摘要:
Provided is a liquid crystal polyester resin composition comprising a liquid crystal polyester resin and a fluorocarbon polymer having a flow beginning temperature of 350°C or less. The composition can give a molded article of excellent appearance, mechanical strength and lubricative property, which is useful especially in electric and electronic fields.
摘要:
A thermoplastic resin composition comprising an aromatic polycarbonate resin and an aromatic polysulfone resin and having the specific melt viscosity ratio between the two resins in the composition. This composition is excellent in heat resistance and gives a molded article of especially high temperature of deflection under load.
摘要:
The stilbene epoxy resin having two different aryl groups of the following formula: wherein R 1 through R 8 independently represent acyclic or cyclic alkyl groups having 1 through 6 carbon atoms, hydrogen atom or halogen atoms, and the epoxy resin mixture including such stilbene epoxy resin according to the present invention have lower melting points than those of the stilbene epoxy resin having two identical aryl groups and the epoxy resin mixture including such stilbene epoxy resin. Compared with the conventional resins, the resin or resin mixture of the present invention accordingly has improved working and molding properties, thereby shortening the time required for the molding and working process and giving economical advantages and preferable productivity. The epoxy resin or resin mixture according to the present invention is preferably used as adhesive, coating, or insulating material, as electrical or electronic material for laminated sheets or the like, and especially as material for encapsulating electronic parts.
摘要:
A cured resin product obtained by mixing (A) a compound having an addition-polymerizable group and capable of yielding a thermoplastic resin by its polymerization and (B) a thermosetting resin to form a uniform solution or dispersion and then curing the component (B) while simultaneously polymerizing the component (A), a process for producing the same, a resin composition, and the use of the same. As compound A olefinically unsaturated monomers like styrene, acrylonitrile or (meth)acrylates, particularly perfluoroalkyl(meth)acrylates, are preferred. The thermosetting resin is for example a cyanate, maleimide, phenolic or preferably epoxy resin in combination with a suitable curing agent. The compositions are used for water repellent coatings or for sealing semiconductor elements.
摘要:
57 A thermosettable epoxy resin composition comprising 100 parts by weight of an epoxy resin, 5 to 40 parts by weight of a polysulfone resin having both a resorcinol moiety and 4,4'-dichlorodiphenylsulfone moiety in the molecular chain, and an effective amount of a curing agent, which gives a cured product excellent in toughness as well as in curability, adhesion, mechanical strength at high temperatures and resistance to chemicals.
摘要:
A powder coating composition comprising as essential components: (A) polyester resin having at least two hydroxyl groups in a molecule, and (B) polyvalent organic cyanate having at least two cyanate groups in a molecule of the following formula and/or its prepolymer; wherein A is a C 1-6 hydrocarbon group, and the residues A may be different from each other; X is a single bond, a C 1-20 hydrocarbon group, carbonyl group, sulfone group, divalent sulfur atom or oxygen atom; i is an integer of 0 to 3, which may be different from each other; and n is 0 or 1. The powder coating compound gives improved environmental sanitation in curing and high surface smoothness and high corrosion resistance of the coated product.
摘要:
An epoxy resin composition comprising (A) an epoxy resin having three or more epoxy groups per molecule and (B) an reactive oligomer having in its molecule an aromatic residue connected thereto by an -0- or -S- linkage and having at the terminal of the molecule a phonolic hydroxyl group.
摘要:
A low viscosity epoxy resin is a low viscosity polyglycidyl derivative of an aminophenol having at least one alkyl group on its aromatic ring suitably having a viscosity of not more than 15 poises as measured at 25°C. The invention provides resin compositions containing the resin and a curing agent thereof, and fibre-reinforced composite material containing as matrix a cured product of the epoxy resin composition optionally also containing further polyglycidyl material.