Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1995-05-01
1997-06-03
Buttner, David
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524425, 524426, 521 405, 521 465, 525207, C08K 326, C08J 1106
Patent
active
056355564
ABSTRACT:
A heat resistant polymer such as a styrene maleic anhydride copolymer which has been contaminated with a minor amount of a vinyl chloride polymer such as polyvinyl chloride may be stabilized sufficiently by incorporation of calcium carbonate to allow contaminated heat resistant polymer reclaimed in this manner to match the performance of non-contaminated heat resistant polymer. Instrument panels comprising such heat resistant polymers and polyvinyl chloride polymers may thus be readily recycled and reused to form new molded articles exhibiting with little or no deterioration in properties.
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Buttner David
Johnson Kenneth H.
Nova Chemicals Inc.
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