(Meth)acrylate, raw material alcohol for the (meth)acrylate,...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

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Details

C526S271000, C526S281000, C526S282000, C526S283000, C526S284000, C526S320000

Reexamination Certificate

active

10974876

ABSTRACT:
A (meth)acrylate represented by the following formula (1):wherein each of R1, R2, R3and R4represents a hydrogen atom, a methyl group or an ethyl group; either one of X1or X2represents a (meth)acryloyloxy group and the other represents a hydrogen atom; both A1and A2represent hydrogen atoms, or A1and A2form —O—, —CH2— or —CH2CH2—, which can be produced by first producing a lactone by reducing an addition product obtained by the Diels-Alder reaction between 1,3-diene and maleic anhydride, and then hydrating the lactone to produce an alcohol followed by (meth)acrylation of the alcohol; a polymer produced by (co)polymerizing a monomer composition comprising the (meth)acrylate of the present invention is excellent in transparency, dry etching resistance, and solubility in organic solvents, and so it is preferably used as a resin for a chemically amplified resist composition.

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Kenji Mori et al.: “Synthetic microbial chemistry. XXV. Synthesis of the enantiomers of differolide [4-(2′,5′-dihydro-2′-oxo-3′furanyl)-3a,4,5,6-tetrahydro-1(3H)-isobenzofuranone], a microbial bioregulator for the formation of aerial mycelium and spores of streptomyces glaucescens” Liebigs Ann. Chem., vol. 6, pp. 671-681, compound 6, 1993.
Atsushi Numata et al.: “Synthesis of pyrolysis products of bisdehydrodihydroenmein. I. Synthesis of 6-hydroxy-7-methylphthalide and 2-(hydroxymethyl)-6,6-dimethyl-5-oxo-1-cyclohexenecarboxylic acid lactone” Yakugaku Zasshi, vol. 88, No. 9, pp. 1151-1162, 1968.

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