公开(公告)号：US4469817A

公开(公告)日：1984-09-04

申请号：US442668

申请日：1982-11-18

申请人： Keizo Hayashi ,  Atsushi Sumida ,  Teruo Murayama ,  Tomio Minobe

发明人： Keizo Hayashi ,  Atsushi Sumida ,  Teruo Murayama ,  Tomio Minobe

IPC分类号： C08J11/00 ,  B29B13/00 ,  B29B13/02 ,  B29B17/00 ,  C08J11/12

CPC分类号： C08J11/12 ,  B29B13/02 ,  B29B17/00 ,  B29K2021/00 ,  C08J2321/00 ,  Y02W30/62 ,  Y02W30/703

摘要： Reclamation of vulcanized rubber is effected by a method which comprises heating powdered vulcanized rubber to a temperature for desulfurization of the rubber and, on completion of the desulfurization, quickly cooling the desulfurized rubber to a temperature at which substantially no oxidation of desulfurized rubber proceeds. This method obviates otherwise indispensable incorporation of process oil or other similar additive to the powdered vulcanized rubber for the purpose of retarding the oxidation of rubber molecules. When the reclaimed rubber obtained by this method is blended with newly supplied rubber, the resultant vulcanized rubber shows sparing degradation of physical properties.

摘要翻译： 硫化橡胶的回收是通过将硫化橡胶加热至橡胶脱硫的温度来进行的，在脱硫完成时迅速将脱硫橡胶冷却至基本上不脱硫硫化橡胶的温度。 为了阻止橡胶分子的氧化，该方法避免了与粉末状硫化橡胶不同的工艺油或其它类似添加剂的不可或缺的组合。 当通过该方法获得的再生橡胶与新供应的橡胶混合时，得到的硫化橡胶显示出物理性能的降低。