公开(公告)号：US4299947A

公开(公告)日：1981-11-10

申请号：US158559

申请日：1980-06-11

申请人： Motoyuki Nanjo ,  Tsutomu Watanabe ,  Shigeru Koshibe ,  Keiji Azuma

发明人： Motoyuki Nanjo ,  Tsutomu Watanabe ,  Shigeru Koshibe ,  Keiji Azuma

IPC分类号： C08G8/04 ,  C08G8/10

CPC分类号： C08G8/04

摘要： A high-ortho phenolic novolac resin having excellent curability, heat stability and flowability can be produced safely at low cost by a process which comprises reacting a phenol and an aldehyde at a temperature of more than 100.degree. C. with (A) a catalyst effective for the addition reaction selected from the salts of divalent metals in combination with (B) a catalyst effective for the condensation reaction, or comprises reacting a phenol and an aldehyde under reflux in the presence of the catalyst (A), adding an acid to adjust the pH to 1-5, removing water under reduced pressure and then subjecting the product to reaction at a temperature of more than 100.degree. C. This process enables the addition reaction and the condensation reaction to proceed with a good balance, can solve problems arising in the prior process such as gelation, low yield and the like, and can produce a high-ortho type phenolic novolac resin safely at low cost. Accordingly, this process is quite advantageous in industry.

摘要翻译： 可以通过包括使苯酚和醛在大于100℃的温度下反应的方法以低成本安全地制备具有优异固化性，热稳定性和流动性的高邻苯酚酚醛清漆树脂（A）催化剂有效 对于选自二价金属的盐的加成反应与（B）对于缩合反应有效的催化剂组合，或者包括在催化剂（A）的存在下，在回流下使苯酚和醛反应，加入酸来调节 pH至1-5，减压除水，然后在大于100℃的温度下使产物反应。该方法使加成反应和缩合反应进行良好的平衡，可以解决产生的问题 在以前的方法如凝胶化，低产率等中，可以以低成本安全地生产高邻苯酚酚醛清漆树脂。 因此，这个过程在工业上是相当有利的。

公开(公告)号：US4297473A

公开(公告)日：1981-10-27

申请号：US148104

申请日：1980-05-09

申请人： Shigeru Koshibe ,  Motoyuki Nanjo

发明人： Shigeru Koshibe ,  Motoyuki Nanjo

IPC分类号： C08G8/00 ,  C08G8/04 ,  C08L63/00 ,  C08G8/10

CPC分类号： C08G8/04 ,  C08L63/00

摘要： Disclosed herein is a novel high-ortho phenolic novolac resin having excellent quick-curing property and thermal stability for use as phenolic resin molding material and perfectly free of divalent metal salt which is detrimental to the electrical properties of the molding material. This resin can be obtained by condensing a phenol and an aldehyde in an aldehyde/phenol molar ratio ranging from 0.6 to 1.0 and at a reaction temperature of more than 100.degree. C. at which the selectivity for condensation at the para-position is lowered (that is, the probability of the condensation at the ortho-position increases), with a weakly acidic catalyst having a specified dissociation constant (pKa value). The high-ortho phenolic novolac resin (having the specific molecular weight and ortho/para linkage ratio) obtained from said reaction is very useful for industrial applications as a phenolic injection molding material or epoxy/phenolic low-pressure encapsulation molding material with excellent electrical properties.

摘要翻译： 本文公开了一种新型的高邻苯酚酚醛清漆树脂，其具有优异的快速固化性和热稳定性，用作酚醛树脂成型材料，并且完全不含有对成型材料的电性能不利的二价金属盐。 该树脂可以通过将酚和醛以0.6至1.0的醛/苯酚摩尔比和大于100℃的反应温度冷凝，从而降低对位冷凝选择性（ 也就是说，邻位缩合的概率增加），具有指定解离常数（pKa值）的弱酸性催化剂。 从所述反应获得的高邻苯酚酚醛清漆树脂（具有特定分子量和邻位/对位连接比）对于工业应用非常有用，作为具有优异电性能的酚醛注塑材料或环氧/酚醛低压封装模塑材料 。

公开(公告)号：US06579160B2

公开(公告)日：2003-06-17

申请号：US09900051

申请日：2001-07-09

申请人： Motoyuki Nanjo ,  Kouji Uchihata ,  Akihiko Uzawa ,  Kuniyuki Kanai

发明人： Motoyuki Nanjo ,  Kouji Uchihata ,  Akihiko Uzawa ,  Kuniyuki Kanai

IPC分类号： B24B500

CPC分类号： B24B37/08 ,  B24B41/067

摘要： The inner circumferential surface of through holes in a metal plate is chamfered or put to anchor fabrication and a thermoplastic resin is injection molding to the inner circumferential surface of the through hole thereby forming a resin portion over the entire surface of the through hole and the resin portion is removed by grinding while leaving the peripheral portion of the resin portion thereby forming a polished work holding hole. Thus, when a resin portion is formed to the inner circumference of the holding hole in a polished work holder comprising a metal plate, the production is high and the cost is reduced, and the resin portion is not detached from the bonding portion with no use of the adhesive.