摘要:
A reactive hardenable binder composition based on(A) at least one aliphatic, cycloaliphatic or aliphatic-cycloaliphatic polyepoxide wherein at least 2 epoxidized cycloaliphatic radicals are bound via an aliphatic bridge,(B) at least one polycarboxylic acid unit of formula ##STR1## having an acid number between 30 and 400 whereinR.sup.1 is a radical of an at least oligomer product selected from the group consisting of polyesters and polymers having initially free OH-groups,R.sup.2 is a radical of a dicarboxylic carbocyclic acid having a COOH-group in ortho-position to its ester bond and(C) a catalyst component of the formula ##STR2## wherein R.sup.3 is a radical of a homo- or copolymer or combination of both of an unsaturated carboxylic acid with a statistically distributed number of COOH side groups or the radical of a polyester having initially free COOH-groups andMe is one equivalent of an alkaline or an alkaline earth metal, thus being present in its salt form, a process for the preparation of hardened products from said composition and a coated article having a coating based on said composition.
摘要:
A thermosetting coating or adhesive composition based on (A) at least one component selected from the group consisting of oligomeric and polymeric compounds containing at least one of the functional groups hydroxyl and epoxy groups, and (B) a polycarboxylic acid mixture comprising trimellitic acid and a major amount of at least one compound of one of the formulae ##STR1## wherein R, R' and R'", being the same or different, each represents a di- to hexavalent hydrocarbon radical having a total of from 1 to 12 carbon atoms, said radical containing from zero to 2 olefinic double bonds, said radical without double bonds being interrupted by up to 3 ether bridges:x and y which may be the same or different, each represents an integer of from 2 to 6;t an integer of from 1 to 5; andz and u, which may be the same or different, each represents zero or an integer of from 1 to 5 and a process for coating a substrate with said composition.
摘要:
A water-dilutable epoxide which is free from glycidyl ester and glycidyl ether groups, characterized in that it contains, in addition to at least one epoxide group, at least one ester group of a monocarboxylic acid and a further ester group which is vicinally arranged thereto, this further ester group having been obtained by reaction of an OH group with a polycarboxylic monoanhydride, wherein the second COOH group formed from the anhydride by the esterification occurs wholly or partially in the form of a salt with a base; processes for preparing it and the use thereof in aqueous media or media compatible with water.
摘要:
A reactive hardenable polymer mixture which comprises(A) at least one epoxy compound and(B) at least one polycarboxylic acid compound in the form of a component selected from the group consisting of(a) at least one compound of formula ##STR1## wherein R.sup.1 is a radical derived from at least one polymeric product containing hydroxy groups selected from the group consisting of a polymerization and a condensation product and a combination thereof in the form of polyesters, polymers each having a hydroxy number between 20 and 300, phenol resins having a hydroxy number between 100 and 800 and combinations thereof,R.sup.2 is a radical of an at least tetrabasic cyclic carboxylic acid having at least one COOH-group in an o- or peri-position to the ester bond,R.sup.5 is a radical of an at least dibasic cyclic carboxylic acid having at least one COOH-group in o- or peri-position to the ester bond and R.sup.5 may also be as defined for R.sup.2 ;(b) at least one at least tetrabasic cyclic carboxylic acid compound having 2 carboxylic groups in an o- or peri-position or at least one anhydride group or both together with at least one of the OH-group containing compounds from which the above defined group R.sup.1 is derived;(c) a least one compound corresponding to formula (I) or (Ia) as defined under (a) but with the proviso that the anhydride groups are replaced at least partially by a free acid or ester group or by both;(d) at least one compound as defined under (b) wherein the anhydride groups of the polycarboxylic acid compounds are replaced least partially by a free acid or ester group by both; and(e) any combination of (a) to (d), a process for the preparation of hardened products in hardening said composition.
摘要:
A water dilutable polyester having a good resistance to hydrolysis based on(A) at least one dicarboxylic acid unit,(B) at least one polycarboxylic monoanhydride and(C) at least one alcohol component containing at least dihydric alcohol,the COOH groups of the polyester being at least partially present in the form of salts with amine, characterized in that the polyester is also derived from(D) at least one epoxy compound which contains at least two oxiran rings and is selected from the group consisting of epoxidized fatty acids, derivatives thereof and epoxidized aliphatic hydrocarbons or mixtures thereof with up to 30% of monoepoxides, the percentage being based on the epoxy groups, and in that the polycarboxylic monoanhydride (B) is incorporated in the form of a half ester and is other than phthalic anhydride and maleic anhydride.The invention also relates to a process for the preparation of such polyester, its use in a coating composition and to articles coated with such coating compositions.
