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1. 发明申请

WO1998017614A1 PROCESS FOR THE CONTINUOUS PRODUCTION OF NEOPENTYL GLYCOL 审中-公开
标题翻译：连续生产NEOPYYY GLYCOL的方法
公开(公告)号：WO1998017614A1
公开(公告)日：1998-04-30
申请号：PCT/KR1997000199
申请日：1997-10-22
申请人： LG CHEMICAL LIMITED , CHOI, Jung, Uk , JUNG, Seong, Moon , LEE, Kee, Hyouk , MOON, Ji, Joong , KIM, Young, Jin , MOON, Kwang, Ik
发明人： LG CHEMICAL LIMITED
IPC分类号： C07C31/20
CPC分类号： C07C45/80 , C07C29/141 , C07C45/75 , C07C45/82 , C07C47/19 , C07C31/20
摘要： A neopentyl glycol having a purity of 98 % or more is produced continuously by a process comprising the steps of: conducting an aldol condensation of isobutyraldehyde with an aqueous formaldehyde solution containing methanol in an amount of 0.1 to 15 wt.% in the presence of a tertiary alkylamine catalyst; extracting the condensation product mixture with octanol; distilling the extract; hydrogenating the distillation product; extracting the hydrogenation product mixture with water; and subjecting the extract to distillation.
摘要翻译：通过包括以下步骤的方法连续生产纯度为98％或更高的新戊二醇：在异氰酸酯与甲醇含量为0.1至15重量％的甲醛水溶液的存在下进行醛醇缩合叔烷基胺催化剂; 用辛醇萃取缩合产物混合物; 蒸馏提取物; 使蒸馏产物氢化; 用水萃取氢化产物混合物; 并对提取物进行蒸馏。

2. 发明申请

WO1998020057A1 A PROCESS FOR PRODUCING THERMOPLASTIC RESINS HAVING HIGH IMPACT STRENGTH 审中-公开
标题翻译：一种生产具有高冲击强度的热塑性树脂的方法
公开(公告)号：WO1998020057A1
公开(公告)日：1998-05-14
申请号：PCT/KR1997000213
申请日：1997-11-04
申请人： LG CHEMICAL LIMITED , LEE, Chan, Hong , KIM, Young, Min , YOO, Jin, Nyoung
发明人： LG CHEMICAL LIMITED
IPC分类号： C08F279/04
CPC分类号： C08F279/04
摘要： The present invention relates to a process for producing a thermoplastic resin having high impact strength and good surface gloss, which comprises graft copolymerizing at least a vinyl cyanide compound and at least an aromatic vinyl compound for a short period of less than about 3 hours in the presence of rubber latex having high gel content. The rubber latex can be a mixture of two or more rubber latices having different particle size. The graft copolymer has the characteristics such that the degree of the inner occlusion into the resin is decreased and the degree of surface grafting is increased. Thereby, the resulted thermoplastic resin has a very high impact strength and good surface gloss, and the processability is greatly improved. In addition, when the graft copolymer is polymerized the level of coagulum formation is greatly decreased.
摘要翻译：本发明涉及一种具有高冲击强度和良好表面光泽度的热塑性树脂的制造方法，该方法包括至少将乙烯基氰化合物和至少一种芳香族乙烯基化合物在少于约3小时内接枝共聚存在具有高凝胶含量的橡胶胶乳。橡胶胶乳可以是两种或更多种具有不同粒度的胶乳的混合物。接枝共聚物具有这样的特性，使得内部阻塞到树脂中的程度降低，并且表面接枝的程度增加。因此，所得到的热塑性树脂具有非常高的冲击强度和良好的表面光泽度，并且加工性大大提高。此外，当接枝共聚物聚合时，凝结物形成的水平大大降低。

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