JPS5941377A - Thickening agent - Google Patents

Abstract

PURPOSE:To provide a thickening agent readily soluble in water, also giving excellent thickening effect, comprising each specific diester type nonionic surfactant and amide type one. CONSTITUTION:The objective thickening agent comprising (A) a diester type nonionic surfactant of formula I (R1 and R2 are each 7-23C long-chain alkyl, 7-23C long-chain alkenyl, or 7-23C long-chain hydroxyalkyl; l is an integer: 100-500) and (B) an amide type nonionic surfactant of formula II [R3 is 7-23C long-chain alkyl, or 7-23C long-chain alkenyl; A is 2-4C alkyl (pref. ethylene); Y is H or -(AO)nH; m and n are each >=1 (pref. m is 1-3)] in such amounts that the weight ratio (A):(B) falls between 5:1-200:1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to thickeners. More specifically, it relates to thickeners that are easily understood as water and have excellent thickening effects.

Conventionally, polyethylene glycol distearate has been used in a wide variety of ways as a thickening agent for aqueous systems, such as a thickening stabilizer for printing emulsion pastes and a thickening agent for stabilizing the dispersion state of pigment particles in pigment pastes. ing. However, this thing has a vulgar understanding of water! ＜As it is necessary to use hot water of 90℃ or higher for bathing, it is said that some hydrolysis may occur, or that equipment to supply high temperature water is required, and the work is dangerous. The problem is:.

As a result of repeated research by the present inventors to improve this drawback,
We have arrived at the present invention.

(In the formula, 1 and R2 are long chain alkyl with 7 to 23 carbon atoms 7!!(,'j2 Long chain alkenyl with 7 to 23 prime numbers) group or a long-chain hydroquine alkyl group having 7 to 23 carbon atoms, and e is an integer of 100 to 500.
11+lI to I) and -Ill' of formula (2) (where l(, is a long chain alkylno i( of 7 to 23 carbon atoms)
or a long chain alkenyl group with 7 to 23 carbon atoms (teari, l
\ is alkyl with 2 to 4 carbon atoms! I(, Y is hydrogen or -
(AO),, H is a group that is reduced. 11 and 11 are integers of 1 or more. ) The amide-type nonionic surfactant (1) shown in Table 1 contains an amide-type nonionic surfactant (1)).

In the present invention, the following % indicates weight %.

The diester-embossed ionic surfactant of the present invention (2)
In general formula (1) representing I), R1 and I? The long chain alkyl group having 7 to 23 carbon atoms in 2 is a heptyl group,
Nonyl group, dodecyl group, tetradecyl group, bentatecyl group, heptadecyl group, octadecyl group, eicosyl group,
Examples include tocosyl group, coconut oil fatty acid residue (residue refers to a group obtained by removing a carboxyl group from a fatty acid), and hydrogenated beef tallow fatty acid residue.

Among these, preferably an alkyl group with lj<prime number 15 to 21, particularly preferably a bentatecyl group, a heptadecyl group, and a hydrogenated tallow fatty acid residue.

Examples of the long-chain alkenyl group having 7 to 23 carbon atoms include thecenyl group, heptadecenyl group, tocosenyl group, beef tallow fatty acid residue, and the like. Among these, hebutadecenyl groups and tallow fatty acid residues are preferred.

Examples of the long-chain hydroxyalkyl group having 7 to 23 carbon atoms include hydroxyundecyl group, hydroxybentatecyl group, hydroxyheptadecyl group, and hydroxytocosyl group. Among these, preferably carbon number 15-
21 hydroxyalkyl group, particularly preferably hydroxyheptadecyl group.

R1 and R2 are preferably long-chain alkyl,
(In addition, in R and R2, when the number of carbon atoms is less than 7, the thickening effect decreases.

(i is an integer from 100 to 500, preferably 150
It is an integer between ~300. If e is less than 100, the thickening effect will be low, and if it exceeds 500, the solubility will be reduced.

