摘要:
A dental composition including a mono- and/or a poly-cyanoacrylate, a polymerizable monomer, a stabilizer, an initiator, and optionally, pigments and a filling material.
摘要:
A thermoplastic molding composition comprisesA) from 1 to 97% by weight of a thermoplastic polyesterB) from 1 to 97% by weight of a polycarbonateC) from 1 to 40% by weight of an elastomer containing oxazoline groups and having a glass transition temperature (T.sub.g).ltoreq.0.degree. C.D) from 0.05 to 5% by weight of a bisoxazolineE) from 0 to 70% by weight of other additives and processing aids,where the total of the percentages by weight of components A) to E) is 100%.
摘要:
Compounds of the general formula I ##STR1## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.7 cycloalkyl, phenyl or benzyl,R.sub.2 is hydrogen or C.sub.1 -C.sub.4 alkyl, orR.sub.1 and R.sub.2, together with the linking carbon atom, form a 5- or 6-membered ring, andR.sub.3, R.sub.4, R.sub.5 and R.sub.6 are identical or different and are hydrogen, C.sub.1 -C.sub.12 alkyl, phenyl or phenyl substituted by 1 to 3 members selected from the group consisting of C.sub.1 -C.sub.4 alkyl, halogen or C.sub.1 -C.sub.4 alkoxy or are a group of formula --CH.sub.2 OR.sub.11, where R.sub.11, where R.sub.11 is C.sub.1 -C.sub.12 alkyl, phenyl or phenyl substituted by 1 to 3 members selected from the group consisting of C.sub.1 -C.sub.4 alkyl, halogen or C.sub.1 -C.sub.4 alkoxy, or are --C(O)--R.sub.12, and R.sub.12, and R.sub.12 is C.sub.1 -C.sub.12 alkyl,R.sub.7 is C.sub.1 -C.sub.4 alkylene, R.sub.8 is C.sub.1 -C.sub.8 alkylene, R.sub.9 is C.sub.1 -C.sub.4 alkyl, or two radicals R.sub.9 together are C.sub.1 -C.sub.4 alkylene, and R.sub.10 is C.sub.1 -C.sub.4 alkyl or phenyl,q is a value from 0 to 2,X is --S--or --NH--,Y is O or S, andZ is an organic radical which is derived from a polyisocyanate or a polyisothiocyanate containing at least three three NCO or NCS groups respectively,n is a value.gtoreq.1 and m is a value .gtoreq.1, with the proviso that n+m.gtoreq.3, are suitable for use as couplers, especially for moisture-curable polyurethane resins.
摘要:
Compounds of formula (I) ##STR1## wherein one of the radicals R.sup.1 or R.sup.2 is --N.dbd.C.dbd.O and the other is --NHC(O)S(CH.sub.2).sub.3 Si(OR.sup.3).sub.3, wherein R.sup.3 is C.sub.1 -C.sub.4 alkyl or phenyl, are most suitable for use as adhesion promoters for polyurethane single-component or two-component adhesives and also as primers.
摘要:
Compounds of the general formula I ##STR1## in which R.sup.1 is hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, phenyl or benzyl and R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl, or R.sup.1 and R.sup.2, together with the C atom to which they are attached, form a 5-membered or 6-membered ring, and R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are identical or different and are hydrogen, C.sub.1 -C.sub.12 -alkyl, phenyl which is unsubstituted or monosubstituted to trisubstituted by C.sub.1 -C.sub.4 -alkyl, halogen or C.sub.1 -C.sub.4 -alkoxy, or is a group of the formula --CH.sub.2 OR.sup.7 (II) in which R.sup.7 is C.sub.1- C.sub.12 -alkyl, phenyl which is unsubstituted or monosubstituted to trisubstituted by C.sub.1 -C.sub.4 -alkyl, halogen or C.sub.1 -C.sub.4 -alkoxy, or is --C(O)--R.sup.8, and R.sup.8 is C.sub.1 -C.sub.12 -alkyl, and also not more than two of the radicals R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are one or two groups of the formula --CH.sub.2 CH.sub.2 Si(OR.sup.9).sub.3 (III), --CH.sub.2 OC(O)CH.sub.2 Si(OR.sup.9).sub.3 (IV), --Ch.sub.2 O(C.sub.m H.sub.2m)Si(OR.sup.9).sub.3 (V) or ##STR2## in which R.sup.9 is C.sub.1 -C.sub.4 -alkyl or phenyl and m is a number from 1 to 8 and r is a number 1 or 2 and t is 0, 1, or 2 and R.sup.1 is as defined above, and, in addition, compounds of the formula I in which R.sup.4 and R.sup.5 together from a group of the formula ##STR3## in which R.sup.9 is as defined above and R.sup.3 and R.sup.6 in this case are hydrogen and n is 1 or 2 and, if n is 1, Z is an organic radical which is derived from a primary amine ZNH.sub.2 and can contain one or two --Si(OR.sup.9).sub.3 groups and, if n is 2, Z is a divalent organic radical derived from a diprimary diamine H.sub.2 NZNH.sub.2 ; subject to the proviso that the compounds of the formula I contain one to three --Si(OR.sup.9).sub.3 groups, are suitable for use as adhesion promoters, particularly for moisture-curing epoxide and polyurethane resins.
