Foam-generating, hardening compositions for forming impressions of surfaces and impression trays for use therewith
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United States of America Patent
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Issued Date -
Apr 16, 2009
app pub date -
Apr 3, 2008
filing date -
Apr 5, 2007
priority date (Note) -
Abandoned
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Abstract
Foam-generating, hardening composition for making impressions of biological surfaces include A at least one impression material based on i isocyanates, which react with mono- and multi-functional amines and/or compounds having hydroxyl groups, to form urethane or urea, or ii A-silicones, or iii C-silicones, or iv Polyethers, or v alpha-silanes, or vi mixtures of two or more materials i to v, andoptionally Bat least one foaming agent. Impressions of biological surfaces made from this compound have a foam with closed pores.
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