公开(公告)号：US06576740B1

公开(公告)日：2003-06-10

申请号：US10031124

申请日：2002-01-09

申请人： Chong-Won Chin ,  Young-Heup Kim ,  Kyung-Seob Byun

发明人： Chong-Won Chin ,  Young-Heup Kim ,  Kyung-Seob Byun

IPC分类号： C08F600

CPC分类号： C08G2/06 ,  C08G2/28

摘要： A polyoxymethylene having enhanced thermal stability and resistance to depolymerization is obtained by using an alkylated melamine compound of formula (1) as a polymerization terminating agent in a polymerization of formaldehyde or a cyclic oligomer thereof and an optional comonomer in the presence of an acid catalyst: wherein, R1 to R6 are each independently H, C1-4 alkyl or CH2OR7; R7 is H, C1-4 alkyl or R8COOR9; R8 is —(CH2)n—, n being an integer of 1 to 4; and R9 is C1-4 alkyl.

摘要翻译： 通过在甲酸或其环状低聚物和任选的共聚单体的聚合反应中，在酸催化剂存在下，使用式（1）的烷基化三聚氰胺化合物作为聚合终止剂获得具有增强的热稳定性和抗解聚性的聚甲醛： 其中，R 1至R 6各自独立地为H，C 1-4烷基或CH 2 OR 7; R7是H，C1-4烷基或R8COOR9; R8为 - （CH2）n-，n为1〜4的整数， 且R 9为C 1-4烷基。

公开(公告)号：US20050043492A1

公开(公告)日：2005-02-24

申请号：US10496293

申请日：2002-11-21

申请人： Chong-Won Chin ,  Young-Heup Kim ,  Kyyung-Seob Byun ,  Tae-Woong Lee ,  Dong-Sik Kim ,  Oh-Eui Kwon ,  Hwa-Yong Lee ,  Jun-Eun Shin

发明人： Chong-Won Chin ,  Young-Heup Kim ,  Kyyung-Seob Byun ,  Tae-Woong Lee ,  Dong-Sik Kim ,  Oh-Eui Kwon ,  Hwa-Yong Lee ,  Jun-Eun Shin

IPC分类号： C08K5/1539 ,  C08L59/00 ,  C08L75/04 ,  C08L75/06 ,  C08L71/02

CPC分类号： C08L75/06 ,  C08K5/1539 ,  C08L59/00 ,  C08L2666/20 ,  C08L35/00 ,  C08L2666/16

摘要： Disclosed is a polyxymethylene composite resin composition, including 40-99 parts by weight of a polyoxymethylene resin, and 1-60 parts by weight of a thermoplastic polyurethane resin containing 0.05-1 part by weight of an active isocyanate, with selective addition of 0.01-5 parts by weight of a compound containing maleic anhydride, which is advantageous in terms of generation of no carbides upon preparation thereof, excellent strength and elongation in a weld line, and superior formability. An article prepared from the polyxymethylene composite resin composition is also provided.

摘要翻译： 公开了一种聚甲醛复合树脂组合物，其包含40-99重量份的聚甲醛树脂和1-60重量份含有0.05-1重量份活性异氰酸酯的热塑性聚氨酯树脂，选择性加入0.01- 5重量份含有马来酸酐的化合物，其在制备时无碳化物的产生方面是有利的，优异的熔合线强度和伸长率以及优异的成形性。 还提供了由聚甲醛复合树脂组合物制备的制品。