JPS5849761A - Correction fluid - Google Patents

Abstract

PURPOSE:To obtain a correction fluid giving a coating film rewritable with a water-based ink leaving easily dryable written mark, by using a specific imidazoline derivative in combination with a white pigment, an organic solvent and a resin. CONSTITUTION:The objective correction fluid is composed of (A) a white pigment such as titanium oxide, (B) an organic solvent (preferably having a boiling point of 70-150 deg.C, e.g. toluene, trichloroethane, methyl ethyl ketone, etc.), (C) a resin soluble in the solvent (B) (e.g. acrylic resin, alkyd resin, vinyl resin, polyester, etc.) and (D) an imidazoline derivative of formula (R1 is alkyl, phenyl, or fatty acid residue; R2 is H or alkyl) (preferably a compound obtained by adding ethylene oxide and ethylene carbonate to the 1-position of 2- and/or 4-substituted imidazoline). The preferable weight ratios of A:B:C:D are (20-50):(30-60):(5-20): (0.1-3).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a correction fluid, and more specifically, the present invention relates to a correction fluid that enables rewriting of a coating film at a correction point with a fountain pen, felt-tip pen, etc. using water-based ink, and has excellent drying properties for rememorized handwriting. This invention relates to a correction fluid that allows a coating film to be obtained.

Conventionally, oil-based repair solution (for areas that have been repaired).

Because it is hydrophobic, if it is rewritten with a fountain pen, felt-tip pen, etc. that uses water-based ink.

There was a problem that the water-based ink was repelled and it was difficult to write again, and even if it was possible to write again, the handwriting dried poorly.

The present inventors aimed to solve the above-mentioned problems.

As a result of various studies on substances to be added to oil-based correction fluid,
This invention has finally been completed.

The gist of the present invention is a correction fluid comprising a white pigment, an organic solvent, a resin soluble in the organic solvent, and an imidacillin derivative represented by the following general formula.

In the present invention, by using the imidacillin derivative represented by the general formula, when writing with water-based ink 4 on the paint surface of the repaired area, why can it be rewritten without repelling the water-based ink? Although it is not certain whether the handwriting will dry well, the substituent at the 2- and/or 4-position of the imidacillin derivative acts as a lipophilic group, and the hydroxyethylated hydroxyl group at the 1-position acts as a hydrophilic group. Therefore, imidacillin derivatives have a function similar to that of nonionic surfactants, and this function and the function of the hydrophilic hydroxyl group mentioned above improve the adhesion of the ink to the coating film and improve the adhesion of the ink. It is thought that it prevents repelling and also improves the penetration of the ink into the coating film, thereby improving the drying of handwriting. or.

The imidazolyte/derivative in the present invention has the same function as a nonionic surfactant as described above, and is thought to contribute to improving the dispersibility of pigments and preventing sedimentation.

The composition of the present invention will be explained below.

The white pigment is used to hide handwriting, and various titanium oxides such as rutile type and anatase type can be used, and commercially available ones include Fi, Tite-/5R-
1, R-, 650. Same R-3L, Same R-310, Same A
-110. Doujin-150. Same R-5N (manufactured by Sakai Chemical Industry Co., Ltd.) Tybake R-580. Same R-550, Same R
-950, same A-1-00. Same A-220 (and above).

Made by Ishihara Sangyo ■), Kronos ~ KR-310, KR-5
80. Same KR-480. Same KA-10゜ Same KA-20.
The same KA-30 (manufactured by 1 fl'7 Industrial Co., Ltd.) is used, and when other components are considered, the amount used is preferably 20 to 50 parts per total amount of correction fluid.

Organic solvents are those used for dissolving resins, viscosity rituals, etc., and include hydrocarbons such as toluene, xylene, n-heptane, n-octane, cyclohexane, and methylcyclohexane, 1.1.1-trichloroethane, Halogenated hydrocarbons such as tetrachloroethyle7, 1,4-dioxa7, fi-butyl ether, trioxa/etc.
-thyl system, ethyl methyl keto/, methyl-n -/'
Ketones such as zero-pyl ketone, esters such as propyl formate, ethyl acetate, etc.9. Considering the drying time of the paint film in the corrected area, those with a boiling point of 70°C to 1°50°C are preferable, and can be used alone or in combination.
The amount used is preferably 30 to 60% by weight based on the total amount of correction fluid.

In addition, if paraffinic hydrocarbons such as n-hebutane and n-octane and naphthyl hydrocarbons such as cyclohexane and methylcyclohexane are used as organic solvents,
It is also possible to correct and erase handwriting made with oil-based ink.

