isobutylene

The influence of catalytic cracking temperature on the selectivity of isobutylene

催化裂化温度对异丁烯选择性的影响

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Adding water or tert-butyl alcohol to acetic acid can effectively restrain the isobutylene polymers generation and improve the selectivity of tert-butyl acetate.

在乙酸原料中添加一定比例水或者叔丁醇，均可有效地抑制异丁烯低聚物的生成，从而提高乙酸叔丁酯的选择性。

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2-tert-butylhydroquinone ( tbhq) was synthesized selectively from hydroquinone ( hq) and isobutylene by alkylation in the presence of catalyst h_3po_4 or h_2so_4-h_3po_4.the dosage of catalyst and charging method of hq were investigated.

以对苯二酚（HQ）和异丁烯为原料，在磷酸或硫酸-磷酸混合酸催化作用下进行烷基化合成2-叔丁基对苯二酚（TBHQ），探讨了催化剂种类及用量、加料方式对合成TBHQ选择性的影响。

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Synthesis of Isobutylene-based Polymers by Grafting from a Star-shaped Multifunctional Polymer; y delta connection

星形多官能团大分子接枝合成异丁烯系聚合物星形三角形连接法

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In this case, conversion of isobutylene can achieve 90%, selectivity of tert-butyl acetate can achieve 90% and selectivity of the polymers from isobutylene is less than 10%.

此时异丁烯转化率可达到90%，乙酸叔丁酯选择性可达到90%，低聚物选择性低于10%。

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The process comprises first oligomerizing isobutylene to diisobutylene using a sulfonic acid type ion exchange resin.

所述的方法包括首先异丁烯用磺酸型离子交换树脂低聚生成二聚异丁烯.

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Ionic polymerization of isobutylene was carried out by using F-K acid as a catalyst.

采用络合F-K酸作引发剂进行异丁烯阳离子聚合。

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Study of reaction mechanism and influential factor for isobutylene polymerization

异丁烯聚合反应机理及其影响因素探析

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Relatively, the method of adding tert-butyl alcohol to acetic acid is more effective than Adding water in improving the selectivity of TBA and reducing the selectivity of isobutylene to polymers.

采用加叔丁醇的方法对提高TBA选择性，降低异丁烯低聚物选择性更为有效。

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