PROCESS FOR PRODUCING A POLYCARBONATE RESIN EXTRUDED FOAM, AND POLYCARBONATE RESIN EXTRUDED FOAM
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United States of America Patent
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Issued Date -
Mar 1, 2012
app pub date -
Aug 26, 2011
filing date -
Aug 31, 2010
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Abandoned
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Abstract
The present invention relates to a process for producing a polycarbonate resin extruded foam including a process of kneading, together with a blowing agent, and a mixture in which 5 to 100 parts by weight of a polyester copolymer, this resin including diol component units which contain therein glycol component units having a cyclic ether structure in an amount of 25 to 50% by mole of the diol component units and dicarboxylic acid component units, are blended into 100 parts by weight of a polycarbonate resin, thereby preparing a foamable melted resin, and then extruding and foaming the foamable melted resin. The polycarbonate resin extruded foam of the invention is high in mechanical strengths, small in thermal conductivity, and very good in thermal insulation properties over a long term, and can be preferably used for architecture articles such as light structural material or a heat insulating material.
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