CN86100089A - A kind of composition of erasable printing ink - Google Patents
A kind of composition of erasable printing ink Download PDFInfo
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- CN86100089A CN86100089A CN 86100089 CN86100089A CN86100089A CN 86100089 A CN86100089 A CN 86100089A CN 86100089 CN86100089 CN 86100089 CN 86100089 A CN86100089 A CN 86100089A CN 86100089 A CN86100089 A CN 86100089A
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- printing ink
- rubber
- lubricant
- pigment
- boiling point
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Abstract
A kind of erasable printing ink divides solvent and high boiling point dispersion media to form by rubber (or mixture of rubber and resin), pigment, lubricant, lower boiling.Wherein rubber (or comprising resin) is 10～18% of printing ink gross weight branch, pigment 5～12%, and lubricant 2～10%, rubber is 0.2～0.6: 1 with the ratio of low boiling point solvent weight; The high boiling point dispersion medium is 2～4: 1 with the ratio of pigment weight.Said lubricant is a lead stearate; Dispersion medium is neopentyl polyol ester or dimixo-octyl phthalate or both mixtures; Low boiling point solvent is 60～150 ℃ a petroleum hydrocarbon.Have fluent writing by the above-mentioned printing ink of forming, be suitable for writing, draw and other purposes.
Description
The present invention relates to a kind of composition of erasable printing ink.
The prescription of known preparation erasable printing ink, as introducing in the United States Patent (USP) 4097290: natural rubber is plasticated, make its molecular weight and molecular weight to 40 ten thousand to 750,000, and this rubber is dissolved in the solvent that boiling point is lower than 180 ℃, form the very high solution of viscosity, and in this solution, add the thickness suspensoid that contains 30～45% pigment and as the dimixo-octyl phthalate of high boiling solvent.
The erasability ball pen ink of introducing in Japan JP-A-5736173 and the JP-A-58208358 number application, its composition comprises rubber, low boiling point solvent, pigment, lubricant and high boiling modulator etc.Owing to selected suitable proportioning for use and made lubricant, improved the writability and the erasability of existing writing ink in the past with metallic soap.Used metallic soap is respectively lithium stearate and aluminum stearate.But lithium stearate is very responsive to the variation of printing ink to manufacture processing condition, and aluminum stearate is an amphoteric substance, forms complexity, causes the manufacturing conditions of printing ink to become harsh, and is difficult for obtaining stay-in-grade product.
The objective of the invention is to obtain a kind of have satisfied writability and erasability, denseness is softer, and storage stability is good, and makes easy writing ink.
The composition of printing ink of the present invention comprises rubber (or mixture of rubber and resin), pigment, lubricant, lower boiling rubber solvent and high boiling point dispersion medium.Wherein, rubber is 10～18% of printing ink gross weight; Pigment 5～12%; Lubricant 2～10%; Be preferably 2-6%; Rubber is 0.2～0.6: 1 with the ratio of low boiling point solvent weight; The high boiling point dispersion medium is 2～4: 1 with the ratio of pigment weight.
Characteristics of the present invention are: the employing lead stearate is a lubricant, boiling point is lower than the hydrocarbon-type oil of 150 ℃ (preferably 90～120 ℃) and makes rubber solvent, and is higher than all very good neopentyl polyol ester of 300 ℃, lubricity, viscosity temperature characteristic and low-temperature performance or the mixture of neopentyl polyol ester and dimixo-octyl phthalate is a dispersion medium with boiling point.
As previously mentioned, metallic soaps such as employing lithium stearate and aluminum stearate are that the lubricant of writing ink is a technique known, but do not see report on the document as yet with lead stearate, and lead stearate compares to above-mentioned two kinds of metallic soaps as the printing ink lubricant obvious superiority is arranged.This be because: the lead stearate lubricity is better than lithium soap and aluminium soap, and good with other component such as hydro carbons consistency in printing ink, consumption can be bigger, helps increasing the stability of printing ink, thereby improves the storage stability of printing ink.Simultaneously, not harsh because the lead stearate composition is single to the manufacturing conditions requirement of printing ink, make and make easily, the quality product that obtains at last is also more stable.In printing ink of the present invention was formed, the consumption of lead stearate was 2-10%, is preferably 2～6%.Consumption too hour, ink stability reduces; When consumption is too big, unfavorable to writing.
