use.

A non-naturally occurring microbial organism having a 1,3-butanediol (1,3-BDO) pathway includes at least one exogenous nucleic acid encoding a 1,3-BDO pathway enzyme or protein expressed in a sufficient amount to produce 1,3-BDO. A method for producing 1,3-BDO that includes culturing the this non-naturally occurring microbial organism under conditions and for a sufficient period of time to produce 1,3-BDO.