Chang Chun Petrochemical Co., Ltd.

Tsinghua University

Chang Chun Plastics Co., Ltd.

Darien Chemical Corp.

Huan-Ming Chang

Chia-Hao Hsu

Chih-Yuan Lin

Cheng-Fan Wang

Chun-Yu Lee

De-Hao Tsai

Hung-Yen Chang

Guan-Hung Lai

Chih-Cheng Chia

Chuen-Lih Hwang

Jyun-Ru Sun

The present disclosure provides a modified polyvinyl alcohol-based polymer, which comprises a modifying monomer unit represented by Formula  wherein, X is a moiety comprising an alkenyl group, and the modified polyvinyl alcohol-based polymer has a saponification degree of 67 mol % to 78 mol % and a modification rate of 0.02 mol % to 1.5 mol %. The modified polyvinyl alcohol-based polymer is suitable to be used as a dispersant for suspension polymerization, to make the obtained polyvinyl chloride-based resin have reduced particle diameter and few coarse particles.

Modified polyvinyl alcohol-based polymer and its application

The present disclosure provides a method for fabricating a heterogeneous nickel-based catalyst on an aluminum oxide support. The method includes a solution preparation step, a drop-cast step, a first calcining step, and a second calcining step. The solution preparation step is provided for preparing a precursor solution. The drop-cast step is provided for dropping the precursor on the support. The first calcining step is provided for obtaining an oxidation state catalyst. The second calcining step is provided for obtaining the heterogeneous nickel-based catalysts on aluminum oxide support.

Method for fabricating heterogeneous nickel-based catalyst on aluminum oxide support, heterogeneous nickel-based catalyst on aluminum oxide support and method for synthesizing polyetheramine

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Taipei, Taiwan

Huan-Ming Chang