摘要:
4-(Indol-3-ylmethyl)-4-hydroxy-2-oxoglutarate, which is useful as an intermediate in the synthesis of monatin, may be synthesized from indole pyruvic acid and pyruvic acid (and/or oxaloacetic acid) by using a novel aldolase derived from the genus Pseudomonas, Erwinia, Flavobacterium, or Xanthomonas.
摘要:
The present invention relates to processes of producing glutamic acid compounds, for example, monatin, which are useful as, for example, production intermediates for sweetener or pharmaceutical products.
摘要:
A thermoplastic polymer composition is provided that includes 100 parts by weight of a block copolymer and/or its hydrogenate having polymer blocks of an aromatic vinyl compound and polymer blocks of a conjugated diene compound, and from 5 to 95 parts by weight of a block copolymer having polymer blocks of an aromatic vinyl compound and/or an olefinic compound and polymer blocks having a constitutional unit derived from a (meth) acrylic compound, a laminate containing a layer of the composition, and a hot-melt adhesive that includes the composition. Because it has good melt adhesiveness, the composition of the invention can firmly adhere in melt to various polar or non-polar materials. Using the composition, it is easy to produce laminates having a layer of the composition and a layer of some other material, through melt shaping or any other melt adhesion techniques. Since the composition of the invention is satisfactorily elastic and flexible, the laminates having a layer of the composition on their surface are flexible and elastic and have a good feel, and, in addition, they are safe because of their shock absorbability and cushionability.
摘要:
4-(Indol-3-ylmethyl)-4-hydroxy-2-oxoglutarate, which is useful as an intermediate in the synthesis of monatin, may be synthesized from indole pyruvic acid and pyruvic acid (and/or oxaloacetic acid) by using a novel aldolase derived from the genus Pseudomonas, Erwinia, Flavobacterium, or Xanthomonas.
摘要:
4-(Indol-3-ylmethyl)-4-hydroxy-2-oxoglutarate, which is useful as an intermediate in the synthesis of monatin, may be synthesized from indole pyruvic acid and pyruvic acid (and/or oxaloacetic acid) by using a novel aldolase derived from the genus Pseudomonas, Erwinia, Flavobacterium, or Xanthomonas.
摘要:
4-(Indol-3-ylmethyl)-4-hydroxy-2-oxoglutarate, which is useful as an intermediate in the synthesis of monatin, may be synthesized from indole pyruvic acid and pyruvic acid (and/or oxaloacetic acid) by using a novel aldolase derived from the genus Pseudomonas, Erwinia, Flavobacterium, or Xanthomonas.
摘要:
Resin compositions which contain a compound having at least two epoxy and/or thiirane groups in the molecule (ingredient (1)) and a specific ionic liquid (ingredient (2)), as combined, are practicable resin compositions which comprise constitutive elements of readily available materials and have well-balanced suitable curing capability and storage stability. Preferably, the ionic liquid (ingredient (2)) comprises a combination of an ammonium cation or phosphonium cation and a carboxylate anion.
摘要:
Substrate materials for magnetic heads consisting of 24-75 mol % of .alpha.-Al.sub.2 O.sub.3 and the remaining 76-25 mol % of TiC.sub.x O.sub.y N.sub.z containing a small amount of additives, that has a NaCl-type structure which retain known characteristics required on such materials and have controlled sizes of crystallites of Al.sub.2 O.sub.3 and TiC.sub.x O.sub.y N.sub.z, uniformly dispersed TiC.sub.x O.sub.y N.sub.z crystallites and, if any, additive elements, in which internal stress is relieved. The materials are intended for eliminating problems in IBE to form steps and thus for fabricating high-precision thin-film heads for high-density recording.
摘要翻译:由24-75摩尔%的α-Al 2 O 3构成的磁头用基材和剩余的76-25摩尔%的含有少量添加剂的TiC x O y N z,其具有保留这种材料所需的已知特性的NaCl型结构并具有 控制Al2O3和TiCxOyNz的微晶尺寸,均匀分散TiCxOyNz微晶,以及任何添加元素,其中释放内应力。 这些材料旨在消除IBE中的问题以形成步骤,并因此用于制造用于高密度记录的高精度薄膜头。
摘要:
A polyamide composition comprising: 100 parts by mass of polyamide (A) with a melting point of 270° C. to 340° C., 1 to 100 parts by mass of flame retardant (B), and 1 to 10 parts by mass of anti-dripping agent (C), wherein the anti-dripping agent (C) comprises a fluorine resin (C1) and at least one polymer (C2) selected from the group consisting of an ionomer and a modified aromatic vinyl-based polymer containing less than 15 mass % of halogen atom, in which a mass ratio of the fluorine resin (C1)/the polymer (C2) is 1/4 to 4/1.
摘要:
The present invention provides a process for selectively producing an enantiomer at position 4 of an optically active compound in the cross aldol reaction of pyruvic acid and indole-3-pyruvic acid. The process comprises the step of reacting pyruvic acid with indole-3-pyruvic acid in the presence of an optically active α-amino acid containing a secondary amine and a metal ion.