Tin compounds as antiskinning agents for oxidatively drying binders
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United States of America Patent
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May 1, 2001
Grant Date -
N/A
app pub date -
Jul 1, 1999
filing date -
Jul 10, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to compositions containing oxidatively drying binders and, as anti-skinning additives, tin(II) and tin(IV) compounds corresponding to formulas (I) and (II) R.sup.1 --COO--Sn--OOC--R.sup.2 (I), and (R.sup.1 --COO)(R.sup.2 --COO).sub.n --Sn(R.sup.3)(R.sup.4).sub.m (II), wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are the same or different and represent linear or branched C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.7 cycloalkyl or phenyl, n and m are the same or different and have a value of 0, 1 or 2 and n+m=2, wherein the additives are present on the surface of the compositions as opposed to being mixed throughout the compositions.
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