Patents Assigned to Dow Chemical (China) Investment Company Limited
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Publication number: 20250041823Abstract: A modified zeolite material used for removing metal impurities from an organic solvent composition; the modified zeolite material comprising (i) a hydrogen-based zeolite having hydrogen functionalities, (ii) an ammonium-based zeolite having ammonium functionalities, or (iii) a combination of a hydrogen-based zeolite having hydrogen functionalities and an ammonium-based zeolite having ammonium functionalities; the zeolite material containing a pore size of from 3 ? to 20 ?; and the zeolite material selectively removing metal impurities present in the solvent, to an impurity content of less than 1 ppb; a process for preparing the above modified zeolite material; and a process for removing contaminants from organic solvents using the above modified zeolite material.Type: ApplicationFiled: December 14, 2021Publication date: February 6, 2025Applicant: Dow Chemical (China) Investment Company LimitedInventors: Linping Qian, Gengfeng Zheng, Qi Jiang, Qihao Wang
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Publication number: 20250043213Abstract: A glycol ether-containing water-based composition useful for cleaning contaminants present on the surface of a substrate, such as the surface of a printed circuit board during the manufacturing process of the printed circuit board, the contaminants including for example, solder flux and photoresist on the printed circuit board; the glycol ether-containing water-based composition including: (a) at least one glycol ether having a high boiling point and a low VOC; (b) at least one organic amine; (c) at least one surfactant; and (d) water; a process for producing the above glycol ether-containing water-based composition; and a process for cleaning a printed circuit board using the above glycol ether-containing water-based composition.Type: ApplicationFiled: December 14, 2021Publication date: February 6, 2025Applicant: Dow Chemical (China) Investment Company LimitedInventors: Qi Jiang, Edward D. Daugs, Meijia He
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Publication number: 20170037266Abstract: The present invention is a composition comprising a stable aqueous dispersion of polymer particles and a sorbate ester, which is a liquid at 20° C. and has a molecular weight in the range of 125 to 500 g/mol. The composition of the present invention provides a way to enhance film formation of coatings prepared using relatively high Tg latexes without the aid of high volatile organic content (VOC) coalescents.Type: ApplicationFiled: April 16, 2014Publication date: February 9, 2017Applicants: The Dow Chemical Company, Dow Chemical (China) Investment Company LimitedInventors: Steven Arturo, Selvanathan Arumugam, Kebede Beshah, David Conner, John Ell, Ralph C. Even, Fujun Lu, Bo Lu, Brandon Rowe, Justin Sparks, Jianping Xu, Jiguang Zhang
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Publication number: 20160251507Abstract: A novel polymer mixture having fast drying time, a multilayer article comprising at least two layers of the dried polymer mixture and having good mechanical properties, water resistance and weatherability, and a method of preparing the multilayer article.Type: ApplicationFiled: October 11, 2013Publication date: September 1, 2016Applicant: Dow Chemical (China) Investment Company LimitedInventors: Liang Zhang, Jingui Jiang, Yongchun Chen, Yan Li, Wei Li
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Publication number: 20150299378Abstract: A curing agent composition including (a) at least one phenalkamine blended with (b) at least one styrenated phenol or styrenated phenol novolac compound to form a curing agent composition for an epoxy compound; a curable resin composition including (I) at least one epoxy compound; and (II) at least one phenalkamine blended with (III) at least one styrenated phenol or styrenated phenol novolac compound; and a thermoset prepared from the above curable composition.Type: ApplicationFiled: October 31, 2012Publication date: October 22, 2015Applicants: Dow Chemical (China) Investment Company Limited, The Dow Chemical CompanyInventors: Cuiping CHEN, Yi Zhang, Wei Zhou
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Publication number: 20150284562Abstract: A curable epoxy resin composition including: (a) a cycloaliphatic epoxy resin, (b) an oxazolidone ring-containing epoxy resin, (c) a reaction product of (i) an anhydride compound and (ii) a polyol, and (d) an anhydride hardener; a process for preparing the curable epoxy resin composition; and a composite including a reinforcing fiber embedded in a thermoset resin, wherein the thermoset resin is a reaction product of the curable epoxy resin composition.Type: ApplicationFiled: November 7, 2012Publication date: October 8, 2015Applicants: The Dow Chemical Company, Dow Chemical (China) Investment Company LimitedInventors: Yanli Feng, Lejun Qi, Yi Zhang, Wei Du
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Publication number: 20150240068Abstract: A curing agent composition for an epoxy compound including (a) at least one phenalkamine, and (b) at least one isocyanate; a curable composition including (I) at least one epoxy compound, (II) at least one phenalkamine, and (III) at least one isocyanate; and a thermoset prepared from the above curable composition.Type: ApplicationFiled: October 31, 2012Publication date: August 27, 2015Applicants: Dow Chemical (China) Investment Company Limited, The Dow Chemical CompanyInventors: Lei Yan, Yi Zhang, Wei Zhou