发明名称 |
Process for hydrotreating resins to lighten color |
摘要 |
The color of hydrocarbon resins having carbon-carbon double bonds and containing color bodies is lightened by a hydrotreating process consisting essentially of contacting the resin with hydrogen at a hydrogen pressure of 1 to about 20 bar (14.5 to about 290 psi) in the presence of a catalyst that promotes the hydrogenation of the color bodies without substantially changing the softening point or the content of carbon-carbon double bonds in the resin. The preferred catalyst is nickel/zinc oxide on SiO2.
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申请公布号 |
US5817900(A) |
申请公布日期 |
1998.10.06 |
申请号 |
US19960595115 |
申请日期 |
1996.02.01 |
申请人 |
HERCULES INCORPORATED |
发明人 |
BERREVOETS, ERIK;VAN DRONGELEN, JAN |
分类号 |
C08F6/02;C08F6/00;C08F6/28;C08F8/04;C08J9/36;(IPC1-7):C08F6/24 |
主分类号 |
C08F6/02 |
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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