Process for preparing alkylene glycols
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United States of America Patent
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N/A
Issued Date -
Sep 7, 2006
app pub date -
Mar 1, 2006
filing date -
Mar 1, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a process for preparing alkylene glycols by hydration of alkylene oxides in the presence of polyalkylene glycol dialkyl ethers of the formula R.sup.1--O--[--(CH.sub.2CH.sub.2O).sub.m(CH(CH.sub.3)CH.sub.2)--O].sub.n---R.sup.2 in which m=0-100, n=0-100, where n+m is at least equal to 1, R.sup.1 is a C.sub.1- to C.sub.6-alkyl radical, R.sup.2 is a C.sub.1- to C.sub.6-alkyl radical, where R.sup.2 may be different from R.sup.1, with the proviso that for at least 50 mol % of the polyalkylene glycol dialkyl ether m+n is greater than or equal to 11.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
CLARIANT GMBH | BRUNINGSTRASSE 50 D-65929 FRANKFURT AM MAIN |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Holzhauser, Erwin | Ganghofen, DE | 4 | 9 |
# of filed Patents : 4 Total Citations : 9 | |||
Snell, Alexander | Altoetting, DE | 13 | 13 |
# of filed Patents : 13 Total Citations : 13 | |||
Stankowiak, Achim | Altoetting, DE | 32 | 163 |
# of filed Patents : 32 Total Citations : 163 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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