发明名称 |
POLYOLEFINHARZROHRE FUER DIE VERWIRKLICHUNG VON ROHRLEITUNGEN, MUFFE ZU IHREM ZUSAMMENFUEGEN UND VERFAHREN ZU IHRER HERSTELLUNG. |
摘要 |
The invention relates to the concept and the manufacture of pipes made of polyolefin resin, intended to constitute pipelines of great lengths, by assembly using heat-weldable sleeves 3. Each of the pipes 1 and 2 consists of a wall of cylindrical tubular shape, which comprises two coaxial layers of plastic: a core 4 on the inner side and a surface layer 5 on the outer side. The core consists of a first material resulting from the crosslinking in a moist atmosphere of a composition based on a polyolefin resin grafted by reaction with a monomer bearing at least one hydrolysable group in order to give rise to condensation reactions, such as an unsaturated alkoxysilane. The surface layer consists of a second material comprising essentially a polyolefin resin in thermoplastic form and capable of being heat-welded to itself. <IMAGE> |
申请公布号 |
AT79935(T) |
申请公布日期 |
1992.09.15 |
申请号 |
AT19880400865T |
申请日期 |
1988.04.11 |
申请人 |
SOCIETE ALPHACAN |
发明人 |
BOURJOT, PIERRE;GARNAUD, MARIE-ANNE |
分类号 |
B29C45/00;B29C47/00;B29C57/00;B29C65/00;B29C65/34;F16L47/02;F16L47/03 |
主分类号 |
B29C45/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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