发明授权
- 专利标题: Process for plasticizing polyvinyl alcohol resin
- 专利标题(中): 聚乙烯醇树脂增塑方法
-
申请号: US166863申请日: 1988-03-11
-
公开(公告)号: US4849256A公开(公告)日: 1989-07-18
- 发明人: Garry F. Newman , Dean F. Carson , Steve B. Cherry
- 申请人: Garry F. Newman , Dean F. Carson , Steve B. Cherry
- 申请人地址: CA Oakland
- 专利权人: The Clorox Company
- 当前专利权人: The Clorox Company
- 当前专利权人地址: CA Oakland
- 主分类号: C08J3/12
- IPC分类号: C08J3/12 ; C08J3/18 ; C08L29/04
摘要:
An improved method for the production of a plasticizer-containing dry flowable polyvinyl alcohol (PVA) resin blend capable of thermoplastic processing. The method provides for the incorporation of plasticizers in intimate contact with the PVA resin without heating, cooling, or extended drying steps. Specifically, PVA resin granules having an appropriately small particle size distribution are spray-coated with a liquid plasticizer medium, and then mixed with a dry, fine powder coating medium to produce a flowable, dry plasticized PVA blend. Additional components, such as antioxidants, dyes, and antiblocking agents, may also be incorporated into the finished product.
信息查询