Tin compounds as antiskinning agents for oxidatively drying binders

US6224659A · kind A · utility

Assignee

• Borchers GmbH · DE

Inventors

• Gunter Link · Kaiserslautern, DE
• Dirk Edelmann · Wuppertal, DE

Key dates

• Filing date: Jul 1, 1999
• Grant date: May 1, 2001
• Expiry date: Jul 1, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D7/46
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

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) EQU R.sup.1 --COO--Sn--OOC--R.sup.2 (I), and EQU (R.sup.1 --COO)(R.sup.2 --COO).sub.n --Sn(R.sup.3)(R.sup.4).sub.m (II), wherein PA0 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, PA0 n and m are the same or different and have a value of 0, 1 or 2 and n+m=2, PA0 wherein the additives are present on the surface of the compositions as opposed to being mixed throughout the compositions.