China Petroleum & Chemical Corporation

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

Other

Beijing Research Institute of Chemical Industry

China Petroleum & Chemical Corporation Beijing Research Institute of Chemical Industry

Jingbo Shao

Shijun Zhang

Wei Zhang

Kai Xu

Qi Zhang

Hua Yin

Jinliang Qiao

Dali Gao

Yiqing Bai

Liqiu Chu

Qiang Li

Xiaohong Zhang

Jianming Gao

Genshuan Wei

Liying Zhang

Yun Lyu

Renli Zhai

Jianye Liu

Yihui Xu

Hao Zou

Mu Dong

Peng Guo

Meng Xu

Zhihai Song

Yiqun Liu

Jiuqiang Li

Fan Huang

Baige Chou

Qingquan Yang

Chenxi Hu

Liangshi Wang

Meifang Guo

Luqiang Yu

Hongwei Shi

Mingfu Lyu

Hui Quan

Honghong Huang

Yaohui Xu

Jianjun Yin

Yujing Tang

Ruxian Li

Yigun Liu

Fengru Zhang

Kunkai Yan

Changjin Li

Ruoshi Chen

Yutao Wang

Yueming Ren

A flame-retardant antimicrobial agent is a polymer microsphere with the surface grafted thereof with a guanidine salt. The polymer microsphere has a cross-linked structure composed of a structural unit A derived from maleic anhydride, a structural unit B derived from a monomer M, and a structural unit C derived from a cross-linking agent. The monomer M is selected from a C-Caliphatic olefin or a mixture thereof, and the guanidine salt comprises at least one guanidine salt having the property of flame resistance. The flame-retardant antimicrobial agent has both a good antimicrobial effect and a good flame-retardant effect. A flame-retardant antimicrobial thermoplastic resin composition containing the flame-retardant antimicrobial agent also has a good flame-retardant and antimicrobial performance and a good overall performance.

Flame-retardant antimicrobial agent, preparation method therefor and use thereof, and flame-retardant antimicrobial thermoplastic resin composition

A method for preparing a polyolefin resin powder has the steps of The difference between the solubility parameters of the organic solvent and of the polyolefin resin is within 0-20% of the solubility parameter of the polyolefin resin. The polyolefin resin powder obtained according to this method has good antioxidant property, good powder flowability, moderate size, smooth surface, suitable bulk density, and suitable dispersibility and particle size distribution.

Polyolefin resin powder suitable for selective laser sintering and its preparation method

A method for preparing an aliphatic polyester resin powder includes the steps of a) heat dissolving a crystalline aliphatic polyester resin in an organic solvent to obtain an aliphatic polyester resin solution; b) cooling the aliphatic polyester resin solution to precipitate a solid, thereby obtaining a solid-liquid mixture; c) optionally adding an adjuvant to the solid-liquid mixture and mixing; and d) conducting solid-liquid separation and drying to obtain an aliphatic polyester resin powder suitable for selective laser sintering. The crystalline aliphatic polyester resin powder obtained has good antioxidant property, good powder flowability, moderate size, smooth surface, suitable bulk density, and suitable dispersibility and particle size distribution. The aliphatic polyester resin powder is particularly suitable for selective laser sintering method.

Aliphatic polyester resin powder suitable for selective laser sintering and its preparation method

A polyethylene composition comprising an ethylene/&#x3b1;-olefin copolymerized linear low density polyethylene, wherein the polyethylene composition has a Mw of from 100,000 g/mol to 200,000 g/mol, a Mw/Mn of from 4.0 to 9.0, a Mz/Mw of from 4.0 to 7.0, and a Mz+1/Mw of from 4.5 to 13.5, is provided. A film formed of the polyethylene composition is also provided.

Polyethylene compositions and films formed therefrom

A toughened plastic and its preparation method, with the toughened plastic being obtained by rubber-plastic blending of brittle or less brittle plastics and a rubber mixture. The rubber mixture consists of powdery rubbers having a cross-linked structure and an average particle size of not more than 0.50 &#x3bc;m, and at least one selected from the group consisting of unvulcanized rubbers and thermoplastic elastomers. The morphology and the particle size distribution of the rubber phase contained in the toughened plastic can be controlled by changing the particle size of the powdery rubbers having a cross-linking structure and choosing proper unvulcanized rubbers or thermoplastic elastomers. The toughened plastic has good toughness and processability while keeping better strength and stiffness.

Toughened plastics and its preparation method

The present invention provides plastics with high toughness and the preparation thereof. The plastics with high toughness, which have the balance of stiffness and toughness, stable properties and good processability, are obtained by blending the rubber particles having an average particle size of 20 to 200 nm with the pseudoductile plastics, wherein the weight ratio of the rubber particles to the plastics is from 0.5:99.5 to 70:30. The present invention also provides plastics with both high stiffness and high toughness and the preparation thereof. The plastics with both high stiffness and high toughness, which have also an improved heat resistance and good processability, are prepared by blending the rubber particles having an average particle size of 20 to 500 nm and the crystalline plastics, wherein the amount of the rubber particles added in the plastics matrix is from 0.3 to 5 weight parts.

Toughened plastics and preparation thereof

The present invention provides a fully vulcanized powdery rubber having a particle size of from 20 to 2000 nm, its preparation and use. The vulcanized powdery rubber is obtained by irradiating a rubber latex having a particle size of from 20 to 2000 nm with a high-energy irradiation. The vulcanized powdery rubber is very easily to be dispersed into various plastics, and thus can be mixed with various plastics to prepare toughened plastics and fully valcanized thermoplastic elastomers.

Fully vulcanized powdery rubber having a controllable particle size, preparation and use thereof

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Beijing, China

Jingbo Shao