发明名称 |
Method for making a polyurea-polyurethane composite structure substantially free of volatile organic compounds |
摘要 |
A method of making a polyurea-polyurethane composite structure that is substantially free from emission of volatile organic compounds is disclosed. The composite structure produced according to the method of the subject invention has a flexural modulus of at least 200,000 lb/in<2>. The composite structure includes first and second layers. A mold substrate is provided and a first-layer polyisocyanate component and a first-layer resin component are reacted and sprayed onto the mold substrate to form the first-layer. The first-layer polyisocyanate component includes an aliphatic polyisocyanate, and the first-layer resin component includes a polyamine thereby forming a polyurea show surface having a Shore D hardness of at least 65. After application of the first-layer, a second-layer polyisocyanate component and a second-layer resin component are reacted and sprayed behind the first-layer to form the second-layer of the composite structure. The second layer resin component more specifically includes a polyol having a theoretical functionality of at least three. The first and second layers of the composite are substantially free of VOCs.
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申请公布号 |
US6841111(B2) |
申请公布日期 |
2005.01.11 |
申请号 |
US20010944561 |
申请日期 |
2001.08.31 |
申请人 |
BASF CORPORATION |
发明人 |
RICKNER STEPHEN;JIBRAIL JOSEPH;CAMBA JOSE;VELASCO, JR. CARLOS;PEELER CALVIN;MAY MICHAEL |
分类号 |
B29C41/00;B29C41/22;(IPC1-7):B29C45/16 |
主分类号 |
B29C41/00 |
代理机构 |
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