摘要:
The present invention provides a bearing material that is excellent in durability and is capable of maintaining wear resistance over a long period of time. The bearing material of the present invention is a high wear-resistance bearing material 10 for being used under a humid environment comprising: a base body 12 made of a polymer material having a methylene group; and a polymer layer 30 covering a bearing surface 16 of the substrate 12, the polymer layer 30 comprising polymer chains which have a phosphorylcholine group and are grafted from the bearing surface 16, wherein a phosphoric index of the sliding surface 16 which is calculated by dividing a peak intensity of phosphate group in an infrared spectrum measured on the sliding surface by a peak intensity of the methylene group therein is not less than 0.28.
摘要:
An artificial joint member made of a polymeric material including a portion made of a polymeric substance has a sliding surface composed of a polymer having phosphoryl choline groups. With such an arrangement, the artificial joint member is provided with a sliding part capable of keeping a satisfactory lubricating state for a long term.
摘要:
Skin external preparation composition applicable to atopic dermatitis, etc. and exhibit little side effect, containing a natural oil and/or fat (A) containing an ω-3 unsaturated fatty acid and an ω-6 unsaturated fatty acid, the content of the ω-3 unsaturated fatty acid being 4 times or more the content of the ω-6 unsaturated fatty acid; a phosphorylcholine-like group containing polymer (B); and an antioxidant (C).
摘要:
The present invention is affinity particles that are characterized by having phosphorylcholine groups represented by the following formula (1) covalently bonded onto the surface of inorganic powder and also by having ligands having specific affinity with a certain target substance covalently bonded or adsorbed onto the surface of inorganic powder. The object of the present invention is to provide an affinity separation method that uses affinity particles utilizing inexpensive inorganic particles and is capable of separating the target substance easily and with high accuracy.
摘要:
An artificial joint member made of polymeric materials, wherein a surface layer of the sliding part is made of a polymer having phosphorylcholine groups. Thus, the sliding part can retain a satisfactory lubricated state over long.
摘要:
A wound-covering preparation containing a polymer having a group represented by formula (I) (wherein R?1, R2, and R3¿ are the same or different and each represents hydrogen or C¿1-4? alkyl, and m is an integer of 2 to 4); a wound-covering material containing the preparation; and a method of wound healing which comprises the step of covering the wound of a patient with the wound-covering material to protect the wound.
摘要:
A process for producing an aqueous solution of a phosphorylcholine group bearing polymer, comprising polymerizing a polymerizable composition containing a phosphorylcholine group bearing monomer of general formula (1) in the presence of a nonmetallic polymerization initiator soluble in a water-containing medium to obtain a crude aqueous solution of a polymer and purifying the solution by the use of a separation membrane; and an aqueous solution of a phosphorycholine group bearing polymer produced by this process and having an impurity content of 2000 ppm. or below (X: a divalent organic residue; Y: C1-C6 alkyleneoxy; Z: H or R -O-CO- (R : C1-C10 alkyl or C1-C10 hydroxyalkyl); R : H or CH3; R , R and R : H, C1-C6 hydrocarbyl or hydroxylated hydrocarbyl; and m: 0 or 1).
摘要:
A wound-covering agent containing a polymer having a group represented by formula (I) (wherein R 1 , R 2 and R 3 are the same or different and each represents hydrogen atom or C 1-4 alkyl, and m is an integer of 2 to 4); a wound-covering material containing the preparation; and a method of wound healing which comprises the step of covering the wound of a subject with the wound-covering material to protect the wound.
摘要:
Solubilizers, emulsifiers and dispersing agents having the effects of moisturizing the skin when used as washing agents and having the character of elevating the concentration of a material to be solubilized, emulsified or dispersed in solvents including water as compared with the case where the material is employed alone, or elevating the apparent concentration of a material to be emulsified or dispersed in solvents by increasing homogeneity of the emulsion or dispersion which contain as the active ingredient polymers obtained by polymerizing monomer compositions containing at least one hydrophilic monomer (a) having a group represented by general formula (1) in the side chain, wherein R 1 , R 2 and R 3 represent each H or C1-4 alkyl.