摘要:
Substituted or unsubstituted tetrathio-, tetraseleno- or tetratelluronaphthalenes or -tetracenes form electrically conducting networks of crystal needles with electron acceptors, in particular with halogen-containing organic compounds, on a substrate. These needle networks can be coated electrolytically with metals and/or can be peeled off together with polymers from the substrate in the form of films which are electrically conducting on one side.
摘要:
Naphthacene-5,12-diones which are substituted by at least one organic thio radical are not only photoinitiators for the photopolymerization but also sensitizers for the photodimerization of ethylenically unsaturated compounds. Compositions made of these naphthacene-5,12-diones and ethylenically unsaturated compounds are suitable for the preparation of printing inks, paints, printing plates, resist materials or as image recording material.
摘要:
Polymers consisting of (a) vinyl compounds having a 2,2'-bipyridyl side group, (b) vinyl compounds having a radiation-sensitive side group and, if appropriate, (c) olefines which differ from (a) and (b), and their complexes with metal compounds, with the exception of alkali metal and alkaline earth metal compounds. They are suitable for coating substrates and for the preparation of photographic relief images. Complexes with cobalt salts are effective catalysts for the polymerization of acetylene.
摘要:
Novel photosensitive polymers having an intrinsic viscosity [.eta.] of not less than 0.10 dl/g, measured at 25.degree. C. in N,N-dimethylformamide, and consisting of 1 to 40 mol % of recurring structural elements of the formula I ##STR1## and 60 to 99 mol % of recurring structural elements of the formula II ##STR2## in which R, R', R", X, Z and Z.sub.1 are as defined in patent claim 1, are described. The polymers according to the invention can be partially complexed with metal ions of a metal of group VIII or Ib of the periodic table. In not less than 20% of the structural elements of the formula II, Z.sub.1 is --COO--C.sub.2-12 -alkylene-OH, --COO(CH.sub.2 CH.sub.2 O).sub.p H, --COO[CH.sub.2 CH(CH.sub.3)O].sub.p H, hydroxymethylphenyl, --CONH--C.sub.1-4 -alkylene-OH or --COO--C.sub.1-4 -alkylene-N(Q')(Q"), where p=2-4. The polymers according to the invention can be used, inter alia, for producing images, in particular for the construction of electrically conductive coatings or patterns.
摘要:
Novel photosensitive polymers having an intrinsic viscosity [.eta.] of not less than 0.10 dl/g, measured at 25.degree. C. in N,N-dimethylformamide, and consisting of 1 to 40 mol % of recurring structural elements of the formula I ##STR1## and 60 to 99 mol % of recurring structural elements of the formula II ##STR2## in which R, R', R", X, Z and Z.sub.1 are as defined in patent claim 1, are described. The polymers according to the invention can be partially complexed with metal ions of a metal of group VIII or Ib of the periodic table. In not less than 20% of the structural elements of the formula II, Z.sub.1 is --COO--C.sub.2-12 -alkylene--OH, --COO(CH.sub.2 CH.sub.2 O).sub.p H, --COO[CH.sub.2 CH(CH.sub.3)O].sub.p H, hydroxymethylphenyl, --CONH--C.sub.1-4 -alkylene--OH or --COO--C.sub.1-4 --alkylene--N(Q')(Q"), where p=2-4. The polymers according to the invention can be used, inter alia, for producing images, in particular for the construction of electrically conductive coatings or patterns.
摘要:
The present invention relates to a butadiene/acrylonitrile copolymer CTBN, modified by epoxy solid resin and terminated by carboxyl groups, the terminal epoxy groups thereof also having optionally been reacted. A polymer of this type is used in particular as an impact strength improving agent in epoxy resin compositions and has proven to be particularly advantageous for gluing on or of metal surfaces. It results in a significant reduction of the infiltration with corrosion, which in turn ensures a long-lived adhesive bond.
摘要:
The present invention relates to heat-curing epoxy resin compositions, which are characterized by high impact strength, good storage stability, and a low curing temperature. The epoxy resin compositions are suitable for use as a construction shell adhesive and for producing structural foams. They can already be cured in so-called bottom-baking conditions. Furthermore, it has been found that the use of an accelerator of the formula (Ia) or (Ib) results in an increase of the impact strength of heat-curing epoxy resin compositions.
摘要:
In the case of a reinforcing system for reinforcing a cavity of a structural element, a support element is connected to the structural element in the structural element for reinforcement purposes. The support element has channels, an adhesive is disposed in the cavity between the support element and the structural element, and the adhesive can be introduced into the cavity between the support element and the structural element by means of the channels.
摘要:
The invention relates to a filler material, especially for filling cavities, especially of structural elements, to a method of production and to a structural element. The inventive filler material comprises particles that are coated with a reactive duroplast, whereby the reactive duroplast is non-viscous at room temperature when not yet reacted.
摘要:
The invention relates to compositions containing at least one epoxide adduct A that comprises an average of more than one epoxide group per molecule, at least one polymer B of formula (I), at least one thixotropic agent C based on a urea derivative in a non-diffusing carrier material, and at least one hardener D for epoxy resins, which is activated at an increased temperature. Said composition is used especially as an adhesive and is provided with an extraordinarily high impact peel working value, especially at low temperatures. The invention further relates to epoxide group-terminal impact strength modifiers of formula (I), which significantly increase the impact resistance in epoxy resin compositions, particularly two-component epoxy resin compositions.