发明授权
- 专利标题: Use of bisphenol a tar in furan no-bake foundry binders
- 专利标题(中): 在呋喃无烘烤铸造粘合剂中使用双酚焦油
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申请号: US583178申请日: 1996-01-04
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公开(公告)号: US5856375A公开(公告)日: 1999-01-05
- 发明人: Ken K. Chang , Michael C. Clingerman , Michelle L. Lott , James T. Schneider
- 申请人: Ken K. Chang , Michael C. Clingerman , Michelle L. Lott , James T. Schneider
- 申请人地址: OH Columbus
- 专利权人: Ashland, Inc.
- 当前专利权人: Ashland, Inc.
- 当前专利权人地址: OH Columbus
- 主分类号: B22C1/22
- IPC分类号: B22C1/22
摘要:
Broadly, the present invention relates to furan no-bake foundry binders where bisphenol A tar (BPAT) is used to replace a portion of the furfuryl alcohol and any conventional filler optionally included in for binder formulation. Reduction in the amount of furfuryl alcohol in the foundry binder formulation may lead to a reduction in the cost and an improvement in early strength of these formulations. Accordingly, in a furan no-bake foundry binder of a resin derived from a major proportion of furfuryl alcohol and optionally fillers, the improvement which comprises at least a fraction of said furfuryl alcohol being bisphenol A tar. Bisphenol A tar also can replace at least a fraction of any filler included in the binder formulation.
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