Polyisocyanatepolyamine mixtures and their use fo

专利名称：Polyisocyanate/polyamine mixtures and

their use for the production of polyureacoatings

发明人：Sharon D. Hicks,Douglas A. Wicks,Edward P.

Squiller,David C. McClurg,Terrell D.Wayt,Robert A. Wade

申请号：US08/273551申请日：19940711公开号：US05516873A公开日：19960514

摘要：The present invention relates to a coating composition which is free frompolyols and contains

a) a polyisocyanate component,

b) an aldimine based on the reaction product of a polyamine having 2 or more primaryamino groups with an aldehyde and< P>

c) a compound containing aspartate groups,

wherein components a), b) and c) are present in an amount sufficient to provide anequivalent ratio of isocyanate groups to aldimine groups and aspartate groups of 0.5:1 to20:1 and wherein component c) is present in an amount sufficient to form a clear solutionwithin 60 minutes of mixing components a), b) and c), provided that the amount ofcomponent c) is at least 5% by weight, based on the weight of components b) and c).

The present invention also relates to a polyurea coating prepared from this coating

composition.

申请人：BAYER CORPORATION

代理人：Joseph C. Gil,Thomas W. Roy

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