专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明授权

US5922257A Process to produce an article that has a granite-like appearance and said article 失效
标题翻译：制造具有花岗岩状外观的物品和所述制品的方法
公开(公告)号：US5922257A
公开(公告)日：1999-07-13
申请号：US925988
申请日：1997-09-09
申请人： James E. Keesling
发明人： James E. Keesling
IPC分类号： B29C47/04
CPC分类号： B29C47/046 , B29C47/0016 , B29C47/0021 , B29C47/0023 , B29K2995/0021 , Y10T428/254 , Y10T428/2982
摘要： A process to produce an article having a granite-like appearance is disclosed which consists essentially of (a) extruding a first mixture to form a second mixture; and (b) using the second mixture to form an article having a granite-like appearance. The first and second mixtures are in the form of particles where the first mixture consists essentially of about 99 to about 90 wt. % of a first particle composition and about 1 to about 10 wt. % of a second particle composition. The first particle composition consists essentially of a first polymer which consists essentially of a thermoplastic (co)polymer of ethylene and the second particle composition consists essentially of a colorant and a second polymer which consists essentially of a crosslinked thermoset (co)polymer of ethylene. The second polymer does not have a density which is substantially isopycnic compared to the first polymer Extrusion is performed at a temperature above the melting point of the first polymer but below the melting point of the second polymer and the decomposition temperature of the first polymer. In preferred embodiments, the first polymer is a copolymer of ethylene and hexene having a density of 0.880 to 0.952 g/cm.sup.3 and the second polymer is a copolymer of ethylene and hexene having a density of less than 0.941 g/cm.sup.3 or greater than 0.946 g/cm.sup.3, or the first polymer is a copolymer of ethylene and hexene having a density greater than 0.958 g/cm.sup.3 and the second polymer is a copolymer of ethylene and hexene having a density less than 0.941 g/cm.sup.3.
摘要翻译：公开了一种生产具有花岗岩样外观的制品的方法，其基本上由（a）挤出第一混合物以形成第二混合物; 和（b）使用第二混合物形成具有花岗岩样外观的制品。第一和第二混合物是颗粒的形式，其中第一混合物基本上由约99至约90wt。％的第一颗粒组合物和约1至约10wt。％的第二颗粒组合物。第一颗粒组合物基本上由基本上由乙烯的热塑性（共）聚合物组成的第一聚合物组成，第二颗粒组合物基本上由着色剂和基本上由乙烯的交联的热固性（共）聚合物组成的第二聚合物组成。第二聚合物不具有与第一聚合物基本相同的密度。挤出是在高于第一聚合物的熔点但低于第二聚合物的熔点的温度下进行的，以及第一聚合物的分解温度。在优选的实施方案中，第一聚合物是密度为0.880至0.952g / cm3的乙烯和己烯的共聚物，第二聚合物是密度小于0.941g / cm 3或大于0.946g的乙烯和己烯的共聚物或者第一聚合物是密度大于0.958g / cm 3的乙烯和己烯的共聚物，第二聚合物是密度小于0.941g / cm 3的乙烯和己烯的共聚物。

IPRDB

热门服务

关于我们

友情链接

联系方式