Provided is a compound obtained by conjugating a tertiary amine compound or imine compound, which is useful as a drug, with a polymer, in which a structure D.sup.+ having a quaternary ammonium salt or iminium salt formed from a tertiary amine compound or imine compound D and a polymer residue Poly having a carboxy group are bonded to each other via a structure C(R.sup.1)(R.sup.2)OC(O)ANHC(O).

Provided is a compound obtained by conjugating a tertiary amine compound or imine compound, which is useful as a drug, with a polymer, in which a structure D.sup.+ having a quaternary ammonium salt or iminium salt formed from a tertiary amine compound or imine compound D and a polymer residue Poly having a carboxy group are bonded to each other via a structure C(R.sup.1)(R.sup.2)OC(O)ANHC(O).

A method of preparing a lithium salt of carboxymethyl cellulose is provided. The method includes carrying out alkalization of cellulose in the presence of lithium hydroxide to generate an alkali product; and mixing the resulting product with a halogenated (e.g., halogen-including) acetic acid or a salt thereof to carry out etherification. An amine derivative is added to at least one of the alkalization or etherification.

A method of preparing a lithium salt of carboxymethyl cellulose is provided. The method includes carrying out alkalization of cellulose in the presence of lithium hydroxide to generate an alkali product; and mixing the resulting product with a halogenated (e.g., halogen-including) acetic acid or a salt thereof to carry out etherification. An amine derivative is added to at least one of the alkalization or etherification.

The invention relates to the use of non-ionic, insoluble cellulose ethers having 3-azido-2-hydroxypropyl (AHP) groups, which are linked to the cellulose via an ether link, wherein the molar substitution degree MSAHP is in the region of 0.001 to 0.30, for the production of insoluble, solid adhesives. The cellulose ethers substituted by AHP groups are reacted in the presence of a copper or ruthenium catalyst with alkine compounds, such as phenylacetylene, propargyl alcohol, propiolic acid or heterocyclic compounds, which have a substituent with a terminal alkine group. The reaction of the azide with the alkine occurs as a 1,3-dipolar cyclcoaddition reaction at room temperature within a few seconds, and an insoluble, solid adhesive is obtained. The adhesive is suitable in particular for adhering paper, cardboard or wood.