- 专利标题: Production of TPO roofing membrane via counter-rotating extrusion
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申请号: US14649749申请日: 2013-12-23
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公开(公告)号: US09987786B2公开(公告)日: 2018-06-05
- 发明人: Aleksandar Stoiljkovic , Stefan Ultsch , Xiaosong Wu
- 申请人: Dow Global Technologies LLC
- 申请人地址: US MI Midland
- 专利权人: Dow Global Technologies LLC
- 当前专利权人: Dow Global Technologies LLC
- 当前专利权人地址: US MI Midland
- 代理机构: Husch Blackwell LLP
- 国际申请: PCT/US2013/077450 WO 20131223
- 国际公布: WO2014/105809 WO 20140703
- 主分类号: B29C47/40
- IPC分类号: B29C47/40 ; B29C47/10 ; E04D5/06 ; B29K23/00 ; B29K105/00 ; B29L31/10 ; B29C47/00 ; B29B7/48 ; B29B7/88
摘要:
The present disclosure is directed to a process for producing thermoplastic polyolefin roofing membrane. The process includes directly adding components of a high-load flame retardant TPO formulation to a counter-rotating twin screw extruder. The process includes extruding the formulation with counter-rotation of the twin screws and forming a TPO roofing membrane having a tensile strength of greater than 10 MPa and a flame retardance of rating of classification D as measured in accordance with EN ISO 1 1925-2, surface exposure test.