Double metal cyanide catalysts
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United States of America Patent
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Dec 7, 1999
Issued Date -
N/A
app pub date -
Nov 11, 1998
filing date -
Jul 18, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Double metal cyanide catalysts, prepared by drying a catalyst slurry by a non-agglomerative drying method such as spray drying or freeze drying, directly produces catalyst particles of fine particle size such that intensive grinding is not required. The catalysts thus produced are different from conventionally dried particles in that polyoxyalkylation may be conducted with less reactor fouling and a polyoxyalkylene product of lower unsaturation and narrower polydispersity may be obtained.
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Patent Citation Ranking
- 3 Citation Count
- C07C Class
- 15.47 % this patent is cited more than
- 26 Age