摘要:
Compounds of the general formula I ##STR1## in which R.sup.1 is hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, phenyl or benzyl and R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl, or R.sup.1 and R.sup.2, together with the C atom to which they are attached, form a 5-membered or 6-membered ring, and R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are identical or different and are hydrogen, C.sub.1 -C.sub.12 -alkyl, phenyl which is unsubstituted or monosubstituted to trisubstituted by C.sub.1 -C.sub.4 -alkyl, halogen or C.sub.1 -C.sub.4 -alkoxy, or is a group of the formula --CH.sub.2 OR.sup.7 (II) in which R.sup.7 is C.sub.1 -C.sub.12 -alkyl, phenyl which is unsubstituted or monosubstituted to trisubstituted by C.sub.1 -C.sub.4 -alkyl, halogen or C.sub.1 -C.sub.4 -alkoxy, or is --C(O)--R.sup.8, and R.sup.8 is C.sub.1 -C.sub.12 -alkyl, and also not more than two of the radicals R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are one or two groups of the formula --CH.sub.2 CH.sub.2 Si(OR.sup.9).sub.3 (III), --CH.sub.2 OC(O)CH.sub.2 CH.sub.2 Si(OR.sup.9).sub.3 (IV), --CH.sub.2 O(C.sub.m H.sub.2m)Si(OR.sup.9).sub.3 (V) or ##STR2## in which R.sup.9 is C.sub.1 -C.sub.4 -alkyl or phenyl and m is a number from 1 to 8 and r is a number 1 or 2 and t is 0, 1 or 2 and R.sup.1 is as defined above, and, in addition, compounds of the formula I in which R.sup.4 and R.sup.5 together form a group of the formula ##STR3## in which R.sup.9 is as defined above and R.sup.3 and R.sup.6 in this case are hydrogen and n is 1 or 2 and, if n is 1, Z is an organic radical which is derived from a primary amine ZnH.sub.2 and can contain one or two --Si(OR.sup.9).sub.3 groups and, if n is 2, Z is a divalent organic radical derived from a diprimary diamine H.sub.2 NZNH.sub.2 ; subject to the proviso that the compounds of the formula I contain one to three --Si(OR.sup.9).sub.3 groups, are suitable for use as adhesion promoters, particularly for moisture-curing epoxide and polyurethane resins.
摘要:
The present invention relates to halogen-free, oligomeric or polymeric phosphonic acids made up of units of the general formula (I) —[(O)m—{R1(X)n(Y)o}pR1(X)q]r—[(O)s—R5(X)t]v— (I), where: Xis —P═O(OH)2, Yis carbonyl or sulfonyl, R1, R5are, independently of one another, divalent or polyvalent, substituted or unsubstituted, heteroatom-free or heteroatom- comprising aromatic radicals, m, o, sare each, independently of one another, 0 or 1, n, q, tare each, independently of one another, 0 or an integer from 1 to 8, with n and s not simultaneously being 0, r, vare each, independently of one another, from 0 to 1, with the sum of r and v being from 0.95 to 1.05, and pis 0 or an integer ≧1, where the radicals X are substituents on R1 and R5 and the radicals Y are parts of polymer or oligomer chain, to a process for preparing these compounds and also to halogen-free mixtures comprising one or more compounds of the general formula (I) and a nitrogen-free solvent having a boiling point of >150° C.
摘要:
A process is provided for preparing urea-containing polymers by contacting a hydroxy-functional organic compound having a functionality of two or more, with a coupling agent in the presence of a strong base, wherein the coupling agent is a carbonylbislactam compound having the general formula (I): wherein n is an integer from 3 to 15, and that the contacting is conducted at a temperature between 0° C. and 80° C. The polymers thus obtained are believed to be new and are useful e.g. in tissue engineering and coatings applications.
摘要:
Compositions containing A) a copolymer based on at least one 1,3-diene and at least one polar, ethylenically unsaturated comonomer and B) a phenol-terminated polyurethane, polyurea or polyurea-urethane of the formula I ##STR1## in which m is 1 or 2, n is 2 to 6, R.sup.1 is the n-valent radical of an elastomeric prepolymer which is soluble or dispersible in epoxide resins, X and Y independently of one another are --O-- or --NR.sup.3 --, it being necessary for one of these groups to be --NR.sup.3 --, R.sup.2 is an m+1-valent radical of a polyphenol or aminophenol after the removal of the phenolic hydroxy group(s) or the amino group or both the amino group and the phenolic hydroxyl group, respectively, and R.sup.3 is hydrogen, C.sub.1 -C.sub.6 alkyl or phenyl, are described.Compounds containing the components A) and B) as well as an epoxide resin C) are also described.The cured products are distinguished by a high peel strength and high resistance to crack propagation. The curable compositions can be employed, for example, as structural adhesives.
摘要:
Self-adhesive reinforcing material comprisinga) a UV-transparent plastic film to whichb) a woven fabric impregnated with a partially acrylate-modified epoxy resin is applied which, on the side facing away from the film a), is coated withc) a layer of an epoxy resin which again is partially acrylate-modified, the resins of b) and c) being converted by UV irradiation to a gelled state which can be further cured by heat, and containing a heat-activatable hardener component, andd) a release paper applied to the side opposite the film a), is very suitable for reinforcing sheet metal.