发明名称 |
FOAMED PHENOL-UREA-FORMALDEHYDE CONDENSATION PRODUCT |
摘要 |
<p>This invention relates to cellular plastic compositions of condensation products of phenol-urea and formaldehyde useful for thermal and acoustical insulation and methods for their preparation in which the phenol is present in amounts of about 1 to about 20 percent by weight wherein the condensation product prior to foaming and setting as a rigid cellular plastic has a viscosity at room temperature of approximately 30 to 36 seconds, No. 1 Zahn cup, and a pH maintained in the range of about 6 to 8.</p> |
申请公布号 |
CA1078998(A) |
申请公布日期 |
1980.06.03 |
申请号 |
CA19750232404 |
申请日期 |
1975.07.28 |
申请人 |
C.P. CHEMICAL COMPANY, INC. |
发明人 |
HASSELMAN, WALTER J. (JR.) |
分类号 |
C08G14/08;C08J9/00;C08L61/34;(IPC1-7):08G14/08;08L61/34;08J9/00 |
主分类号 |
C08G14/08 |
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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