The present application relates to an amphiphilic polymer and a method of preparing the same.

Furthermore, the present application relates to a micelle including a drug encapsulated by the amphiphilic polymer and a composition including the same.

The amphiphilic polymer according to the present application has excellent drug encapsulation properties as well as good dispersion properties in an aqueous solution.

A material for forming an organic film contains a polymer having a repeating unit shown by the following general formula (1), and an organic solvent, where AR1 and AR2 each represent a benzene ring or a naphthalene ring which optionally have a substituent; W.sub.1 represents a divalent organic group having 2 to 20 carbon atoms and no aromatic ring, and a methylene group constituting the organic group is optionally substituted with an oxygen atom or a carbonyl group; and W.sub.2 represents a divalent organic group having 6 to 80 carbon atoms and at least one or more aromatic rings. This invention provides: an organic film material being excellent in film formability and enabling high etching resistance and excellent twisting resistance and filling property; a patterning process using this material; and a polymer suitable for such an organic film material. ##STR00001##

The lubricating oil composition for a refrigerator according to the present invention is a lubricating oil composition for a refrigerator containing a base oil containing a low-viscosity base oil component having added thereto a polyoxyalkylene glycol compound having a kinetic viscosity at 100° C. that is higher than the low-viscosity base oil component, and the base oil has a kinetic viscosity at 100° C. of 2.4 to 25 mm.sup.2/s and a ratio (Mw/Mn) of a weight average molecular weight (Mw) and a number average molecular weight (Mn) of 1.3 to 13.

The lubricating oil composition for a refrigerator according to the present invention is a lubricating oil composition for a refrigerator containing a base oil containing a low-viscosity base oil component having added thereto a polyoxyalkylene glycol compound having a kinetic viscosity at 100° C. that is higher than the low-viscosity base oil component, and the base oil has a kinetic viscosity at 100° C. of 2.4 to 25 mm.sup.2/s and a ratio (Mw/Mn) of a weight average molecular weight (Mw) and a number average molecular weight (Mn) of 1.3 to 13.

Provided are polymers having a repeating unit including at least one astaxanthin moiety. Also provided are processes for preparing the polymers and various uses thereof.

Provided are polymers having a repeating unit including at least one astaxanthin moiety. Also provided are processes for preparing the polymers and various uses thereof.

The invention contemplates certain polyethers, polyether derivatives, and methods of making and using those same polymers. For example, the starting materials can, e.g., citronellol, prenol, isocitronellol and isoprenol.

Provided herein are extended release polymers. In one aspect, a composition for sustained release of active ingredients comprises a block polymer having formula: PEG-PCL-PLA-PCL-PEG or PGA-PCL-PEG-PCL-PGA. The extended release block polymers modulate drug release rate based on the hydrophobicity of the PTSgel polymer irrespective of the nature of drug. PTSgel polymers are biodegradable, thermosensitive, and compatible with hydrophilic, hydrophobic, and combinations thereof, biologic or chemical active agents.

Provided herein are extended release polymers. In one aspect, a composition for sustained release of active ingredients comprises a block polymer having formula: PEG-PCL-PLA-PCL-PEG or PGA-PCL-PEG-PCL-PGA. The extended release block polymers modulate drug release rate based on the hydrophobicity of the PTSgel polymer irrespective of the nature of drug. PTSgel polymers are biodegradable, thermosensitive, and compatible with hydrophilic, hydrophobic, and combinations thereof, biologic or chemical active agents.

Involved are an inositol derivative and a use thereof. Specifically, provided is a compound, said compound includes two or many parts, as represented by formula (D), connected via a common central linker L2, where formula (D) is as shown below.

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