JP2005048196A5

JP2005048196A5 -

Info

Publication number: JP2005048196A5
Application number: JP2004323248A
Authority: JP
Filing date: 2004-11-08
Publication date: 2006-06-15

Description

実施例２、参考例１、２、比較例１〜３
表２に示す条件で、実施例１と同様にして、カチオン化ヒドロキシエチルセルロースを得た。これらのカチオン化ヒドロキシエチルセルロースについて、実施例１と同様にして、各測定を行った。結果を表２に示す。 Example 2 , Reference Examples 1 and 2 , Comparative Examples 1-3
Cationized hydroxyethyl cellulose was obtained in the same manner as in Example 1 under the conditions shown in Table 2. Each of these cationized hydroxyethyl celluloses was measured in the same manner as in Example 1. The results are shown in Table 2.

Claims

The following general formula (I) comprising a step of mixing a hydroxyalkyl cellulose and an aqueous isopropyl alcohol solution, a step of adding an alkali, a step of cationization treatment, and a neutralization step :

[Wherein R ¹ , R ² and R ³ are hydrogen atoms, the following general formula (II):

(Wherein R ⁴ represents a hydrogen atom or a methyl group, and a represents an average of 1 to 6) or the following general formula (III):

(In the formula, R ⁴ represents a hydrogen atom or a methyl group, a represents an average of 1 to 6, and R ⁵ , R ⁶ and R ⁷ each represents the same or different alkyl group having 1 to 16 carbon atoms. , X represents a halogen atom, and n represents a number of 50 to 2000.]
The cationization is characterized in that the mobility distribution (ΔU) determined by electrophoresis is in the range of 0.1 × 10 ^{−5 to} 2.0 × 10 ⁻⁵ cm ² / sec · V. A method for producing hydroxyalkyl cellulose.

The average substitution degree per glucose unit of the substituent represented by the general formula (II) is 0.4 to 2.9, and the average number of substituted moles is 1.0 to 7.0. A method for producing cationized hydroxyalkyl cellulose.

The average substitution degree per glucose unit of the substituent represented by the general formula (II) is 0.7 to 2.1, and the average substitution mole number is in the range of 1.6 to 3.6. A method for producing cationized hydroxyalkyl cellulose.

The method for producing a cationized hydroxyalkyl cellulose according to claim 1, 2 or 3, wherein the average substitution degree per glucose unit of the substituent represented by formula (III) is in the range of 0.1 to 3.0.

The method for producing a cationized hydroxyalkyl cellulose according to claim 1, 2 or 3, wherein the average substitution degree per glucose unit of the substituent represented by the general formula (III) is in the range of 0.1 to 1.5.

The method for producing a cationized hydroxyalkyl cellulose according to claim 1, 2, or 3, wherein the average substitution degree per glucose unit of the substituent represented by the general formula (III) is in the range of 0.1 to 0.9.

The method for producing a cationized hydroxyalkyl cellulose according to any one of claims 1 to 6 , wherein an isopropyl alcohol concentration in the isopropyl alcohol aqueous solution is 80 to 90% by weight.