摘要:
The invention relates to a method of producing platelets, wherein a material to be processed into platelets is applied in a flowable or gaseous state to a substrate, consolidated, removed from the substrate, and subjected to a crushing or grinding process, wherein the material is applied to the substrate in succeeding layers such that after application, a lamina pack is present which, in cross section perpendicular to its surface, has individual laminae of a thickness of between 0.2-1000 &mgr;m, and said lamina pack, having been stripped from the substrate, is treated in such a way that the material disintegrates into individual laminae and the individual laminae are reduced in size to a particle size of 0.5-10000 &mgr;m.
摘要:
Surfaces are adhesively bonded by employing a highly reactive alkoxysilyl-functional foamable mixture, and pressing the surfaces together with the foam prepared from the foamable mixture between the surfaces.
摘要:
Coating formulations suitable for demanding applications such as automotive clear and top coats contain a hydroxyl-functional film forming resin, an isocyanate or blocked isocyanate curative, and functionalized metal oxide particles, where >50% of the reactive functionalities are more reactive towards isocyanates than at least 60% of the hydroxyl groups of the film forming resin. Coatings prepared therefrom have excellent abrasion resistance, even with low filler content.
摘要:
Isocyanate-functional silanes, particularly isocyanate-functional α-silanes, are prepared in good yield by a liquid phase thermolysis conducted in the presence of a catalyst at a pressure of >100 mbar, or >80 mbar when a thin-film evaporator is used.
摘要:
Phosphonatoalkylsilyl-functional particles have high stability and resistance to agglomeration. When used in curable binder compositions, the particles contribute to a high level of scratch resistance.
摘要:
The invention provides a process for preparing silanes which possess an isocyanate function, in which the silanes, after their chemical preparation, are purified and, after the purification, are handled exclusively in an atmosphere with a relative air humidity below 10%.
摘要:
Foamable mixtures of excellent quality and which are isocyanate free are prepared from silane-terminated prepolymers in which a proportion of the silane end groups are replaced by non-polar organic groups. As a result, the prepolymers have much greater hydrocarbon blowing agent compatibility.
摘要:
Coating formulations of improved scratch resistance suitable for use in automotive clear and top coatings contain a functional group-containing film forming resin, a curative having functional groups reactive with the film forming resin, and particles having functional groups reactive with at-least one of the functional groups of the resin or the curative, the particles functionalized with an organosilane of the formulae
摘要:
Blocked silyl isocyanates contain a methylene group between the blocked isocyanate group and silicon. The blocked isocyanates are easily prepared in high yield and purity.
摘要:
Foamable mixtures of excellent quality and which are isocyanate free are prepared from silane-terminated prepolymers in which a proportion of the silane end groups are replaced by non-polar organic groups. As a result, the prepolymers have much greater hydrocarbon blowing agent compatability.