公开(公告)号：US5043118A

公开(公告)日：1991-08-27

申请号：US452166

申请日：1989-12-18

Applicant: Hongkyu Kim ,  George L. Collins ,  O. Richard Hughes

Inventor： Hongkyu Kim ,  George L. Collins ,  O. Richard Hughes

IPC: C04B35/634 ,  C04B35/80 ,  C08K3/00 ,  C08K9/08

CPC classification number: C04B35/6342 ,  C04B35/634 ,  C04B35/80 ,  C08K3/0033 ,  C08K9/08 ,  Y10T428/2918 ,  Y10T428/2933

Abstract: An injection moldable ceramic composition is prepared by mixing a sinterable powder, a polyacetal binding agent and silicon carbide whiskers which have been coated with a polyacetal resin.

Abstract translation: 通过将可熔融粉末，聚缩醛粘合剂和已经被聚缩醛树脂涂覆的碳化硅晶须混合来制备注射成型陶瓷组合物。

公开(公告)号：US4937312A

公开(公告)日：1990-06-26

申请号：US448746

申请日：1989-12-11

Applicant: George L. Collins ,  Kurt F. Wissbrun ,  Hongkyu Kim

Inventor： George L. Collins ,  Kurt F. Wissbrun ,  Hongkyu Kim

IPC: C08G2/18

CPC classification number: C08G2/18

Abstract: There are provided new elastomeric copolymers of about 15 to 45 mol %, preferably about 25 to 35 mol % trioxane, about 55 to 85 mol %, preferably about 65 to 75 mol % of 1,3-dioxolane, said mol percents based on the total of trioxane and 1,3-dioxolane, and about 0.005 to 0.15 wt. %, preferably about 0.05 to 0.12 wt. % of 1,4-butanediol diglycidyl ether or butadiene diepoxide as a bifunctional monomer, based on the total weight of copolymer. The elastomeric copolymers may be prepared by mixing said monomers in a substantially dry state and under an inert atmosphere with a cationic polymerization catalyst, e.g., p-nitrobenzenediazonium tetrafluoroborate. The elastomeric copolymers have a strong interaction with moldable, crystalline acetal polymers comprising at least 85 mol % of polymerized oxymethylene units and may be used as a blending agent with such crystalline acetal polymers or as a bonding agent to improve the adhesiveness of the crystalline acetal polymer to other materials.

Abstract translation: 提供了约15至45摩尔％，优选约25至35摩尔％三恶烷，约55至85摩尔％，优选约65至75摩尔％的1,3-二氧戊环的新的弹性体共聚物，所述摩尔百分比基于 三恶烷和1,3-二氧戊环的总量，以及约0.005至0.15wt。 ％，优选约0.05至0.12wt。 ％的1,4-丁二醇二缩水甘油醚或丁二烯二环氧化物作为双功能单体，基于共聚物的总重量。 弹性体共聚物可以通过将基本上干燥的状态和惰性气氛下的所述单体与阳离子聚合催化剂如对硝基苯基氮鎓四氟硼酸盐混合来制备。 弹性体共聚物与包含至少85摩尔％的聚合甲醛单元的可模塑的结晶缩醛聚合物具有强相互作用，并且可以用作与这种结晶缩醛聚合物或粘合剂的共混剂，以改善结晶缩醛聚合物的粘合性 到其他材料。