Abstract:
PROBLEM TO BE SOLVED: To provide a process for preparing carbamatoorganosilane proceeding from chloroorganosilane, which no longer has disadvantages of the prior arts.SOLUTION: The process for preparing carbamatoorganosilane (S) comprises making haloorganosilane (S1) react with a metal cyanate and an alcohol (A) in the presence of at least one kind of aprotic solvent (L). In the method, at least 50% of the solvent (L) is removed by distillation prior to solid separation of metal halides formed as by-products and of any metal cyanide residues still present.
Abstract:
The invention relates to a composition (Z) which contains (a) 0.02-200 parts by weight of particles (P) having at least one structural element of general formula =Si-L-P(O)(OR 1 ) 2 , (b) 100 parts by weight of a binder (B), (c) 0-100 parts by weight of a curing agent (H) which is reactive to the binder (B), and (d) 0-1000 parts by weigh of a solvent or a solvent mixture, L being a bivalent aliphatic or aromatic hydrocarbon group with 1 to 12 hydrocarbon atoms as defined in claim 1 and R 1 and R 2 being defined as in claim 1. The invention also relates to composite materials (K) that can be produced from the composition and to the use thereof.
Abstract:
The invention relates to a method for producing organically modified organopolysiloxanes (S) which are foamed by means of foaming agents that are selected from water and physical foaming agents and then left to harden to form foam and has, in the agent, at least one isocyanate function per molecule. According to the invention, organopolysiloxanes (S1) comprising at least one reactive group per molecule, selected from an aminoalkyl- and a hydroxyalkyl group are reacted with polyisocyanates (J) comprising at least two isocyanate groups per molecule in the presence of a solubilizing component between the reaction partners (S1) and (J) and at least 1,05 Mol isocyanate groups are present per Mol reactive groups.
Abstract:
The invention relates to cross-linkable masses on the basis of silane-terminated polyurethanes, containing at least two different compounds of the formula Y- [NH-C (=0) -NR3- (CR12)b SiRa (OR2) 3.a] x (I), wherein the groups and indices have the meaning specified in claim 1, with the stipulations that some of the groups Y contain at least one urethane group and/or urea group and at least one polyether group and/or polyester group and that more than 50% of all urethane groups and urea groups contained in the compounds of formula (I) of the mixture (A) are urea groups that are part of a terminal group of the formula -NH-C(=0) -NR3- (CR1 2)b-SiRa(OR2) 3-a (II). The invention further relates to methods for the production of said cross-linkable masses and to the use thereof as adhesives and sealants, in particular as adhesives having high tensile shear strength.
Abstract:
The invention relates to a method for producing organically modified organopolysiloxanes (S) which are foamed by means of foaming agents that are selected from water and physical foaming agents and then left to harden to form foam and has, in the agent, at least one isocyanate function per molecule. According to the invention, organopolysiloxanes (S1) comprising at least one reactive group per molecule, selected from an aminoalkyl- and a hydroxyalkyl group are reacted with polyisocyanates (J) comprising at least two isocyanate groups per molecule in the presence of a solubilizing component between the reaction partners (S1) and (J) and at least 1,05 Mol isocyanate groups are present per Mol reactive groups.
Abstract:
The invention relates to organopolysiloxanes (S) which are composed of at least one Si-C bound, radically crosslinkable unit of general formula (1) -R 1 -NR 6 -C(O)-CR 2 =CR 3
Abstract:
The invention relates to coating formulations (B) which comprise a) 20 - 90 % by weight, based on the solids content, of a hydroxyl group functional coating resin (L), b) 1 - 90 % by weight, based on the solids content, of a coat hardener (H), selected from coat hardeners containing protected and unprotected isocyanate groups, melamine-formaldehyde resins and tris(aminocarbony)triazines, c) 0.05 - 5 % by weight, based on the solids content, of particles (P), having functionalities on their surfaces that are reactive in relation to the coat hardener (H), d) 0 - 90 % by weight, based on the entire coating formulation (B), of a solvent or a solvent mixture, the particles (P) being obtainable by reacting colloidal metal or silicon oxide sols (P1) with organosilanes (A), selected from general formulae (I) and (II), wherein R 1 , R 2 , R 4 , A, X, Y, m, n and q are defined as in claim 1.
Abstract:
The invention relates to coatings (B), produced from coating formulations (B1), containing a) a paint resin (L) with reactive groups, b) a paint hardener (H) with reactive groups by means of which the paint hardener can react with the reactive groups of the paint resin (L), c) particles (P) and d) optionally solvent, wherein a) the hardened coating (B) aa) on the surface thereof or ab) in the layers adjacent to the surface which when measured from the surface are 1000 nm thick or ac) both on the surface and in the layers adjacent to the surface which when measured from the surface are 1000 nm thick has an increased concentration of particles (P) than in the interior thereof and wherein b) the particles (P) may be obtained by a reaction of colloidal metal or silicon oxide sols (P1) with organosilanes (A), selected from general formulae (I) and (II), where R 1 , R 2 , R 4 , A, X, Y, m, n and q have the meanings given in claim 1.
Abstract translation:本发明涉及由涂料配方(B1)制备的涂料(B),所述涂料配制剂具有a)具有反应性基团的涂料树脂(L),b)具有反应性官能团的涂料硬化剂(H),其与涂料固化剂 c)颗粒(P)和d)任选地含有溶剂,其中a)在其表面上的固化涂层(B)aa)或在近表面层中的ab) 表面1000nm厚或ac)在其表面和在从表面测量时比在其内部具有1000nm厚的近表面层中具有更高浓度的颗粒(P),并且其中b)颗粒( 通过使胶体金属或二氧化硅溶胶(P1)与选自通式(I)和(II)的有机硅烷(A)(其中R 1, R 2,R 4,A,X,Y,m,n和q具有权利要求1中给出的含义。
Abstract:
Die Erfindung betrifft vernetzbare Massen enthaltend (A) 100 Teile Verbindungen der Formel Y-[(CR1 2)3-SiRa(OR2)3-a]b (I),(B) mindestens 5 Gewichtsteile Siliconharze enthaltend Einheiten der Formel R3 c(R4O)dR5 eSiO(4-c-d-e)/2 (II),(C1) Katalysator ausgewählt aus metallhaltigen Härtungskatalysatoren, Guanidinen und Amidinen, und (C2) Cokatalysator enthaltend Einheiten der Formel DhSi(OR7)gR6 fO(4-f-g-h)/2 (III),wobei die Reste und Indizes die in Anspruch 1 angegebene Bedeutung haben, Verfahren zu deren Herstellung und deren Verwendung als Kleb- und Dichtstoffe, insbesondere zum Verkleben von Substraten.