Process for producing urethane (meth)acrylates and new urethane (meth)acrylates
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United States of America Patent
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Issued Date -
Aug 23, 2007
app pub date -
May 2, 2005
filing date -
May 17, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to urethane(meth)acrylates and to a process for their production which comprises transesterification of hydroxyalkyl carbamates with an (meth)acrylate of formula [CH.sub.2.dbd.CR.sup.29--CO--O--].sub.t--R.sup.30 wherein R.sup.29 is hydrogen or methyl, and R.sup.30 represents an alkyl, optionally substituted by hydroxy, which may contain from 1 to 10 ether bridges group, from 1 to 10 --CO-- bridges and/or from 1 to 5 --O--CO-- bridges, and at least one carbonate of formula (IX) and/or a diester of formula (X) wherein each R.sup.31, each R.sup.32, each R.sup.33, each R.sup.34 is, independently, chosen from the group of alkyl and aryl, and R.sup.35 is alkylene, alkenylene or arylene.
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