摘要:
Die Erfindung betrifft verdunstungsarme, lagerstabile ungesättigte Polyesterharze, die einem ethylenisch ungesättigten Polyester, Styrol als Comonomeres, Paraffine zur Verhinderung der Styrolverdunstung, sowie eine pyrogene Kieselsäure, die sowohl hydrophile als auch hydrophobe Endgruppen aufweist, enthalten.
摘要:
Epoxy acrylate resins of this invention having a structure of the general formula (I) in which R is hydrogen or a lower alkyl group, R′ is hydrogen or methyl group, and n is an interger from 0 to 20 are heat-resistant, solventsoluble, and photosensitive and photosensitive resin compositions containing said epoxy acrylate resins as main component exhibit high photosensitivity in addition to strong adhesion to substrates, good resistance to heat and chemicals, and good mechanical and electrical properties and are useful as materials for forming insulation films for multilayer devices and protective films for image sensors and as protective films for solder resists, plating resists, and color filters.
摘要:
Disclosed herein is a low-shrinkage thermosetting resin composition which comprises a thermosetting resin and a polymer having in its molecule a functional group such as aziridine group, oxazoline group, and epoxy group. It undergoes only a small amount of volume shrinkage at the time of curing. This low shrinkage leads to superior dimensional stability, surface smoothness, and crack resistance. It provides molded articles free of discoloration and having a good surface gloss, without causing mold staining.
摘要:
Die Anmeldung betrifft härtbare Formmassen, enthaltend
A. einen endständig ungesättigten Vinylester, B. einen ungesättigten Polyester, der Cyclopenten- oder Cyclohexen-Endgruppen aufweist, C. ein Bismaleinimid, D. ein Aminophenol als Comonomeres sowie gegebenenfalls E. übliche Zusatzstoffe.
Die Formmassen lassen sich zu Formstoffen mit hoher Temperaturbeständigkeit und guten mechanischen Eigenschaften auch bei Dauertemperaturbelastung aushärten.
摘要:
Stable dispersion of an organic polymer characterized by the polymerizate of an ethylenically unsaturated monomer such as an alkyl (meth)acrylate which is dispersed in a polyepoxide as a continuous phase, optionally in the presence of a dispersion stabilizer defined by the polymerizate of at least one vinyl monomer and a vinylized adduct of a polyepoxide. A process for preparing the stable dispersion is set forth which upgrades the toughness of cured polyepoxides without sacrificing other properties by lowering the dispersion viscosity, increasing the softening temperature of the matrix, and controlling the size and distribution of the dispersed particles. The dispersions are useful as powder coatings, fiber reinforced laminates, molding resins, and adhesives.
摘要:
A liquid jet recording head has a liquid passage communicated to the discharging outlet of the liquid provided on a substrate surface, said passage being formed by subjecting a layer of a resin composition curable with an active energy ray to a predetermined pattern exposure with the use of said active energy ray to thereby form a cured region of said resin composition and removing the uncured region from said layer, said resin composition comprising the component (i) shown below and at least one of the components (ii) and (iii) shown below: (i) a graft copolymerized polymer comprising a trunk chain composed mainly of structural units derived from at leastone monomer selected from the group consisting of alkyl methacrylates, acrylonitrile and styrene, having gfaft chains composed mainly of structural units derived from at least one monomer selected from the group consisting of (A) hydroxyl containing acrylic monomers, (B) amino or alkylamino containing acrylic monomers, (C) carboxylic containing acrylic or vinyl monomers, (D) N-vinylpyrrolidone or its derivatives, (E) vinylpyridine or its derivatives and (F) acrylamide derivatives represented by the following general formula I: (wherein R' represents hydrogen or an alkyl or hydroxyalkyl group having 1 to 3 carbon atoms, and R 2 represents hydrogen or an alkyl or acyl group having 1 to 4 carbon atoms which may have one or more hydroxy groups.) added to said trunk chain; (ii) an epoxy resin comprising at least one compound having two or more epoxy groups in the molecule, the epoxy groups existing in said epoxy resin being partially esterified with an unsaturated carboxylic acid; and (iii) a monomer having an ethylenically unsaturated bond.
摘要:
Damaged composites are repaired by use of a rubber modified vinyl ester resin composition as either an adhesive for bonding metal or cured composite to the area surrounding the damaged area or by placing an uncured reinforcing material saturated with a rubber modified vinyl ester resin composition over the prepared damaged zone and curing in place.