Additive for modifying the coefficient of friction of silicone release coatings and having low extractable silicone
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United States of America Patent
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May 27, 2003
Grant Date -
Dec 19, 2002
app pub date -
Apr 27, 2001
filing date -
Apr 27, 2001
priority date (Note) -
Expired
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Abstract
Low solvent and solvent-free silicone release coatings may be prepared with varying COF levels by incorporating a very high molecular weight, substantially non-reactive organopolysiloxane into a conventional curable release coating. By supplying the COF additive in the form of a relatively low viscosity master batch, adjustment of COF may be made by the coating applicator. Very low COF values can be obtained from tin-free, solvent-free coating systems, while at the same time, the coatings have very low extractables.
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