Abstract: The present invention relates to moisture-curable compounds whicha) have an isocyanate group content (calculated as NCO, MW 42) of 2 to 30% by weight and an alkoxysilane group content (calculated as Si, MW 28) of 0.2 to 4.5% by weight,b) optionally contain repeating ethylene oxide units andc) have an equivalent ratio of isocyanate groups to alkoxy groups of 1.0:0.05 to 1.0:2.5,wherein the preceding percentages are based on the weight of the moisture-curable compounds and wherein the alkoxysilane groups are incorporated as the reaction products ofi) a polyisocyanate component having a minimum average functionality of 2.0 and containing at least 50% by weight of polyisocyanate adducts, provided that when the moisture-curable compounds contain ethylene oxide units, the polyisocyanate component has a minimum average functionality of 2.

Abstract: The present invention relates to compounds having an isocyanate group content (calculated as NCO, MW 42) of 0.2 to 20% by weight and an alkoxysilane group content (calculated as Si, MW 28) of 0.2 to 4.5% by weight, wherein the preceding percentages are the weight of the compounds, and containing sufficient chemically incorporated hydrophilic groups to form a stable dispersion in water, wherein the alkoxysilane groups are incorporated as the reaction product ofi) a polyisocyanate component having a minimum average functionality of 2.4 and containing at least 50% by weight of polyisocyanate adducts andii) compounds containing secondary amino groups and alkoxysilane groups.The present invention is also directed to the use of these compounds in admixture with isocyanate-reactive resins in aqueous, two-component coating, adhesive and sealant compositions.

Abstract: The present invention relates to moisture-curable compounds whicha) have a content of (cyclo)aliphatically-bound isocyanate groups (calculated as NCO, MW 42) of 0.2 to 30% by weight and a content of alkoxysilane groups (calculated as Si, MW 28) of 0.2 to 4.5% by weight,b) optionally contain repeating ethylene oxide units andc) have an equivalent ratio of (cyclo)aliphatically-bound isocyanate groups to alkoxy groups, which are bound to Si, of 1.0:0.05 to 1.0:1.4,wherein the preceding percentages are based on the weight of the moisture-curable compounds and wherein the alkoxysilane groups are incorporated as the reaction products of polyisocyanates with amino compounds corresponding to formula I ##STR1## The present invention also relates to coating, adhesive or sealing compositions containing these moisture-curable compounds as the binder.

Abstract: The present invention relates to an aqueous coating composition containing prior to the reaction between components A) and B)A) 10 to 75 wt. %, based on the solids contents of components A) and C), of at least one dispersion or solution of a polyester polyol containing carboxylate and/or sulphonate groups, having a weight average molecular weight of 1,000 to 40,000, an OH number of 15 to 100 and an acid number of 2 to 40 based on all of the carboxylate, carboxyl and sulphonate groups,B) an ester-modified polyisocyanate having an average NCO functionality of 2 to 6 and containing 5 to 20 wt. % of ester groups (calculated as C.sub.3 O.sub.2, MW 68), 5 to 18 wt. % of isocyanate groups and 0 to 20 wt. % of chemically incorporated hydrophilic, nonionic groups, wherein the preceding percentages are based on the solids content of the ester modified polyisocyanate andC) 25 to 90 wt.

Abstract: The present invention is directed to a polyisocyanate containinga) polyisocyanates containing isocyanurate groups and corresponding to formula 1 ##STR1## wherein R represents the residue obtained by removing one of the isocyanate groups from 4-isocyanatomethyl-1,8-octamethylene diisocyanate,optionally in admixture withb) unreacted 4-isocyanatomethyl-1,8-octamethylene diisocyanate,c) higher homologs of the polyisocyanates set forth in formula 1 containing more than one isocyanurate group andd) a polyisocyanate containing allophanate groups.The present invention also relates to the use of these polyisocyanate mixtures, optionally in blocked form, as an isocyanate component in one- or two-component coating compositions.

Abstract: The present invention relates to a polyisocyanates containing allophanate groups and optionally isocyanurate groups that are prepared by reacting compounds whichi) are substantially free of hydroxyl groups and isocyanate groups,ii) have an average of at least two urethane groups per molecule andiii) are the reaction products of linear or branched, aliphatic isocyanates with organic hydroxyl compounds,with an excess quantity, based on the urethane groups, of 4,4'-bis-(isocyanatocyclohexyl)-methane to form polyisocyanates containing allophanate groups and optionally isocyanurate groups and optionally removing at least a portion of the unreacted excess 4,4'-bis-(isocyanatocyclohexyl)-methane. The present invention also relates to a process for the production of these polyisocyanates and to their use as binders or binder components in coating compositions.

Abstract: The present invention relates to process for preparing a coated substrate having improved resistance to yellowing which comprises coating a substrate with a one-component coating composition containinga) a blocked polyisocyanate which is the reaction product of a polyisocyanate with an oxime or lactam blocking agent for isocyanate groups andb) a compound containing at least two isocyanate-reactive groups,provided that component a) and/or component b) contains the group, --CO--(R)N--N(R)--CO--, wherein R represents hydrogen or an optionally substituted hydrocarbon radical, in an amount of 0.01 to 5% by weight, based on the solids content of components a) and b),by applying the one-component coating composition wet-on-wet to a coating composition containing acid groups and/or melamine resins which has previously been applied to the substrate or by adding a melamine resin to the one-component coating composition prior to applying it to the substrate, which may optionally have been precoated.

Abstract: The present invention relates to a blocked polyisocyanate which is the reaction product of a polyisocyanate withi) 60 to 99.9 equivalent percent, based on the equivalents of isocyanate groups of the polyisocyanate prior to blocking, of an oxime or lactam blocking agent for isocyanate groups andii) 0.1 to 40 equivalent percent, based on the equivalents of isocyanate groups of the polyisocyanate prior to blocking, of hydrazine and/or a compound which is soluble in either the polyisocyanate, the blocking agent or an optional organic solvent for the polyisocyanate and contains the group, H(R)N--NR--CO--, wherein the carbonyl group is bound to carbon or nitrogen and R represents hydrogen or an optionally substituted hydrocarbon radical.

Abstract: An apparatus for laminating articles with plastic of the type having supply rolls, pressure rollers and pull rollers through which a web of plastic is drawn. Heat shoes heat the plastic prior to the pressure rollers to cause an adhesive side to become fluent. The heat shoes have a large heating surface and are filled with sand. A plenum chamber directs cooling air onto the bonded web between the pressure rollers and pull rollers. The upper rollers are carried by a spring biased slide while the lower rollers are journaled to the frame. An eccentric mechanism mounted in the slide lifts the slide and upper rollers for threading and cleaning. A threaded linking member is attached between the slide and the top of the frame for incrementally lifting the upper pressure roller to allow single side lamination.

Abstract: An apparatus for laminating articles with plastic of the type having supply rolls, pressure rollers and pull rollers through which a web of plastic is drawn. Heat shoes heat the plastic prior to the pressure rollers to cause an adhesive side to become fluent. The heat shoes have a large heating surface and are filled with sand. A plenum chamber directs cooling air onto the bonded web between the pressure rollers and pull rollers. The upper rollers are carried by a spring biased slide while the lower rollers are journaled to the frame. An eccentric mechanism mounted in the slide lifts the slide and upper rollers for threading and cleaning. A threaded linking member is attached between the slide and the top of the frame for incrementally lifting the upper pressure roller to allow single side lamination.