Abstract: This invention relates to an ion exchange resin for producing bisphenol with high percent conversion and high percent selectivity to bisphenol, especially 4,4? isopropyhdenediphenol, wherein said ion exchange resin comprising aromatic polymer having sulfonic acid group modified with at least one promoter selected from compounds shown in the structure (I), (II), (III), (IV) or its amine salt: wherein R represents hydrocarbon unit with 1 to 6 carbon atoms selected from alkyl group, alkenyl group, alkynyl group, phenyl group, or optionally hydrocarbon containing carbonyl group having 1 to 6 carbon atoms; X represents heteroatom; n is an integer number from 1 to 4.

Abstract: This invention relates to a biodegradable copolyester composition, comprising: a) from 40 to 60 mol %, based on total mole of a) and b), of aromatic dicarboxylic acid selected from benzene dicarboxylic acid or ester derivative of said acid; b) from 40 to 60 mol %, based on total mole of a) and b), of a mixture of aliphatic dicarboxylic acid, wherein b) comprising: b1) from 20 to 80 mol %, based on mole of b), of at least one aliphatic dicarboxylic acid having 2 to 6 carbon atoms; and b2) from 20 to 80 mol %, based on mole of b), of at least one aliphatic dicarboxylic acid having 7 to 14 carbon atoms; c) at least one mole equivalent, based on total mole of a) and b), of diol having 2 to 6 carbon atoms; and d) from 0.1 to 2.0 mole % based on total mole of a), b), c), and d), of alcohol with at least 3 hydroxyl groups. The biodegradable copolyester composition according to this invention has improved thermal property, mechanical property, and biodegradability.

Abstract: The present invention disclosed a bio-based polymer additive, its preparation process and a biodegradable polymer composition comprising the said bio-based polymer additive for use in manufacturing of biodegradable plastic. The said additive is prepared from the biomass of broken microorganism cell such as microalgae, yeast or other microorganisms. In particular, the bio-based polymer additive is for enhancing rheological properties and/or biodegradability of a polymer. In particular, the additive is for use as a pigment.

Abstract: The present invention relates to a method for preparing a high activity olefin polymerization catalyst, which is easy to be produced, reducing complicated steps, and can be produced at low temperature, wherein said method comprising the following steps: • (a) adding a magnesium halide into an alcohol solvent; • (b) precipitating the solution obtained from (a) in a solution of an organic solvent containing an organo compound of group III element; • (c) adding a titanium compound into the mixture obtained from (b) to obtain a catalyst; • (d) treating the catalyst obtained from (c) with an organoaluminium compound at a temperature ranging from 0 to 60° C. for 2 to 5 hours, wherein the mole ratio of aluminium to titanium (Al/Ti) for treatment is in a range of 1 to 30.

Abstract: The present invention relates to a pretreatment process of lignocellulosic biomass, comprising contacting lignocellulosic biomass with pretreatment solution in a temperature ranging from an ambient temperature to 100° C. and a pressure of at least 20 bars, wherein the pretreatment solution comprising water, water-miscible organic solvent and alkali having a concentration of 5 to 15% w/v if the alkali is solid or 5 to 15% v/v if the alkali is liquid. Said pretreatment process operates in mild condition or at low temperature to be specified with the removing of lignin but not destroying cellulose and increasing desired sugar yield.

Abstract: The present invention relates to a high activity olefin polymerization catalyst comprising a boron-containing silica support and the preparation thereof. This invention is characterized in that the support is heat treated in combination with a chemical treatment using a boron compound. The boron compound used in the chemical treatment of this invention is boron halide, preferably boron trichloride. The catalyst of this invention has the weight of boron comparing with the support is 0.5 to 0.7% and has the weight of the boron relative to the catalyst of 0.1 to 0.5%. The catalyst of this invention has chemical compositions comprising:—Boron 0.1-0.5% wt;—Titanium 4-6% wt;—Magnesium 2-6% wt;—Chloride 15-25% wt.

Abstract: The present invention provides the new method for extracting lutein from natural materials wherein the said method comprises of modification of natural lutein ester in the natural materials to free lutein and/or low molecular weight lutein ester, extraction of the said natural materials with supercritical fluid at the optimal conditions. The said method yields high amount of crude lutein with high purity due to the mild condition used for extraction. Therefore, no degradation of the desired product is occurred. The crude lutein can be further purified with chromatography in order to obtain the highly purified lutein. The method according to this invention can be applied to the extraction of xanthophylls or others beside lutein.

Abstract: The present invention relates to a high activity olefin polymerization catalyst comprising a boron-containing silica support and the preparation thereof. This invention is characterized in that the support is heat treated in combination with a chemical treatment using a boron compound. The boron compound used in the chemical treatment of this invention is boron halide, preferably boron trichloride. The catalyst of this invention has the weight of boron comparing with the support is 0.5 to 0.7% and has the weight of the boron relative to the catalyst of 0.1 to 0.5%. The catalyst of this invention has chemical compositions comprising:—Boron 0.1-0.5% wt;—Titanium 4-6% wt;—Magnesium 2-6% wt;—Chloride 15-25% wt.

Abstract: The present invention provides the new method for extracting lutein from natural materials wherein the said method comprises of modification of natural lutein ester in the natural materials to free lutein and/or low molecular weight lutein ester, extraction of the said natural materials with supercritical fluid at the optimal conditions. The said method yields high amount of crude lutein with high purity due to the mild condition used for extraction. Therefore, no degradation of the desired product is occurred. The crude lutein can be further purified with chromatography in order to obtain the highly purified lutein. The method according to this invention can be applied to the extraction of xanthophylls or others beside lutein.