[General] Examples of the diester-embossed ionic interface and the staining agent represented by (l) include compounds 11 represented by the following general formulas (a) to (v).

CH5O;11LO(C, H2CJ(20)2:+.C
OCl5■1. , (a) L1711: +5CO
(CH2(,1120)21TOCOCI yH35(
b)RL()((J[2Ll-120)zooCOR(
c) (R: Indicates hardened beef tallow fat residue.) C2+ H4, IC0 (CH2CH2O) + 60C
OC21H4:+ ("JC+tH3:+C0CC
H2CH20)2socOc+yH<:+ (E)
The diester type surfactant (a) can also be used as a mixture of two or more types.

Amide type nonionic surfactant MU (b) of the thickener of the present invention
-; In formula (2), R3 has 7 to 23 carbon atoms;
Long chain alkyl groups include octyl group, undecyl group,
Examples include tridecyl group, pentadecyl group, heptadecyl group, coconut oil fatty acid residue, and hydrogenated beef tallow fatty acid residue.

Among these, preferred are alkyl groups having 9 to 18 carbon atoms, and particularly preferred are undecyl groups, tridecyl groups, and coconut oil fatty acid residues.

Examples of the long-chain alkenyl group having 7 to 23 carbon atoms include undecenyl group, pentadecenyl group, heptadecenyl group, tallow fatty acid residue, and the like. Among these, preferred are alkenyl groups having 13 to 17 carbon atoms, and particularly preferred are hebutadecenyl groups and beef tallow fatty acid residues.

When the number of carbon atoms in the long-chain alkyl group or alkenyl group in R3 is less than 7, the thickening effect decreases.

Y is hydrogen or a group represented by -(AO)nH, preferably hydrogen. A is an alkylene group having 2 to 4 carbon atoms, and examples include an ethylene group, a half-propylene group, and a butylene group. Preferred are ethylene and propylene groups.

m and n are integers of 1 or more, preferably m is 1-3. When Ill or 0, m-solvability decreases.

1] 1(l11.l and the 11 groups represented by 7\ may be the same or different.

--71 auxiliary formula (nonionic surfactant f'lE shown by 27
Examples of the agent include compounds represented by the following general formulas (1) to (1).

CH.

C+ +I1. ! :+ LONHul(2LHOofI
NRC0NHCH2CH20H (1<: indicates palm-curved fatty acid residue) C,, H2, C0Nf ((CH2CH20) d4
(su)CH3 C,7H31CONIrCII2CHO(CH2CH2
0) 2■ ((n) In the thickener of the present invention, the blending ratio of the diester type nonionic surfactant (a) and the amide type nonionic surfactant (1)) is preferably 5: 1
~200:1, particularly preferably 10:1~10
The ratio is 0:1.

If the blending ratio of the nonionic surfactant (b) is more than 5:1, the appearance of the water bath solution will become cloudy or the thickening effect will be reduced, and if it is less than 200:1, the m-solubility will be reduced.

The thickener of the present invention can be prepared by a conventional method,
For example, it can be obtained by adding each component, melting it at 80 to 120°C, and taking it out. The obtained thickener is usually a solid with a melting point of 40 to 70°C, and is preferably processed into powder, granules, flakes, etc. for ease of handling and for easy dissolution in water.

The method of using the thickener of the present invention is not particularly limited, but the composition of the present invention is usually poured into hot water at 60 to 80° C. in an amount to give a concentration of 1 to 10%, stirred and dissolved, and then used. It can also be used by first dissolving it in a solvent such as methanol, ethanol, propylene glycol, etc., and then diluting it with water.

