公开(公告)号：US06359028B1

公开(公告)日：2002-03-19

申请号：US09383209

申请日：1999-08-26

申请人： Shinya Miya ,  Satoshi Kanayama ,  Ken Shimomai

发明人： Shinya Miya ,  Satoshi Kanayama ,  Ken Shimomai

IPC分类号： C08G6900

CPC分类号： C08K5/41 ,  C08K5/06 ,  C08L69/00 ,  C08L81/00 ,  C08L71/00

摘要： A polycarbonate resin composition according to the present invention is suited to be used for medical supplies or appliances and shows a very low yellow discoloration when exposed to an ionizing radiation for sterilization. The polycarbonate resin composition comprises 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of an aromatic compound containing oxy group or carbonyl group; and 0.01 to 5 parts by weight of at least one compound selected from the group consisting of: (A) a compound containing cyclic acetal group; (B) a sulfone compound; (C) a sulfoxide compound; (D) polyalkylene glycol, an ether of polyalkylene glycol or an ester of polyalkylene glycol; (E) a compound containing sulfonate group; and (F) an aromatic hydrocarbon-aldehyde resin.

摘要翻译： 根据本发明的聚碳酸酯树脂组合物适用于医疗用品或器具，并且当暴露于用于灭菌的电离辐射时显示出非常低的黄色变色。 聚碳酸酯树脂组合物包含100重量份的聚碳酸酯树脂; 0.01〜5重量份含有氧基或羰基的芳族化合物; 和0.01〜5重量份的选自以下的至少一种化合物：（A）含有环状缩醛基的化合物; （B）砜化合物; （C）亚砜化合物; （D）聚亚烷基二醇，聚亚烷基二醇的醚或聚亚烷基二醇的酯; （E）含磺酸基的化合物; 和（F）芳烃 - 醛树脂。

公开(公告)号：US06310173B1

公开(公告)日：2001-10-30

申请号：US09600312

申请日：2000-07-13

申请人： Ralf Mohrschladt ,  Volker Hildebrandt

发明人： Ralf Mohrschladt ,  Volker Hildebrandt

IPC分类号： C08G6900

CPC分类号： C08G69/16 ,  C08G69/00 ,  C08G69/04 ,  C08G69/08

摘要： The batch process for producing a polyamide by reaction of a mixture comprising at least one aminonitrile, and optionally monomers useful for polyamide production, with water, comprises the following steps: (1) reacting the mixture with water at a temperature from 90 to 400° C. and a pressure from 0.1 to 35×106 Pa to obtain a reaction mixture, (2) further reacting the reaction mixture at a temperature from 150 to 400° C. and a pressure which is lower than the pressure in step 1, the temperature and pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase, and the first gas phase is separated from the first liquid or the first solid phase or from the mixture of first liquid and first solid phase, and (3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water at a temperature from 150 to 370° C. and a pressure from 0.1 to 30×106 Pa to obtain a product mixture, wherein step (1) is carried out in the presence of a Brönsted acid catalyst selected from a beta-zeolite catalyst, a sheet-silicate catalyst or a fixed bed catalyst consisting essentially of TiO2 comprising from 70 to 100% by weight of anatase and from 0 to 30% by weight of rutile and in which up to 40% by weight of the titanium dioxide may be replaced by tungsten oxide, and steps (2) and (3) may be carried out in the presence of this catalyst.

摘要翻译： 通过包含至少一种氨基腈和任选的可用于聚酰胺生产的单体的混合物与水反应制备聚酰胺的分批方法包括以下步骤：（1）使混合物与水在90至400℃的温度下反应 并且压力为0.1至35×10 6 Pa以获得反应混合物，（2）使反应混合物在150-400℃的温度和低于步骤1中的压力的​​压力下进一步反应， 选择压力以获得第一气相和第一液体或第一固体相或第一固体和第一液相的混合物，并且第一气相与第一液体或第一固相或第一固相 第一液体和第一固相的混合物，和（3）在150至370℃的温度下将第一液体或第一固相或第一液体和第一固相的混合物与包含水的气相或液相混合。 和 压力为0.1至30×10 6 Pa，以获得产物混合物，其中步骤（1）在选自β-沸石催化剂，片状硅酸盐催化剂或固定床催化剂的布朗斯台德酸催化剂存在下进行，所述催化剂基本上由 TiO 2包含70-100重量％的锐钛矿和0-30重量％的金红石，其中至多40重量％的二氧化钛可被氧化钨代替，步骤（2）和（3） 可以在该催化剂的存在下进行。