公开(公告)号：US20050234164A1

公开(公告)日：2005-10-20

申请号：US11139150

申请日：2005-05-27

申请人： Vincent Notorgiacomo

发明人： Vincent Notorgiacomo

IPC分类号： C08K3/22 ,  C08K3/26 ,  C08K3/32 ,  C11D17/00

CPC分类号： C08K3/26 ,  C08K3/22 ,  C08K3/32

摘要： A molding composition exhibiting bleach resistance includes a polyoxymethylene matrix polymer, from about 0.5 to about 10 weight percent of a bleach stabilizer selected from alkali metal or alkaline earth element carbonates or phosphates and mixtures thereof dispersed in the matrix resin. A bleach co-stabilizer is selected from the group consisting of: (a) a poly(alkoxy) stabilizer; (b) a zinc oxide stabilizer; (c) a color stabilizer consisting of a mixture of calcium citrate and calcium propionate, wherein the calcium citrate is the predominant component of the color stabilizer mixture; or (d) mixtures of two or more of (a), (b) and (c). The compositions exhibit a bleach resistance index of at least 2.0.

公开(公告)号：US20060025507A1

公开(公告)日：2006-02-02

申请号：US10899281

申请日：2004-07-26

申请人： David Moore ,  Vincent Notorgiacomo

发明人： David Moore ,  Vincent Notorgiacomo

IPC分类号： C08L91/06

CPC分类号： C08L59/04 ,  C08L23/06 ,  C08L2666/06

摘要： A low wear polyoxymethylene composition includes a polyoxymethylene matrix resin; from about 0.05 to about 3 weight percent of a high molecular weight polyethylene having an intrinsic viscosity of from about 3.5 dl/g to about 35 dl/g, with the provisos that the high molecular weight polyethylene is further characterized by either: (i) an intrinsic viscosity of less than about 10 dl/g; or (ii) a particle size, d50, of less than about 50 microns as provided to the composition. The composition also includes an oxidized polyolefin wax; and optionally includes one or more of additional lubricants, reinforcing agents and stabilizers. The compositions are useful for tribological applications and are used to make bearings, gears, cams, rollers, sliding plates, conveyor belt links, castors, fasteners, levers and the like.

摘要翻译： 低磨耗聚甲醛组合物包括聚甲醛基体树脂; 约0.05至约3重量％的特性粘度为约3.5dl / g至约35dl / g的高分子量聚乙烯，条件是高分子量聚乙烯的进一步特征在于：（i） 特性粘度小于约10dl / g; 或（ii）提供至组合物的小于约50微米的粒径d <50％。 该组合物还包括氧化聚烯烃蜡; 并且任选地包括一种或多种另外的润滑剂，增强剂和稳定剂。 组合物可用于摩擦学应用，并用于制造轴承，齿轮，凸轮，滚子，滑板，输送带连杆，脚轮，紧固件，杠杆等。