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Start Over Author "Hu, Youliang" Publisher springer science and business media llc
11 results on '"Hu, Youliang"'

3. Preparation of long-branched polyethylene byin situ polymerization using late transition metal and metallocene catalysts

Author

Xu Demin, Hu Youliang, Wang Jun, Ma Zhi, Liu Zhongyang, Guo Cunyue, and He Dawei

Subjects
chemistry.chemical_compound, Multidisciplinary, Materials science, Polymerization, chemistry, Polymer chemistry, Copolymer, Coordination polymerization, Post-metallocene catalyst, Polyethylene, In situ polymerization, Metallocene, Catalysis
Abstract

Anin situ polymerization method was investigated to prepare long-branched polyethylene (LBPE) with ethylene alone and a single cocatalyst, methylalumoxane (MAO), by using a dual functional catalytic system containing late transition metal oligomerization catalyst and metallocene copolymerization catalyst. The obtained longbranched polyethylene has the characteristics of low melting point, high activity and well-dispersed sequence distribution.

Published
2001

4. Lldpe prepared byin situ polymerization using a dualfunctional catalytic system of Ti(On-Bu)4 /ALEt3-Et(Ind)2-ZrCl2/MAO

Author

Guo Cunyue, Liu Zhongyang, Wang Jun, HU Youliang, He Dawei, and XU Demin

Subjects
chemistry.chemical_classification, Multidisciplinary, Materials science, Polymer, Polyethylene, Catalysis, Linear low-density polyethylene, chemistry.chemical_compound, Crystallinity, chemistry, Polymerization, Polymer chemistry, Molar mass distribution, Metallocene
Abstract

Linear low-density polyethylene (LLDPE) was prepared byin situ polymerization using a dual-functional catalytic system containing Et(Ind)2ZrCl2/MAO and Ti(OnBu)4/AlEt3 used as co-polymerization catalyst and dimerization catalyst, respectively. The catalytic system showed high activity and the polymer with low melting point, narrow molecular weight distribution (MWD) and low crystallinity was produced.

Published
2001

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