摘要:
Polymeric reaction products are obtained by reactingI) prepolymers obtained fromA) polyoxyalkylenes which have an average molecular weight M.sub.n of from 140 to 10,000 and contain on average from 1.5 to 3.0a.sub.1) primary or secondary amino groups ora.sub.2) epoxy groups per molecule andB) polymers which are based on conjugated dienes, have an average molecular weight M.sub.n of from 250 to 50,000 and contain on average from 1.5 to 3.0b.sub.1) primary or secondary amino groups orb.sub.2) epoxy groups per molecule, the components (a.sub.1) and ( b.sub.2) or (a.sub.2) and (b.sub.1) being reacted with one another so that from at least an amino equivalent excess to 3 amino equivalents of component (a.sub.1) or (b.sub.1) are present per epoxide equivalent of component (a.sub.2) or (b.sub.2), withII) at least one compound which forms free radicals.
摘要:
Polymeric reaction products useful as additions to electrocoating baths are obtainable fromA. a polyoxyalkylene which has an average molecular weight M.sub.n of from 140 to 10,000 and contains on average from 1.5 to 3.0 primary and/or secondary amino groups andB. a polymer which is based on a conjugated diene, has an average molecular weight M.sub.n of from 250 to 50,000, contains on average from 1.5 to 3.0 epoxy groups per molecule and is obtainable by reacting a hydroxyl- or carboxyl-containing polymer with a glycidyl compound.
摘要:
Polymeric reaction products are obtained by reactingI) prepolymers obtained fromA) polyoxyalkylenes which have an average molecular weight M.sub.n of from 140 to 10,000 and contain on average from 1.5 to 3.0a.sub.1) primary or secondary amino groups ora.sub.2) epoxy groupsper molecule andB) polymers which are based on conjugated dienes, have an average molecular weight M.sub.n of from 250 to 50,000 and contain on average from 1.5 to 3.0b.sub.1) primary or secondary amino groups orb.sub.2) epoxy groupsper molecule, the components (a.sub.1) and (b.sub.2) or (a.sub.2) and (b.sub.1) being reacted with one another so that from at least an amino equivalent excess to 3 amino equivalents of component (a.sub.1) or (b.sub.1) are present per epoxide equivalent of component (a.sub.2) or (b.sub.2),withII) at least one compound which forms free radicals.
摘要:
Cationic resins are obtainable by reaction ofA) a carboxyl-containing copolymer containing as comonomersa) 35-100 mol % of butadiene,b) 0-45 mol % of acrylonitrile, andc) 0-20 mol % of further comonomers, which has an average molecular weight of 500-50,000 and carries on average from 1.5 to 4 carboxyl groups per molecule, andB) a condensation product ofd) a polybasic aliphatic C.sub.10 -C.sub.100 -carboxylic acid, ande) an amine which is polyfunctional in respect of primary and secondary amino groups, the amount of e) having been determined in such a way that, arithmetically, there are from 1.05 to 4 amino groups for every carboxyl group of d),with the proviso that the amount of B) is chosen in such a way that there are from 1.05 to 4 mol of amino groups per mole of the carboxyl groups present in A).
摘要:
A heat curable coating composition, particular for cathodic electrocoating, comprises(A) from 50 to 95% by weight of a chain or step growth polymerization product having functional groups and(B) from 50 to 5% by weight of a mixture of polymethylenepolyphenyl isocyanates which contains less than 25% of diphenylmethane diisocyanates.
摘要:
Synthetic resins contain, as essential components,A) from 20 to 95% by weight of a crosslinkable binder selected from the group consisting of the polymers, polyadducts or polycondensates having reactive centers in the form of hydroxyl, thio, primary and/or secondary amino groups and/or hydrophilic centers in the form of ammonium, sulfonium and/or phosphonium groups andB) from 5 to 80% by weight of polymers consisting of a core and one or more shells and furthermoreC) from 0 to 10% by weight of one or more crosslinking agents andD) from 0 to 10% by weight of a pigment formulation consisting of one or more pigments and a resin having surfactant properties andE) from 0 to 10% by weight of additives and/or assistants.
摘要:
Binder systems suitable for electrocoating and consisting of a base resin A which carries groups which can be protonated with acids or cationic quaternary groups and, if desired, hydroxyl or thiol groups, a crosslinking component B which carries at least two blocked isocyanate groups per molecule and an organic iron compound C which is partially or completely soluble in water, as a catalyst for the thermal crosslinking of components A and B, and if desired, an additive D which increases the catalytic activity of C, are used to prepare dispersions which are used for electrocoating.
摘要:
A synthetic resin contains, as essential components,A) a crosslinkable binder selected from the group consisting of the polymers, polyadducts or polycondensates having reactive centers in the form of hydroxyl, thio or primary or secondary amino groups andB) a crosslinking agent based on at least one polyoxyalkylene polyisocyanate andC) a crosslinking agent which differs from (B) and is based on.gamma..sub.1) a polyfunctional isocyanate which differs from (B) or.gamma..sub.2) an organic compound which reacts at elevated temperatures with free amino groups of component (A) with amide formation or.gamma..sub.3) an organic compound which reacts at elevated temperatures with hydroxyl groups of component (A) with transesterification or.gamma..sub.4) a phenolic Mannich base ora mixture of two or more crosslinking agents (.gamma..sub.1) to (.gamma..sub.4).
摘要:
Synthetic resins are based on products which are obtainable by reactingA) epoxy-carrying resins based ona.sub.1) polyhydric phenols anda.sub.2) at least one compound selected from the group consisting of.alpha..sub.1) polyoxyalkylenepolyols,.alpha..sub.2) polyoxyalkylenepolyepoxides,.alpha..sub.3) polyoxyalkylenepolyamines and.alpha..sub.4) polyhydric aliphatic alcohols and,if desired,a.sub.3) phenolic compounds which react monofunctionally toward epoxides,B) monocarboxylic acids of 5 to 30 carbon atoms,C) amines which contain at least one primary and one tertiary amino group andD) formaldehyde-donating compounds.
摘要:
An apparatus for fastening and wiring of a plurality of electrical units, particularly in a switchgear cabinet. At least one mounting crosspiece (12-15) accommodating the electrical units on its mounting side can be fastened to at least two bearing rails (10, 11) arranged vertically and behind them, fasteners for fastening the electrical units on the mounting crosspiece (12-15) being provided. This mounting crosspiece (12-15) shaped like a flat strip has, on its rear side opposite the mounting side (29), an integrally formed holding rib (28) extending over its length and having a mounting groove (30) open toward the mounting side (30) designed for accommodating the heads (33) of mounting screws (34) for fastening the mounting crosspiece (12-15) by means of the holding rib (28) on the bearing rails (10, 11). At least one of the two opposite longitudinal edges of the mounting crosspiece (12-15) shaped like a flat strip can be provided with a wiring comb (39). This makes it possible to achieve a very small constructional depth and reduce the number of mounting parts at the same time, the space behind the mounting crosspiece being almost completely usable as wiring space.