公开(公告)号：US6433128B2

公开(公告)日：2002-08-13

申请号：US85578101

申请日：2001-05-16

申请人： MITSUBISHI GAS CHEMICAL CO

发明人： NAKAMURA TAKAHIRO ,  OKAMURA AKIRA ,  FURUKAWA MASANORI ,  MASUMOTO ISAMU ,  YOSHIOKA KANEO ,  MAJI KAZUMASA

IPC分类号： C08G2/10 ,  C08G6/00 ,  C08G10/02

CPC分类号： C08G2/10

摘要： A process for producing an oxymethylene copolymer by polymerizing trioxan and 1,3-dioxolan in the presence of a cationically active catalyst, wherein(1) 1,3-dioxolan is used in an amount of 0.01 to 2.9 mol % based on trioxan; and(2) the cationically active catalyst is used in an amount of 1x10-7 to 1.2x10-4 mol based on 1 mol of trioxan. The process of the present invention makes it possible to obtain at a high yield an oxymethylene copolymer which has almost as high mechanical strength and stiffness as an oxymethylene homopolymer while retaining the tenacity and heat stability of an oxymethylene copolymer.

摘要翻译： 一种在阳离子活性催化剂存在下聚合三氧杂环己烷和1,3-二氧戊环的甲醛共聚物的制备方法，其中（1）1,3-二氧戊环的用量相对于三烷为0.01〜2.9摩尔％ 和（2）阳离子活性催化剂的用量为1×10-7至1.2×10-4摩尔，相对于1摩尔的trioxan。 本发明的方法可以高效率地获得具有与甲醛均聚物几乎具有几乎相同的机械强度和刚度的甲醛共聚物，同时保持甲醛共聚物的强度和热稳定性。