Castable, curable composition for producing plastic molded articles
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United States of America Patent
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Jan 20, 1998
Grant Date -
N/A
app pub date -
Sep 20, 1996
filing date -
Mar 26, 1994
priority date (Note) -
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Abstract
In a castable, curable composition for producing plastic molded articles, comprising a sirup containing a proportion of acrylic acid monomer and/or derivatives thereof, in order to achieve an improved boiling resistance of the plastic molded articles produced from the composition, it is proposed that a proportion of a further component of the formula (I) ##STR1## which contains an ethylenically unsaturated group of the formula (II) --R.sub.5 --R.sub.6 (II) and/or contains a group of the formula (III) ##STR2## be added. The sirup may also optionally contain a proportion of a prepolymer, in particular PMMA, and, in addition, a particulate, inorganic filler in a proportion of 50 to 90% by weight in relation to the total composition, pigments and a radical initiator system are contained in the sirup. The viscosity of the total composition is .ltoreq.100 Pa.multidot.s, and the ratio of the sum of the weight content of the acrylic acid monomer and its derivatives to the sum of the weight content of the further component and the weight content of PMMA is 99:1 to 30:70, and, in the presence of PMMA, the ratio of the weight content of the further component to the weight content of the PMMA is at least 5:95.
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