China Petroleum & Chemical Corporation

Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

Taoyi Zhang

Wei Zhang

Peng Guo

Ning Xu

Ling Han

Zifang Guo

Junling Zhou

Guixiang Zhu

Hongtao Wang

Qingqiang Gou

Shiyuan Xu

Mingfu Lyu

Cui Zheng

Hongxu Yang

Wenxi Ji

Ruixia Li

A biodegradable film is prepared from a composition that includes a copolyester obtained by extrusion reaction of a branched aliphatic-aromatic copolyester derived from monomer a, monomer b, monomer c and monomer d with an organic peroxide. The film can be completely degraded into small molecular products such as carbon dioxide, water and the like under natural or composting conditions. Moreover, the film can be prepared having a thickness of 4-50 μm as required, and its mechanical properties can reach the same level as or even better than those of LDPE film.

High strength ultra-thin biodegradable film and preparation method thereof

A catalyst component for ethylene polymerization, comprising an organic silicon compound of the formula (I), below wherein Ris chosen from C-Caliphatic hydrocarbyl groups, and is substituted with at least one substituent chosen from halogens, C-Cacyloxy groups, epoxy, amino, C-Calkylamino groups, di(C-Calkyl)amino groups, C-Calkoxy groups, and oxo group; R, Rand R, which may be the same or different, are each chosen from C-Caliphatic hydrocarbyl, C-Calicyclic hydrocarbyl, C-Caryl, C-Caralkyl, and C-Calkaryl groups. A process for preparing the catalyst component and an active catalyst comprising the catalyst component and useful in polymerization, such as ethylene polymerization. 

Catalyst component for ethylene polymerization, preparation thereof, and a catalyst comprising the catalyst component

Growing community of inventors

Beijing, China

Taoyi Zhang