Inventor

HUA WEIQI

CN36 patents

⚠️ This page may combine multiple inventors who share the name “HUA WEIQI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HUA WEIQI

WANHUA CHEMICAL GROUP CO LTD

Preparation method for propylene epoxidation catalyst, and application thereof

Method for treating reverse osmosis concentrated water

Method for preparing catalyst used for preparing chlorine, catalyst and method for preparing chlorine

Isocyanate polymerization catalyst, preparation method thereof, and method for preparing polyisocyanate by using same

Supported catalyst used for synthesizing polyether amine, and manufacturing method

Catalyst for preparing chlorine gas by hydrogen chloride oxidation, and preparation method and application thereof

Catalyst for preparing 1,5-pentanediol via hydrogenolysis of tetrahydrofurfuryl alcohol, method and application thereof

Silicalite-1 molecular sieve-based catalyst and preparation method for 1,2-pentanediol using said catalyst

Imine-type quaternary ammonium salt catalyst, preparation method thereof and use thereof for preparation of polyisocyanate composition

Method for preparing diamino-dicyclohexyl methane

Olefin epoxidation catalyst, preparation method therefor, and application thereof

Method for preparing biuret polyisocyanate

Preparation method for polyurethane optical resin and applications thereof

Preparation method for olefin epoxidation catalyst and applications thereof

Catalyst for catalytic oxidation treatment of organic wastewater, preparation method thereof, and application thereof

Solvent refining method for isocyanate prepared by phosgene method and devices used in same

Catalyst for preparing phosgene and method for preparing phosgene using the same

Method for preparing reactive sealant resin

Method for preparing isocyanate in gaseous phase

Emulsifiable isocyanate composition and preparation method and use thereof

Method for preparing hydroxyethyl (meth) acrylate

Method for preparing 3-aminomethyl-3,5,5-trimethyl cyclohexylamine

Catalyst for preparing α-phenylethanol by hydrogenation of acetophenone, preparation method thereof and application thereof

Catalyst for preparing chlorine by oxidation of hydrogen chloride and preparation thereof

Composite catalyst, preparation process thereof, and process for catalyzing the trimerization of butadiene using the composite catalyst

Heater, use thereof and method for preparing isocyanate using heater

Polycarbonate preparation method

Method for preparing branched polycarbonate with continuous two-phase interface phosgene method

NINGBO WANHUA POLYURETHANES CO

Method of preparing polymethylene-polyphenyl-polyamine

Hole-jetting type mixer-reactor

WANG YE

High-selectivity catalyst for production of high-quality gasoline fractions from syngas and its preparation method

DING JIANSHENG

High-speed mixing reactor and application thereof

CHEN CHANGSHENG

3-aminomethyl-3, 5, 5-trimethyl cyclohexylamine preparation method

HU SHUANG

Method for intermittently producing 4,4′-diaminodicyclohexylmethane with a low amount of the trans-trans isomer

ZHANG HONGKE

Method for treating waste saline water produced in production process of diphenylmethane diisocyanate (MDI)

SHANG YONGHUA

Jet reactor with flow ducts and process for preparing isocyanates using it