摘要:
A water-soluble reactive binder, characterized by a combination of at least three of the components(a) at least one halogen-free polycarboxylic acid compound;(b) at least one salt-forming substance selected from the group consisting of alkali metal, alkaline earth metal and quaternary ammonium salts, organic bases and ammonia;(c) at least one component selected from the group consisting of(c1) a polymer containing OH groups; and(c2) an epoxide compound,wherein the components (a) to (c2) are present as such or at least partially in chemically bonded form, a process for its preparation, an article coated with said binder and an adhesive containing said binder.
摘要:
The present invention relates to the diagnosis of renal disorders, in particular of polycystic kidney disease (PKD). The invention provides methods for diagnosing or monitoring the progression of PKD and test kits useful in those methods.
摘要:
Disclosed is a method of inhibiting the binding of a cell bearing a cell adhesion protein to a molecule or cell bearing a carbohydrate determinant specific for the cell adhesion molecule. The method involves contacting the cell adhesion protein-bearing cell with an inhibitor molecule bearing the carbohydrate determinant. Also disclosed is a method of inhibiting the binding of the first member of a specific binding pair to the second member of the specific binding pair, involving contacting the first member with an antibody which is specific for the first member and which is covalently bonded to a carbohydrate moiety which interferes with the antibody's ability to fix complement and bind an F.sub.c receptor. The methods of the invention may be used, for example, to reduce inflammation.
摘要:
Unsaturated polyurethanes containing from 20 to 80% by weight of polyethylene glycol units, which can be prepared by reactinga) at least one organic polyisocyanate,b) an unsaturated fatty alcohol or its polyalkylene glycol ether, an unsaturated fatty amine or a reaction product of an unsaturated fatty acid and a monoepoxide,c) a compound which contains not only two groups which react with isocyanate groups but also at least one group which is ionic.d) a polyalkylene glycol having a molecular mass of from 750 to 10,000, and if desirede) a compound containing from three to six hydroxyl or amino groups,the ratio of the isocyanate groups in a) to the hydroxyl and amino groups in the remaining components being from 0.7:1 to 1.2:1. These unsaturated polyurethanes are used as dispersants for alkyd resins.
摘要:
Copolymers based on (A) 5-95% by weight of at least one polymerizable carbamoyloxyalkyldicarboxylic acid ester, carrying hydroxyl groups, of the general formula I ##STR1## in which R.sup.1 represents hydrogen or alkyl or hydroxyalkyl having in each case 1 to 30 carbon atoms in the alkyl radical, R.sup.2 represents alkyl or hydroxyalkyl having in each case 1 to 30 carbon atoms in the alkyl radical, or the radical ##STR2## subject to the proviso that R.sup.1 is hydrogen and x is an integer from 2 to 10, R.sup.3 represents linear or branched alkylene having 2 to 5 carbon atoms, R.sup.4 represents hydrogen or methyl and R.sup.5 represents hydroxyalkyl or hydroxyaminoalkyl having in each case 2 to 20 carbon atoms in the alkyl radical, or an alkyl radical of this type which also contains ester groups and/or ether groups, and (B) 5-95% by weight of at least one copolymerizable monomer belonging to the group comprising (a) .alpha.,.beta.-olefinically unsaturated monocarboxylic acid and alkyl and hydroxyalkyl esters thereof having in each case 1 to 18 carbon atoms in the alkyl radical, and amides and nitriles thereof, and also monoalkyl and dialkyl esters of .alpha.,.beta.-olefinically unsaturated dicarboxylic acids having 1 to 18 carbon atoms in the alkyl radical, (b) vinyl-aromatic monomers, (c) vinyl esters of organic monocarboxylic acids having 1 to 18 carbon atoms in the carboxylic acid radical, and (d) glycidyl esters of unsaturated monocarboxylic and/or dicarboxylic acids, the sum of the components (A) and (B) being in all cases 100% by weight, and a process for their preparation.The copolymers are used for the preparation of shaped articles and/or coatings which have excellent properties.