A novel polymer comprising a water soluble polymer backbone, at least one functional group attached to the polymer backbone and having an affinity for titanium dioxide, and at least one hydrophobic functional group attached to the polymer backbone and having an affinity for latex is provided. A titanium dioxide pigment composition including the novel polymer is also provided. Also provided is a method of manufacturing a titanium dioxide pigment composition that includes the novel polymer.

A novel polymer comprising a water soluble polymer backbone, at least one functional group attached to the polymer backbone and having an affinity for titanium dioxide, and at least one hydrophobic functional group attached to the polymer backbone and having an affinity for latex is provided. A titanium dioxide pigment composition including the novel polymer is also provided. Also provided is a method of manufacturing a titanium dioxide pigment composition that includes the novel polymer.

A heterobifunctional monodispersed polyethylene glycol represented by the formula (1): ##STR00001##
wherein X.sup.1 and Y.sup.1 are each an atomic group containing a functional group capable of forming a covalent bond upon a reaction with a functional group present in a biofunctional molecule, the functional group contained in the atomic group X.sup.1 and the functional group contained in the atomic group Y.sup.1 are different from each other; R.sup.1 is a hydrocarbon group having from 1 to 7 carbon atoms or a hydrogen atom; n is an integer of 3 to 72; 1 is an integer of 2 to 72; and A.sup.1, B.sup.1 and C.sup.1 are as defined herein.

The present disclosure is directed to certain polyethers copolymers, and polyether derivatives thereof, and methods of making and using the same. For example, the starting materials may include such species as citronellol, geraniol, dihydromyrcene, adipic acid, propanediol, ethylene glycol, glycerol, 1,9-nonanediol, and 1,6-hexanediol.

Processes of preparing defined monomer sequence polymers are disclosed, in which a backbone portion of the polymer is first prepared by performing one or more sequential monomeric coupling reactions with intervening membrane diafiltration purification/isolation steps, followed by a step of decorating the backbone portion with one or more side chains at predetermined positions along its length. The process represents an improvement on prior art techniques, which impose limitations on the size of the side chains that may be present. Defined monomer sequence polymers that are obtainable by the processes are also disclosed.

Compositions comprising thiol-terminated polythioether prepolymers, polyepoxides and non-chromate corrosion inhibitors suitable for use in aerospace sealant applications are disclosed. Sealants prepared using the compositions adhere to a variety of aerospace substrates following exposure to aerospace fluids.

Compositions comprising thiol-terminated polythioether prepolymers, polyepoxides and non-chromate corrosion inhibitors suitable for use in aerospace sealant applications are disclosed. Sealants prepared using the compositions adhere to a variety of aerospace substrates following exposure to aerospace fluids.

Provided is a semiconductor nanoparticle complex in which a ligand is coordinated to a surface of a semiconductor nanoparticle. The semiconductor nanoparticle is a core-shell type semiconductor nanoparticle including a core containing In and P and one or more layers of shells, wherein at least one of the shells is formed of ZnSe. The ligand includes one or more kinds of mercapto fatty acid esters represented by the following general formula (1): HSR.sub.1COOR.sub.2 (1). The mercapto fatty acid ester has an SP value of 9.20 or more. The mercapto fatty acid ester has a molecular weight of 700 or less, and the average SP value of the entire ligand is 9.10 to 11.00. The present invention provides a semiconductor nanoparticle complex dispersible at a high mass fraction in a polar dispersion medium while keeping high fluorescence quantum yield (QY) of semiconductor nanoparticles.

Provided is a semiconductor nanoparticle complex in which a ligand is coordinated to a surface of a semiconductor nanoparticle. The semiconductor nanoparticle is a core-shell type semiconductor nanoparticle including a core containing In and P and one or more layers of shells, wherein at least one of the shells is formed of ZnSe. The ligand includes one or more kinds of mercapto fatty acid esters represented by the following general formula (1): HSR.sub.1COOR.sub.2 (1). The mercapto fatty acid ester has an SP value of 9.20 or more. The mercapto fatty acid ester has a molecular weight of 700 or less, and the average SP value of the entire ligand is 9.10 to 11.00. The present invention provides a semiconductor nanoparticle complex dispersible at a high mass fraction in a polar dispersion medium while keeping high fluorescence quantum yield (QY) of semiconductor nanoparticles.

An object of the present invention is to provide a composition that serves as an efficient arginine substrate for inducible NO synthase (iNOS) in tumor. The present invention provides a polyion complex (PIC) of PEG-b-poly(L-Arg) or poly(L-Arg)-b-PEG-b-poly(L-Arg) and a polyanionic polymer, and use thereof.