Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2006-02-16
2010-02-09
Parsa, Jafar (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C560S093000, C560S200000
Reexamination Certificate
active
07659425
ABSTRACT:
The present invention relates to a process for preparing hydroxyalkyl (meth)acrylates by reacting at least one compound A which contains at least one epoxide group with at least one compound B which contains at least one carboxylic acid group, wherein A and/or B also contains at least one (meth)acrylate group, in the presence of Lewis acid catalysts, each of which contains at least one directly bonded di(cyclo)alkylamino group.
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Database CA [Online] Chemical Abstracts Service, Columbus, Ohio, US; Kimura, Kaoru et al: “Acrylate and methacrylate esters” XP002381405 gefunden im STN Database accession No. 1977:73371 * Zusammenfassung * & JP 51 086413 A (Toa Gosei Chemical Industry Co., Ltd., Japan) Jul. 29, 1976.
Analytical Sciences, vol. 17, Nov. 2001, pp. 1295-1299, Morikatsu Matsunaga et al, “Optimization of Conditions for Detailed Compositional Analysis of Acrylic Oligomers by Supercritical Fluid Chromatography with Temperature Programming or Modifier Gradient Technique”.
Polymer, vol. 37, No. 20, (month unavailable) 1996, pp. 4629-4631, Michael A. Beckett et al, “Polymer Communications—A convenient n.m.r. method for the measurement of Lewis acidity at boron centres: correlation of reaction rates of Lewis acid initiated epoxide polymerizations with Lewis acidity”.
Gürtler Christoph
Weikard Jan
Bayer MaterialScience AG
Cheung Noland J.
Klemz Robert S.
Parsa Jafar
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