摘要:
A substratum for cell culture which comprises a chemically modified collagen rich in either positive or negative charges when under culture conditions. The substratum is prepared by modifying the amino groups or carboxyl groups of collagen. The chemically modified collagen enhances the adherence and proliferation of animal cells much more actively than unmodified collagen in the presence or absence of bovine fetus serum. The cultured animal cells can be detached efficiently from the chemically modified collagen. This allows for highly selective isolation and recovery of the cultured animal cells which can be accomplished without incurring any injury from the chemically modified collagen.
摘要:
The present invention provides a polytetrafluoroethylene powder having moldability/processability as well as electrical characteristics in microwave bands. The present invention is a modified polytetrafluoroethylene powder which has (1) a dielectric loss tangent at 12 GHz of not higher than 2.0×10−4 and (2) a cylinder extrusion pressure of not higher than 45 MPa at a reduction ratio of 1600.
摘要:
The invention provides a TFE polymer capable of providing stretched materials excellent in membrane homogeneity. The present invention is related to a tetrafluoroethylene polymer having stretchability and non-melt-processability and having a standard specific gravity of 2.140 to 2.165, wherein, with regard to the heat-of-fusion curve obtained by subjecting the tetrafluoroethylene polymer in the form of an unbaked polymer to be measured having no history of being heated to a temperature of 300° C. or higher to differential scanning calorimetry at a programming rate of 2° C./minute, the ratio S2/S1 is not lower than 0.90.
摘要:
The present invention provides a novel carboxylic acid derivative, a salt thereof or a hydrate of them which is useful as an insulin sensitizer, and a medicament comprising the derivative as the effective ingredient. More specifically, it provides a carboxylic acid compound represented by the formula (I), a salt thereof or a hydrate of them. In the formula, Ar represents a 6- to 14-membered aromatic ring group which may have at least one substituent; R1, R2, R3, R4, R5, R6, R7 and R8 are the same as or different from each other and each represents a hydrogen atom, a halogen atom, a hydroxyl group, a C1-6 alkyl group or a C1-6 alkoxy group; X represents an oxygen atom or a methylene group; Y represents a group represented by the formula (II) or (III): (wherein Z represents a group represented by the formula (IV): (wherein R9, R10, R11 and R12 are the same as or different from each other and each represents a hydrogen atom, a halogen atom, a hydroxyl group, a C1-6 alkyl group or a C1-6 alkoxy group)); m is 0 or 1; and n is 0 or 1.
摘要:
The present invention provides a porous polytetrafluoroethylene molded article, wherein the specific gravity of the above porous polytetrafluoroethylene molded article is 0.9 to 2.0 and the aspect ratio of a void formed within the above molded article is not lower than 1 but not higher than 3.
摘要:
Provided is a dripping inhibitor excellent in handling characteristics. The present invention provides a dripping inhibitor including a modified polytetrafluoroethylene, the inhibitor having an average particle size of 300 to 800 μm, an apparent density of 0.40 to 0.52 g/ml, a compression ratio of 1.20 or less, an aggregate disintegration degree with 50-sec vibration of 70% or more, a cylinder extrusion pressure at a reduction ratio 1500 of 80 MPa or less, and a standard specific gravity (SSG) of 2.140 to 2.230.
摘要:
Provided is a dripping inhibitor excellent in handling characteristics. The present invention provides a dripping inhibitor including a modified polytetrafluoroethylene, the inhibitor having an average particle size of 300 to 800 μm, an apparent density of 0.40 to 0.52 g/ml, a compression ratio of 1.20 or less, an aggregate disintegration degree with 50-sec vibration of 70% or more, a cylinder extrusion pressure at a reduction ratio 1500 of 80 MPa or less, and a standard specific gravity (SSG) of 2.140 to 2.230.
摘要:
The present invention provides a low-molecular weight polytetrafluoroethylene powder that, when used as an additive in a coating material, etc., can form a coating with excellent texture and gliding properties, while also improving dispersibility and viscosity; and a production process therefor. The present invention is a process for producing a low-molecular weight polytetrafluoroethylene powder, the process comprising: an emulsion polymerization step of polymerizing at least tetrafluoroethylene in the presence of a polymerization initiator and an aqueous medium to produce emulsified particles thereof; an agglomeration step of agglomerating the emulsified particles to form an agglomerated powder thereof; and a suspension polymerization step of polymerizing at least tetrafluoroethylene in the presence of the agglomerated powder, a polymerization initiator, and an aqueous medium.
摘要:
Carboxylic acid compound or salt or hydrate thereof useful as insulin sensitizer, represented by the formula wherein R1 represents hydrogen, hydroxyl, halogen, carboxyl, or C1-6 alkyl, L represents single bond or C1-6-alkylene, C2-6-alkenylene, or C2-6-alkynylene, M represents single bond or C1-6-alkylene, C2-6-alkenylene, or C2-6-alkynylene, T represents single bond, or C1-3-alkylene, C2-3-alkenylene, or C2-3-alkynylene, W represents carboxyl, represents single bond, X represents single bond, oxygen, —NRX1CQ1O—, —OCQ1NRX1—, —CQ1NRX1O—, ONRX1CQ1—, —Q2SO2—, or —SO2Q2—, Y represents 5- to 14-membered aromatic group, and ring Z represents 5- to 14-membered aromatic group.
摘要:
The present invention provides a novel compound having an excellent PPAR agonist action. More specifically, it provides a compound represented by the following formula, a salt thereof, an ester thereof or a hydrate of them. Wherein a, b and c are the same as or different from one another and each represents 0 to 4; R1 to R6 are the same as or different from one another and each represents a hydrogen atom, a hydroxyl group, a cyano group, a halogen atom, etc.; A1 and A2 are the same as or different from each other and each represents a single bond, an oxygen atom, etc.; L, M and T each represent a single bond, an alkylene group having one to six carbon atoms, etc.; W represents a carboxyl group; the partial structure represented by the formula: represents a single bond or a double bond; X represents a single bond, an oxygen atom, —NRx1CQ1O—, etc.; Y represents Y1—Y2— (wherein Y1 represents a 5 to 14-membered aromatic ring having one to four substituents, etc.; and Y2 represents a single bond or a 5 to 14-membered aromatic ring); and the ring Z represents a 5 to 14-membered aromatic ring which have one to four substituents selected form the above-mentioned Group A, may have one or more hetero atoms and may be partially saturated.
摘要翻译:本发明提供具有优异的PPAR激动剂作用的新化合物。 更具体地,它提供由下式表示的化合物,其盐,其酯或它们的水合物。 其中a,b和c彼此相同或不同,各自表示0〜4; R 1至R 6彼此相同或不同,并且各自表示氢原子,羟基,氰基,卤素原子等; A< 1>和< 2>相同或不同,各自表示单键,氧原子等; L,M和T各自表示单键,具有1〜6个碳原子的亚烷基等; W表示羧基; 由式表示的部分结构表示单键或双键; X表示单键,氧原子,-O- O 1等。 Y表示Y 1 -Y 2 - (其中Y 1表示具有1〜4个取代基的5〜14元芳香环等。 ; Y 2代表单键或5至14元芳环); 并且环Z表示具有一至四个选自上述A组的取代基的5至14元芳环,可具有一个或多个杂原子并且可部分饱和。