The thickener of the present invention is a thickening stabilizer for emulsion paste for textile printing,
It can be preferably used as an aqueous thickener such as a thickener for stabilizing the dispersion state of pigment particles in a pigment paste. For example, the emulsion paste for textile printing is 5 of the present invention.
% aqueous solution was prepared with 1jti as mentioned above, and then polyoxyethylene chloride nonyl phenyl ether 0
5 to 1.5 parts, 7J (mix 355 to 85 parts uniformly, mix vigorously with a homomixer or homomixer at room temperature, and prepare by adding 60 to 70 parts of mineral turpentine to this number of baths. can do.

In addition to (a) and (1), the thickener of the present invention may also contain, if necessary, J components commonly added to emulsion pastes, such as polyoxyethylene alkyl ether, polyoxyethylene dialkyl ether,
Holioquine ethylene alkylphenyl ether etc.
1-, nonionic surfactants such as Nialgin rI Tasota, methyl cellulose, and other thickeners; solvents such as ethylene glycol, propylene glycol, and chrycerin;
Components such as the following can be blended with a thickener.

The thickener of the present invention is characterized by good solubility in water and excellent thickening effect.

Examples will be described below, but the present invention is not limited thereto.

Examples 1 to 3 and Comparative Example 1 Thickeners were obtained according to the following formulation. [The blending percentage is shown in Table 1] The thickener was crushed into a lump of 0.5 to 1 cm.

C+rHa:,C0(CH2CH20)2oocOc+
yH;+r, x%1? C0NHCI12CH2
011V%■<: Table 1 showing coconut curved fatty acid residues This thickener was tested for dissolution rate in water, viscosity, and appearance of the aqueous solution. The results are shown in Table 2, and it can be seen that the thickener of the present invention is particularly excellent. In addition, the dissolution rate in water, viscosity, and the Met 1 standard of aqueous solutions were tested using the following method.

(16 dissolution rate in water); 20 in a 500cc beaker
Take 380℃ of water, soak it in a 70℃ bath, and then
, W at 400 r +) + 11 using the father wing propeller
i Start stirring. Once you start stirring, add the thickener composition 1 [1] immediately and wait 1111 for the composition to dissolve into dead metal. I decided to write a song to evaluate the speed of understanding water.

(viscosity), B for aqueous 11k obtained in the test of lay speed
The viscosity was measured using an L-type viscosity of 81. Measured product A degree 25℃ (Appearance at water bath 1)
The appearance of K was examined by visual observation.

Table 2 Note 1: Since this test condition is not commonly understood, a 90°C hot water bath was used for the test after dissolution. ' Example 4 Thickener C151131CO (CH2CH20)23ocOc+
5H: u 95% CI■3 C1+ H23C0NI (CH2CHOH5%) The above thickener has good solubility in water and has an excellent thickening effect, and when added to emulsion glue, the viscosity of the glue increases greatly, Desired printing 'J 1=' 4 peaks R1° Example 5 Thickener RCO (CH2CH20) 2++ocOR97%R: Indicates hardened beef tallow fatty acid residue.

Cl5H27CONH(CH2CH20)2H8% The above thickener has good solubility in water and has an excellent thickening effect,
Also, when added to an acrylic-vinyl acetate emulsion paint, it showed good thickening and stabilizing effects.

Claims (1)

[Scope of Claims] l General formula % formula % (wherein 1 and R2 are long chain alkyl groups with 7 to 23 carbon atoms, (, long chain alkenyl groups with 7 to 23 carbon atoms 1 (
Alternatively, it is a long chain hydroxyalkyl group having 7 to 28 carbon atoms, and e is an integer of 100 to 500. ) and a diester-type nonionic surfactant (a) represented by the general formula (where 1<. is a long-chain alkyl group with 7 to 28 carbon atoms or a long-chain alkenyl group with 7 to 23 carbon atoms, is an alkylene group having 2 to 4 carbon atoms, and Y is hydrogen or -(AO). It is an n group represented by FI. nl and +1 are integers of 1 or more. An amide type nonionic surfactant represented by n (1)
) A thickener characterized by containing. 2. The mixing ratio of (a) and (b) is 5:l to 200:1
A thickening agent according to claim 1.