- PROCESS FOR PREPARING HEONONE (METH)ACRYLATE
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The invention relates to a process for preparing heonone (meth)acrylate by transesterification of alkyl (meth)acrylate with heonone, which comprises the steps: (i) reaction of alkyl (meth)acrylate with heonone in the presence of a catalyst comprising titanium(IV) or zirconium(IV) and a stabilizer in the presence of an entrainer which forms an azeotrope with the alcohol bound in the alkyl (meth)acrylate,(ii) continuous removal by distillation of the azeotrope of entrainer and alcohol, with steps (i) and (ii) being carried out simultaneously until heonone has been essentially completely reacted,(iii) addition of water to the product mixture comprising heonone (meth)acrylate obtained in steps (i) and (ii) and removal of the hydrolyzate of the catalyst comprising titanium(IV) or zirconium(IV) by filtration,(iv) distillation of unreacted alkyl (meth)acrylate and entrainer from the product mixture,(v) distillation of water from the product mixture, with step (iv) also being able to be carried out before step (iii) and steps (iv) and (v) also being able to be carried out in a distillation step, wherein steps (i) and (ii) are carried out in the presence of an inorganic or organic acid.
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Paragraph 0051-0052
(2016/06/28)
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- CYCLIC CARBAMATE COMPOUNDS USEFUL IN ENERGY-CURABLE COMPOSITIONS
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Cyclic carbamate functional compounds, which are the reaction product of a cyclic carbamate having an acrylate functional group, such as N-(2- acryloyloxyethyl)oxazolidinone, with aliphatic amine compounds, said cyclic carbamate functional compounds being useful as oxygen scavengers in energy-curable compositions, such as inks, coatings and adhesives, that comprise (a) the cyclic carbamate functional compound, (b) reactive monomers and/or oligomers and, optionally, (c) a photoinitiator.
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Page/Page column 18-19
(2010/10/03)
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