摘要:
Provided is a moisture-curing hot melt adhesive, which has superior overall performance, including heat resistance, adhesiveness, and solidification performance, and with which there is no reduction in the resulting IC card quality or productivity. Also provided is an IC card obtained by applying such a moisture-curing hot melt adhesive. The moisture-curing hot melt adhesive for an IC card comprises a urethane prepolymer (A) having a chemical structure (A1) derived from a polyester polyol (a1) that has isocyanate groups at the terminals and that is obtained by reacting of a diol and a dicarboxylic acid having 10 carbons or fewer. The moisture-curing hot melt adhesive has a shear modulus with non-moisture curing that is between (1×104) and (1×108) Pa at 40° C. and between (1×100) and (1×104) at 80° C. An IC card can be ideally produced by bonding a decorative material and a substrate using the moisture-curing hot melt adhesive.
摘要:
A non-vinylidene fluororesin powder coating material having blocking resistance and high impact resistance, is provided. A fluororesin powder coating composition comprising a non-vinylidene fluororesin having a Tg higher than 40° C. and a resin having a Tg of from 0 to 40° C.
摘要:
A composition for fluororesin powder coating material, with which a coating film having an excellent matte effect is obtainable without impairing features of fluororesins including excellent weather resistance, and a process for its production, are presented. The composition for fluororesin powder coating material comprises at least two curing systems each comprising a fluororesin having crosslinkable sites and a curing agent reactive to the crosslinkable sites, wherein the respective curing systems substantially independently react and crosslink, and the crosslinking reaction time of one curing system is different by at least 20 seconds from the crosslinking reaction time of other curing system(s).
摘要:
To provide a release film which does not need to be changed often for hot press and is easy to be changed; a releasable cushion material which can reduce the frequency of changing a cushion material main body; and a process for producing a printed board with good productivity and low cost.A release film 10 which is to be provided on a surface of a cushion material made of silicone rubber, and which has a layer 14 containing Si on one side of a substrate 12 made of a fluororesin; a releasable cushion material wherein the release film is provided on a surface of the cushion material made of silicone rubber so that the layer containing Si is located on the cushion material side; and a process for producing a printed board wherein, when a laminate of a printed board main body and coverlay films is subjected to hot press as sandwiched between press boards, the release film is disposed on a surface of the cushion material of the coverlay film side so that the layer containing Si is located on the cushion material side.
摘要:
A film for a membrane structure, which comprises a film substrate containing a fluororesin, a photocatalyst layer and an interlayer interposed between the film substrate and the photocatalyst layer, wherein the fluororesin is at least one member selected from the group consisting of an ethylene/tetrafluoroethylene copolymer, a tetrafluoroethylene/hexafluoropropylene copolymer, a tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, a polyvinyl fluoride and a polyvinylidene fluoride; the interlayer contains an organic-inorganic hybrid polymer obtained by hydrolyzing/co-condensing at least one member selected from the group consisting of an organosilane, a hydrolysate of an organosilane and a condensate of an organosilane, and a silyl group-containing organic polymer; and the mass remaining ratio of the organic-inorganic hybrid polymer is from 50 to 80% at 500° C. measured by thermogravimetric analysis.
摘要:
It is to provide a production process by which gelation can be prevented, in a case where a solvent is removed from a curable fluororesin to obtain a chief material resin, and then coating additives such as a curing agent are mixed to produce a powder coating composition, or in a case where a curable fluororesin, a curing agent and various additives are dissolved or dispersed in a solvent to prepare a raw material solution, and the solvent is removed from the raw material solution to directly produce a powder coating material.To a solution or dispersion of a curable fluorinated copolymer (A), a gelation inhibitor (B) is added, followed by mixing, or a gelation inhibitor (B), a curing agent (C) and as the case requires, various additives (D) are added, followed by mixing, and the solution or dispersion is supplied to a thin-film vacuum evaporator to remove the solvent.
摘要:
A film for a membrane structure, which comprises a film substrate containing a fluororesin, a photocatalyst layer and an interlayer interposed between the film substrate and the photocatalyst layer, wherein the fluororesin is at least one member selected from the group consisting of an ethylene/tetrafluoroethylene copolymer, a tetrafluoroethylene/hexafluoropropylene copolymer, a tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, a polyvinyl fluoride and a polyvinylidene fluoride; the interlayer contains an organic-inorganic hybrid polymer obtained by hydrolyzing/co-condensing at least one member selected from the group consisting of an organosilane, a hydrolysate of an organosilane and a condensate of an organosilane, and a silyl group-containing organic polymer; and the mass remaining ratio of the organic-inorganic hybrid polymer is from 50 to 80% at 500° C. measured by thermogravimetric analysis.
摘要:
A fluorocopolymer film formed by molding at a molding temperature of at most 320° C. a fluorocopolymer comprising repeating units based on ethylene, repeating units based on tetrafluoroethylene, repeating units based on hexafluoropropylene and repeating units based on a fluoroalkyl vinyl ether represented by CF2═CFORf (wherein Rf represents a C1-10 fluoroalkyl group), having a molar ratio of the repeating units based on ethylene/the repeating units based on tetrafluoroethylene of from 10/90 to 60/40, a content of the repeating units based on hexafluoropropylene to the total repeating units of from 0.1 to 20 mol % and a content of the fluoroalkyl vinyl ether to the total repeating units of from 0.1 to 10 mol %, and having a volumetric flow rate of from 0.1 to 30 mm3/sec at 297° C.
摘要:
A fluoropolymer composition for coating, which comprises a polymer having a fluorine-containing cycloaliphatic structure and at least one coupling group in its molecule and a solvent for dissolving said polymer.
摘要:
To provide a release film which does not need to be changed often for hot press and is easy to be changed; a releasable cushion material which can reduce the frequency of changing a cushion material main body; and a process for producing a printed board with good productivity and low cost.A release film 10 which is to be provided on a surface of a cushion material made of silicone rubber, and which has a layer 14 containing Si on one side of a substrate 12 made of a fluororesin; a releasable cushion material wherein the release film is provided on a surface of the cushion material made of silicone rubber so that the layer containing Si is located on the cushion material side; and a process for producing a printed board wherein, when a laminate of a printed board main body and coverlay films is subjected to hot press as sandwiched between press boards, the release film is disposed on a surface of the cushion material of the coverlay film side so that the layer containing Si is located on the cushion material side.