摘要:
A process for production of a flexible laminated sheet having one or more laminated bodies each provided with a metal foil formed on one side of a resin film, the process comprising a coating step in which a varnish containing a polyamic acid and a solvent is coated onto the metal foil to form a coated film, a holding step in which the coated film formed on the metal foil is held, a drying step in which at least a portion of the solvent in the varnish is removed to form a layer composed of a resin composition, and a resin film-forming step in which the layer composed of the resin composition is heated to form a resin film containing a polyimide resin. The conditions for each step from the coating step up to the resin film-forming step are adjusted based on a target for the content of metal elements in the resin film.
摘要:
A process for production of a flexible laminated sheet having one or more laminated bodies each provided with a metal foil formed on one side of a resin film, the process comprising a coating step in which a varnish containing a polyamic acid and a solvent is coated onto the metal foil to form a coated film, a holding step in which the coated film formed on the metal foil is held, a drying step in which at least a portion of the solvent in the varnish is removed to form a layer composed of a resin composition, and a resin film-forming step in which the layer composed of the resin composition is heated to form a resin film containing a polyimide resin. The conditions for each step from the coating step up to the resin film-forming step are adjusted based on a target for the content of metal elements in the resin film.
摘要:
A polyamide-imide resin obtained by a process comprising the step of reacting an aromatic diisocyanate with a diimide dicarboxylic acid containing 40 mol % or more of a compound represented by the following general formula (1) and 20 mol % or more of a compound represented by the following general formula (2).
摘要:
A polyamide-imide resin obtained by a process comprising the step of reacting an aromatic diisocyanate with a diimide dicarboxylic acid containing 40 mol % or more of a compound represented by the following general formula (1) and 20 mol % or more of a compound represented by the following general formula (2).
摘要:
Novel phenylene derivatives shown by the general formula ##STR1## where A represents a hydrogen atom, a phenyl group or a phenoxy group, n represents an integer of 3 to 10, R.sub.1 represents a hydrogen atom or a lower alkoxy group, X.sub.1 represents --CH.sub.2 CH.sub.2 --, --CH.dbd.CH--, --CONH--, B represents ##STR2## wherein R.sub.2 represents a hydrogen atom, a halogen atom, a nitro group, etc.), ##STR3## (wherein R.sub.3 represents a hydrogen atom, a hydroxyl group or a lower alkoxy group), X.sub.2 represents --CH.dbd.CH--, --CH.sub.2 CH.sub.2 --, etc. and D represents a carboxy group, a lower alkoxycarbonyl group or ##STR4## which are useful as drugs, particularly SRS-A(slow reacting substance of anaphylaxis) antagonist, i.e. they are useful as prophylaxis and treatment for various allergic diseases (e.g. bronchial asthma, allergic rhinitis, urticaria) or, ischemic heart diseases, inflammation, etc. induced by SRS-A.
摘要:
Novel phenylene derivatives shown by the general formula ##STR1## wherein A represents a hydrogen atom, a phenyl group or a phenoxy group, n represents an integer of 3 to 10, R.sub.1 represents a hydrogen atom or a lower alkoxy group, X.sub.1 represents --CH.sub.2 CH.sub.2 --, --CH.dbd.CH--, --CONH--, .circle.B represents ##STR2## (wherein R.sub.2 represents a hydrogen atom, a halogen atom, a nitro group, etc.), ##STR3## (wherein R.sub.3 represents a hydrogen atom, a hydroxyl group or a lower alkoxy group), X.sub.2 represents --CH.dbd.CH--, --CH.sub.2 CH.sub.2 --, etc. and D represents a carboxy group, a lower alkoxycarbonyl group or ##STR4## which are useful as drugs, particularly SRS-A (slow reacting substance of anaphylaxis) antagonist, i.e. they are useful as prophylaxis and treatment for various allergic diseases (e.g. bronchial asthma, allergic rhinitis, urticaria) or, ischemic heart diseases, inflammation, etc. induced by SRS-A.
摘要:
A catechol derivative represented by the formula ##STR1## The compounds of this invention are useful for the prophylaxis and treatment for various allergic diseases, ischemic heart diseases and inflammations caused by slow reacting substance of anaphylaxis (SRS-A), since the compounds inhibit very potently the formation and release of SRS-A.
摘要:
The present invention relates to a thermosetting resin composition comprising: (1) a metal salt of a disubstituted phosphinic acid, and (2) a resin having a dielectric constant of 2.9 or less at a frequency of 1 GHz or more, and a prepreg and a laminated board using the same.
摘要:
The present invention provides a thermosetting resin composition superior with respect to all characteristics of dielectric characteristics, heat resistance, moisture resistance, electrolytic corrosion resistance, adhesiveness with a copper foil, chemical resistance and flame retardancy using a halogen-free flame retardant, its use, and for example, a prepreg, laminated board and printed wiring board. The present invention relates to: (1) a resin thermosetting resin composition comprising: (A) a phenol-modified cyanate ester oligomer obtained by reacting a cyanate compound (a) containing two or more cyanato groups in a single molecule, and (b) a phenol compound represented by the formula (I) and/or formula (II), such that a blending equivalence ratio of hydroxyl group (b)/cyanato group (a) is within a range of 0.01 to 0.3, and the monomer conversation rate of cyanate compound (a) containing two or more cyanato groups in a single molecule is 20 to 70%, (B) an epoxy resin containing two or more epoxy groups in a single molecule, and (C) at least one member selected from a metal salt of a di-substituted phosphinic acid and a phosphazene compound as a flame retardant; (2) a thermosetting resin composition comprising: components (A), (B), (C), (D) a silicone polymer containing at least one member of siloxane unit selected from a tri-functional siloxane unit represented by the formula: RSiO3/2 (wherein, R represents an organic group, and the R groups in the silicone polymer may be mutually the same or different) and a tetra-functional siloxane unit represented by the formula: SiO4/2, having a degree of polymerization of 7,000 or less, and having one or more functional groups on its terminals that react with hydroxyl groups, and (E) an organic filler; and, a prepreg obtained by using the same, and a metal-clad laminated board and printed wiring board obtained by using the same.
摘要:
Novel heterocyclic compounds shown by the general formula ##STR1## or the pharmaceutically acceptable salts thereof useful as medicament in particular as antagonist of slow reacting substance of anaphylaxis (SRS-A).