For example, 11 types of resin can be used in organic solvents.
Acrylic resin, alkyd resin, vinyl resin, polyester resin, etc. can be used alone or in combination.2. The amount used is preferably 5 to 20% by weight based on the total amount of correction fluid.

The imidacillin derivative represented by the general formula, which is the gist of the present invention, can be obtained by adding ethylene oxide or ethylene carbonate to the 1st position of imidacillin substituted at the 2nd and/or 4th positions, or by substituting it with ethylene chlorohydrin. , 1-
It is a hydroxyethylated product, and may be a commercially available product or a product synthesized as described above, and the amount used is 0.1% by weight based on the total amount of correction fluid.
If it is less than 3% by weight, the effect may be small, and if it is more than 3% by weight, no further effect can be expected, so 0.1 to 5% by weight is preferable.

In addition to the above ingredients, coloring pigments are used to match the color tone with the writing surface such as paper, extender pigments such as silica and calcium carbonate are used to improve hiding power, and dispersants are used to stabilize the dispersion of pigments. Add a small amount of anti-sedimentation agent, thickener to adjust the viscosity, plasticizer to adjust the hardness of the coating film, flow improver or leveling agent to improve coating performance. can do.

The correction fluid of the present invention is prepared by ball milling each of the above components.

It is obtained by dispersing and mixing using a stirring disperser such as an attritor or a sand glider.

The thus obtained coating film corrected with the correction liquid of the present invention can be rewritten with water-based ink, and the rewritten handwriting dries well.

Hereinafter, the present invention will be explained in more detail according to Examples.
In the examples, "parts" indicate "parts by weight."

Example 1 Kronos KR-380 (white pigment) 60 parts Dianal BR105 (manufactured by Mitsubishi Rayon, acrylic resin) 15 parts Xylene Zf
1 part imidacillin derivative 1 part (
R1=coconut oil fatty acid residue, 'R2=)I imidacillin derivative, manufactured by Yoken Fine Chemicals "Kiki") Mizukamil P-801 (Mizusawa Chemical ■, fine silica)
Two parts of each of the above components were dispersed in a ball mill for 24 hours to obtain a correction fluid.

Example 2 Kronos KR-38060 part Pa91)"B-66 (manufactured by Rohm &).

Acrylic resin) 12 parts 1,1,1-trichlornitane 110 parts Imidacillin derivative 1 part (Rt =
044) (J8. R product = H, 2- and 4-substituted imidacillin (C11ZL, manufactured by Shikoku Kasei Kogyo ■) whose 1st position is substituted with ethylene chlorohydrin.) 2 parts MA-400 (manufactured by Mitsubishi Kasei Corporation) , carbon black) 0.
02 parts ゛The above components were dispersed in a ball mill for 24 hours to obtain a correction liquid.

Example 5 Kronos KR-48060 part Paraloid B-67 (manufactured by Rohm &) 1-S.

Acrylic resin) 12 parts Methylcyclohexane 40 parts Ethylcyclohexane 20 parts Imidacillin derivative 1 part (R1=OMHB, Rdan=O
H! Imidacillin substituted at the 2 and 4 positions (2E・4M7.
L, manufactured by Shikoku Kasei Kogyo ■) in which the 1st position is substituted with ethylene chlorohydrin. ) Mizukamil P-8011, 5 parts DOA (Oiri Kagaku ■, plasticizer) 4 parts Each of the above components was dispersed in a ball mill for 24 hours to obtain a correction fluid.

Example 4 60 parts of Kronos KR-380 15 parts of Dyanaru BR-105 40 parts of methylcyclohexane Pegasol LA (Mopil Petroleum ■, paraffinic solvent)
20 parts imidacillin derivative (same as Example 1)
1 part Mizukamil P-8011, 5 parts DOA, S part Polyflow S (Kyoeisha Yushi ■, flow improver) 0.2 parts The above components were dispersed in a ball mill for 24 hours to obtain a correction fluid.

Comparative Examples 1 to 4 Correction fluids were obtained in the same manner as in Examples except for the imidacillin derivatives of Examples 1 to 4.

Examples 1-4. Hiding rate of correction fluids of Comparative Examples 1 to 4.

Table 1 shows the test results for rewriting properties, coating film drying time, and touch drying time. - Kazuo Wakasugi, Commissioner of the Japan Patent Office, July 1972, 1, Indication of the case, Patent Application No. 145214, filed in 1982, Amendment of the name of the invention, 3, Person making the amendment, 4, Order for amendment Date From: JP-A-58-1999, the description in the column of detailed description of the invention is written in the following errata.
49761 (4:) Correct accordingly.

Claims (1)

[Claims] A white pigment, an organic solvent, a resin soluble in the organic solvent,
A correction liquid consisting of an imidacillin derivative represented by the general formula below.