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Softener for paper

A softener and technology for paper, applied in papermaking, paper coating, textiles and papermaking, etc., can solve problems such as easy loss of moisture retention

Inactive Publication Date: 2007-08-15
NOF CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that paper obtained by using conventional humectants or paper softeners tends to lose its moisturizing feeling when exposed to high-temperature atmospheres, the present inventors conducted intensive research.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] In this specification, the oleic acid A, erucic acid A, soybean oil fatty acid, and tallow fatty acid used in the following synthesis examples 1 to 11 are all composed of carboxylic acids with 10 to 24 carbon atoms, and the fatty acid composition (mass %) As described below:

[0039] Oleic acid A: palmitic acid (2.0%), stearic acid (1.5%), palmitoleic acid (2.0%), oleic acid (91.0%), linoleic acid (2.0%), others (1.5%);

[0040] Erucic acid A: stearic acid (0.4%), linoleic acid (0.4%), linolenic acid (2.7%), arachidic acid (0.4%), behenic acid (1.0%), erucic acid (90.4%), Myristic acid (2.0%), others (2.7%);

[0041] Soybean fatty acids: palmitic acid (11.6%), stearic acid (4.2%), oleic acid (33.3%), linoleic acid (42.2%), linolenic acid (7.2%), others (1.5%); and

[0042] Tallow Fatty Acid: Myristic Acid (3.0%), Palmitic Acid (24.8%), Stearic Acid (16.1%), Myristic Acid (1.5%), Palmitoleic Acid (4.7%), Oleic Acid (41.8%) , linoleic acid (3.9%), linolenic acid (1.0%)...

Synthetic example 1

[0043] (Synthesis Example 1: Preparation of Amide-Amine Compound and Salt (a) thereof)

[0044] Add oleic acid A285.0g (1.0 mole) and diethylenetriamine 51.5g (0.5 mole) in the 4-necked bottle that is equipped with stirrer, condenser tube, thermometer and nitrogen introduction pipe, in nitrogen atmosphere, be warming up to 180 °C, and reacted at 180 °C for 2 hours while removing water from the system. The acid value of this reactant was 6.2, the total amine value was 89.5, and the tertiary amine value was 33.2. Then dehydration reaction was carried out under reduced pressure conditions of 180° C. and 20 Torr for 5 hours to obtain amido-amine with an acid value of 4.1, a total amine value of 88.3, ​​and a tertiary amine value of 76.6 (tertiary amine value / total amine value=0.87) compound. To 319 g of this amide-amine compound, 54.5 g of a 70% by mass aqueous solution of glycolic acid was added and stirred to obtain an amide-amine compound salt. The obtained amide-amine compo...

Synthetic example 2～10

[0046] Except that 1.0 mole of carboxylic acid shown in Table 1 is used instead of oleic acid A, and 0.5 mole of polyamine shown in Table 1 is used instead of diethylenetriamine, the same operation as Synthesis Example 1 is carried out to obtain amide-amine compound. Further, the acids shown in Table 1 were added in an amount corresponding to the total amine value of the obtained amide-amine compound and stirred to obtain an amide-amine compound salt. The obtained amide-amine compounds and their salts are shown in Table 1.

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PUM

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Abstract

A paper softener with which paper is excellent in softness and water absorption and can give a humectant feeling even in a high-temperature atmosphere can be obtained. The paper softener comprises (a) an amide-amine compound and / or a salt thereof and (b) a polyhydric alcohol, wherein the amide-amine compound is obtained by reacting carboxylic acid and polyamine in such a way that: according to the polyamine of 1 mol, the carboxylic acid of 1.5-2.5 mol is used to react. The carboxylic acid is composed of carboxylic acid with 10-24 carbon atom and 40-100 wt.% carboxylic acid with unsaturated link and / or branched chain. The polyamine is described by the formula of NH2-(R1-NH)n-R2-NH2, and the tertiary amine / total ammonia ratio of the amide-amine compound is 0.60-0.99, the ratio (a) / (b) of amide-amine compound and / or the salt thereof (a) with the polyhydric alcohol (b) is 1 / 99-35 / 65 based on mass ratio.

Description

technical field [0001] The invention relates to a paper softener. More specifically, it relates to a paper softener suitable for improving the quality of paper, especially thin paper such as facial tissue and toilet paper. Background technique [0002] Due to direct contact with the skin during use, thin paper such as facial tissue and toilet paper are required to be softer paper. Especially in recent years, the number of hay fever patients who frequently use facial tissue has increased, and there has been a demand for soft tissue paper with a more moisturizing feeling. As methods for producing tissue paper with a moisturizing feeling, for example, a method of impregnating a fiber web with at least one of hygroscopic salts, polyalcohols, and sugars is disclosed (JP-A-5-156596) and A method in which a polyhydroxy compound selected from glycerin and the like is applied to the surface of a wet fiber web with respect to dry fibers (JP-A-11-500496). However, the thin paper obt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/22D21H17/07D21H17/06D21H19/12
CPCD21H21/22D21H17/06D21H17/07D21H19/12
Inventor 玉井哲也中村康行浅仓一岩
Owner NOF CORP