摘要:
The present invention relates to an aqueous composition comprising at least one finely divided filler and at least one water-soluble amphoteric copolymer, a process for the preparation of such a composition and its use as an additive in the production of paper, cardboard and board.
摘要:
Solids containing (i) on average per molecule at least two groups (a) having at least one bond which can be activated with actinic radiation whereby the groups (a) are structurally different from one another and are attached to the parent structure of the solid via urethane groups, or containing (ii) on average per molecule more than one group (a) having at least one bond which can be activated with actinic radiation, the groups being structurally different from one another or the same and being attached to the parent structure of the solid via urethane groups, and from 0.01 to 1 mol %, based on the bonds present which can be activated with actinic radiation, of at least one chemically bonded polymerization inhibitor (b), preparable by reacting the starting products in the melt; use of the solids as coating materials, adhesives or sealing compounds or for preparing them; coating materials, adhesives or sealing compounds preparable using the solids; and coatings, adhesive films or seals producible from the coating materials, adhesives or sealing compounds.
摘要:
A composite comprises at least one layer which includes a composite comprising (a) from 1 to 99% by weight of a solid (I) with a primary particle size of from 5 nm to 100 &mgr;m or a mixture made from at least two solids, (b) from 99 to 1% by weight of a polymeric binder (II) which includes: (IIa) from 1 to 100% by weight of a polymer or copolymer (IIa) which has, along the chain, terminally and/or laterally, reactive groups (RG) which are capable of crosslinking reactions when exposed to heat and/or UV radiation, and (IIb) from 0 to 99% by weight of at least one polymer or copolymer (IIb) which is free from reactive groups RG, where the at least one layer has been applied to at least one second layer comprising at least one conventional separator.
摘要:
The invention relates to a binder, preferably for coating materials, which is curable thermally and/or by high-energy radiation and comprises a mixture of substances comprising (a) as one component, monomers or polymers which have a least one vinyl ether, vinyl ester, (meth)acrylic and/or allyl group and (b) as a further component, saturated polymers and/or unsaturated polymers different from component (a), with the proviso that at least one of components (a) and (b) has structural units of the formulae (I) and/or (II) the other component (b) has structural units of the formulae (I) and/or (II) at least when it contains saturated polymers. The invention also relates to a process for preparing the binder and to a formulation which comprises the binder of the invention. This formulation is in the form of a pigmented or unpigmented coating material or powder coating material. In addition, the invention relates to a procedure for preparing coatings, which following application are cured thermally and/or by irradiation with UV light or electron beams.
摘要:
A composition comprising: (a) from 0 to less than 1% by weight of a pigment (I) having a primary particle size of from 5 nm to 100 &mgr;m which is a solid Ia or a compound Ib which acts as cathode material in electrochemical cells or a compound Ic which acts as anode material in electrochemical cells or a mixture of the solid Ia with the compound Ib or the compound Ic, (b) more than 99 to 100% by weight of a polymeric material (II) which comprises: (IIa)from 1 to 100% by weight of a polymer or copolymer (IIa) containing reactive groups (RG) on the chain in terminal and/or lateral positions which are capable of crosslinking reactions in the presence of heat and/or with UV radiation, and (IIb) from 0 to 99% by weight of at least one polymer or copolymer (IIb) which contains no reactive groups (RG).
摘要:
The polyester resin impregnating and coating solution comprises polyesters having structures of the formula (I) where n is from 0 to 10 and where the solution is essentially free from monomers containing acrylic, vinylic or allylic unsaturation and where the solvent employed preferably comprises aliphatic saturated C2-6 alcohols, C3-6 ketones or C3-6 carboxylic esters or mixtures thereof, the proportion of the solvent being from 5 to 60% by weight of the overall polyester resin impregnating and coating solution.
摘要:
A multilayer element comprising a substrate, an intermediate layer and a photopolymerizable or photocrosslinkable layer in the stated order is used for producing printing or relief plates. The intermediate layer contains a copolymer of a monomer (A) of the formula (I) or (II) and a copolymerizable monomer (B) ##STR1## where R.sup.1 is vinyl, propen-2-yl, 1-buten-2-yl or styryl or a radical R.sup.2 --O--CO--CH.dbd.CH--, R.sup.2 is an alkyl, aryl, aralkyl or cycloalkyl radical of up to 10 carbon atoms, R.sup.3 is H, methyl or ethyl and n is from zero to 5. The intermediate layer in the multilayer element has improved adhesion in the laminate. It is initially nontacky and does not become tacky until after the application of the photopolymerizable layer, as a result of the interaction with said layer. The improved adhesion in the laminate is retained even after storage and repeated use of the finished printing plates.
摘要:
Use of a mixture of from 5 to 95% by weight of an azidosilane of the formulaN.sub.3 --R.sup.3 --Si--R.sup.1.sub.n (OR.sup.2).sub.3-n Iwhere R.sup.1 is C.sub.1 -C.sub.3 -alkyl, phenyl, benzyl or tolyl, R.sup.2 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkoxyalkyl, phenyl or benzyl, R.sup.3 is C.sub.1 -C.sub.8 -alkylene, which may be interrupted by oxygen, sulfur or --(N--R.sup.4)-- in which R.sup.4 is hydrogen, methyl, ethyl or phenyl, and n is 0, 1 or 2, and from 5 to 95% by weight of an aminoalkoxysilane of the formulaH.sub.2 N--R.sup.5 --Si--R.sup.6.sub.m (OR.sup.7).sub.3-m (II)where R.sup.5 is C.sub.1 -C.sub.6 -alkylene, C.sub.5 -C.sub.6 -cycloalkylene or C.sub.5 -C.sub.6 -arylene, each of which may be additionally substituted by one or two C.sub.1 -C.sub.3 -alkyl groups, and R.sup.6 and R.sup.7, independently of one another, are C.sub.1 -C.sub.6 -alkyl or C.sub.5 -C.sub.6 -cycloalkyl, each of which may likewise be additionally substituted by one or two C.sub.1 -C.sub.3 -alkyl groups, and m may be 0, 1 or 2, as an adhesion promoter between polycondensates containing, as structural units, heterocyclic ring systems containing nitrogen atoms, or precursors of these polycondensates, and inorganic substrates.
摘要:
Aqueous formulations of copolymer latices and polyisocyanate dispersions, containingA) from 5 to 40% by weight of one or more synthetic resins of(a) from 0.1 to 20 parts by weight of one or more monoolefinically unsaturated monomers which carry one or more groups which are reactive with isocyanates and(b) from 80 to 99.9 parts by weight of one or more mono- or diolefinically unsaturated monomers which are copolymerizable with (a) and have no acidic hydrogen atoms,B) from 0.5 to 5% by weight of one or more finely divided, stabilized polyisocyanates,C) effective amounts of dispersants andD) from 5 to 40% by weight of one or more finely divided fillers,are used as coating materials for woven and nonwoven substrates.
摘要:
A process for the preparation of stable dispersions of finely divided polyisocyanates, and the preparation of heat-crosslinkable isocyanate systems.Stable dispersions of finely divided polyisocyanates in a liquid which may or may not contain surfactants, protective colloids and other assistants are obtained by a method in which polyisocyanates are treated with a stabilizer in the presence of absence of the liquid, and the dispersions prepared from these are finely dispersed and/or milled under the action of high shear forces, if necessary with the addition of further stabilizer.These dispersions are useful as crosslinking agents, particularly for the preparation of heat-cross-linkable isocyanate systems.