| 摘要 |
<p>#CMT# #/CMT# Single-component moisture-curing composition comprises: at least one polyisocyanate; at least one aldimine compound (I); at least one organomethoxysilane; at least one tin catalyst in the form of a dialkyltin(IV)-compound; and at least one acid, where the ratio between the number of aldimino groups and the isocyanate groups is 0.2-0.8, the ratio between the number of methoxy groups of the organomethoxy silane and the isocyanate group is 0.2-0.7, and the ratio between the number of tin atoms of the tin catalyst and the isocyanate groups is 0.002-0.006. #CMT# : #/CMT# Single-component moisture-curing composition comprises: at least one polyisocyanate; at least one aldimine compound of formula (E1-(N=CH-Y1) n) (I); at least one organomethoxysilane, which contains at least one silicon containing group of formula (-Si(R7 a)-(OCH 3) 3 - a) (VI); at least one tin catalyst in the form of a dialkyltin(IV)-compound; and (e) at least one acid, where the ratio between the number of aldimino groups and the isocyanate groups is 0.2-0.8, the ratio between the number of methoxy groups of the organomethoxy silane and the isocyanate group is 0.2-0.7, and the ratio between the number of tin atoms of the tin catalyst and the isocyanate groups is 0.002-0.006. E1 : the organic group of an n-valent amine after removal of n primary amino groups; Y1 : monovalent 1-35C-hydrocarbon, which optionally contains an heteroatom; R7 : 1-8C-alkyl, preferably methyl; a : 0-2, preferably 0 or 1; and n : 2-4. Independent claims are included for: (1) bonding of a substrate-S1 with a substrate-S2 comprising either applying the composition on the substrate-S1, and contacting the applied composition with the substrate-S2 within the open time of the composition, or applying the composition on the substrate-S1 and on the substrate-S2, and contacting the applied composition together within the open time of the composition; (2) sealing comprising applying the composition between the substrate-S1 and the substrate-S2 so that the composition is made to contact with the substrate-S1 and substrate-S2; (3) an anisotropic composition with a predominant elastic coating and a predominant plastic core obtained by curing the composition by humidity; and (4) isotropic composition obtained by curing the composition with by homogeneously mixed in water or homogeneously mixed in water-containing component. #CMT#USE : #/CMT# The composition is useful for: bonding of substrates; sealing of joints; and producing anisotropic composition and isotropic composition (all claimed), where the substrates-S1 and/or S2 are wood, concrete, mortar, brick, tile, plaster or natural stone such as granite, marble or porous plastics. #CMT#ADVANTAGE : #/CMT# The composition cures using moisture, largely without forming bubbles, when the composition cures using atmospheric moisture, an anisotropic material is obtained which has a predominantly elastic coating that is practically tack-free on the surface and a predominantly plastic core, and has low values for the 100% extension stress and a good resilience. The composition exhibits soft elastic properties as in a wide temperature range, and has a good resilience and low susceptible contamination. #CMT#INORGANIC CHEMISTRY : #/CMT# Preferred Components: The tin catalyst is dibutyltin chloride, dibutyltin dilaurate or dioctyltindilaurate. #CMT#ORGANIC CHEMISTRY : #/CMT# Preferred Components: The organomethoxy silane is 3-glycidoxypropyltrimethoxysilane, 2-(3,4-epoxycyclohexyl)-ethyltrimethoxy-silane, 3-methacryloxypropyltrimethoxysilane, 3-isocyanatopropyitrimethoxysilane, vinyltrimethoxysilane, phenyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, bis-(3-trimethoxysilylpropyl)amine or N-(3-trimethoxysilylpropyl)-amino-succinic acid-diethylester. #CMT#POLYMERS : #/CMT# Preferred Components: The polyisocyanate is an aromatic isocyanate group containing polyurethane polymer. #CMT#DEFINITIONS : #/CMT# Preferred Definitions: E1 : 1,6-hexamethylenediamine, 1,5-diamino-2-methylpentane, 1,3-pentanediamine, 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane, 2,2,4- and 2,4,4-trimethylhexamethylenediamine, 1,3-xylylenediamine, 1,3-bis-(aminomethyl)cyclohexane, bis-(4-aminocyclohexyl)-methane, bis-(4-amino-3-methylcyclohexyl)-methane, 3(4),8(9)-bis-(aminomethyl)-tricyclo[5.2.1.02,6]decane, 1,2-, 1,3- and 1,4-diaminocyclohexane, 1,4-diamino-2,2,6-trimethylcyclohexane, 3,6-dioxaoctan-1,8-diamine, 4,7-dioxadecan-1,10-diamine, 4-aminomethyl-1,8-octanediamine, polyoxyalkylene-polyamines with two or three amino groups, 1,3- and 1,4-phenylene-diamine, 2,4- and 2,6-toluenediamine, 4,4'-, 2,4'- and 2,2'-diaminodiphenylmethane, and/or 3,3'-dichloro-4,4'-diaminodiphenylmethane; and a : 0. #CMT#EXAMPLE : #/CMT# Typical composition comprised of (in wt.%): polymer-1 (prepared by reacting polyoxypropylene-diol (3080 g), polyoxypropylenepolyoxyethylene-triol (1540 g) and toluene diisocyanate (385 g) at 80[deg] C to an isocyanate-terminated polyurethane polymer with a titrimetric estimation content of free isocyanate groups of 1.53 wt.%) (16); polymer-2 (prepared by reacting polyoxypropylene-diol (590 g), polyoxypropylenepolyoxyethylene-triol (1180 g) and isophorenediisocyanate (230 g) at 80[deg] C to an isocyanate-terminated polyurethane polymer with a titrimetric estimation content of free isocyanate groups of 2.10 wt.%) (8); aldimine (prepared from distillated 2,2-dimethyl-3-lauroyloxy-propanal (0.19 mole) and 1-amino-3-aminomethyl-3,5,5-trimethylcyclohexane (0.18 mol N)) (1.59); diisodecylphthalate (1.71); chalk (38); thickening agent (prepared from diisodecylphthalate (3000 g) and 4,4'-methylenediphenyldiisocyanate (480 g) and monobutylamine (270 g)) (28); titanium dioxide (4.50); toluene diisocyanate (0.40); 3-glycidoxypropyltrimethoxysilane (0.40); salicylic acid (5 wt.% in dioctyladipate) (0.60); and dibutyltin dilaurate (5 wt.% in dioctyladipate) (0.80).</p> |