Adopt lead stearate to make lubricant, can not add or add less nonionic surfactant.
Another characteristics of printing ink of the present invention are: the low boilers that adopts boiling point to be lower than 150 ℃ is a rubber solvent.Usually with 60～120 ℃ hydrocarbon-type oil, as industrial naptha, sherwood oil etc.90～120 ℃ sherwood oil preferably.These hydrocarbon-type oils are nontoxic, obtain easily, and cheap, the consumption of its consumption and rubber adapts.In ink formulations of the present invention, rubber and low boiling point solvent weight ratio are 0.2～0.6: 1, and promptly low boiling point solvent accounts for 40～60% of printing ink gross weight.
It is modulator greater than Dormant oils more than 300 ℃ or diester that printing ink in the past adopts boiling point more.And printing ink employing neopentyl polyol ester of the present invention is modulator (being dispersion medium).This is topmost characteristics of printing ink of the present invention.
Neopentyl polyol ester is a kind of good synthetic lubricant, not only lubricity, thermal oxidation stability can be better than Dormant oils and diester, anti-hydrolysis ability also is better than diester, and these performances for the writability of erasable printing ink, stability and even storage stability under wet environment all be very favourable.In addition, because good viscosity temperature characteristic and the low-temperature performance of neopentyl polyol ester, thereby can guarantee that printing ink all has good writing quality and erasable performance in hot summer and severe winter.The available neopentyl polyol ester is trihydroxymethylpropanyl ester, pentaerythritol ester, ditrimethylolpropane ester and bis(pentaerythritolester) etc.The lipid acid of synthetic ester is C
4～C
18Straight chain fatty acid.The viscosity of suitable ester is preferably in 10
-5m
2Below/the S, but greater than 10
-5m
2The polyol ester of/S also can use.The consumption of ester is 15～30% of a printing ink gross weight, and 19～25% is better.
During printing ink of the present invention is formed, the polynary ester of dispersion medium neo-pentyl can use separately, also can mix use with dimixo-octyl phthalate, both can the arbitrary proportion fusion, but its total amount shared ratio in printing ink is identical when using neopentyl polyol ester separately.
When using separately neopentyl polyol ester or using the mixture of two kinds of esters to make dispersion medium, for example lauric acid, tert butyl phenolic resin etc. can not add or add less some other component in the printing ink.
The another kind of scheme that printing ink of the present invention is formed is when adopting lead stearate to make lubricant, the employing dimixo-octyl phthalate is a dispersion medium, other component is identical with first scheme, but will mix tert butyl phenolic resin this moment in the polyisoprene rubber component, otherwise effect is not good enough.The ratio of total amount in the printing ink gross weight of rubber and resin is identical when using rubber separately.Both ratios of self are 1～4: 1.
When adopting neopentyl polyol ester and/or dimixo-octyl phthalate to be dispersion medium, can be lubricant also, but be best with lead stearate with aluminum stearate, lithium stearate, calcium stearate or other metallic soap.
As the rubber of membrane-forming agent, can be natural rubber in printing ink of the present invention is formed, also can be synthetic rubber.Suitable membrane-forming agent is that molecular weight is 40～800,000 the polyisoprene rubber or the mixture of polyisoprene rubber and tert butyl phenolic resin.The content of rubber or rubber and resin is 10～18%, is preferably 13～16%.
The said pigment of printing ink of the present invention can be carbon black, natural graphite, mineral dye such as deep blue.Also can adopt pigment dyestuffs such as azo, anthraquinone.The consumption of pigment is the better below 5～12%, 10% of printing ink gross weight.The granularity of pigment should be less than 5 * 10
-6M.
In the composition of printing ink of the present invention, be pigment if adopt carbon black, with compatibilities such as lead stearate, neopentyl polyol ester or dimixo-octyl phthalate, the polyisoprene rubber mixture of tert butyl phenolic resin (or be added with), sherwood oil, better effects if.
The preparation method of the said printing ink of the present invention is:
At first the mixture with rubber or rubber and resin is dissolved in the low boiling point solvent, makes the heavy-gravity high polymeric solution.
Secondly, pigment and metallic soap are mixed with dispersion medium, heating furnishing pasty state, temperature is 70～100 ℃.Be as cold as room temperature again, place on the three-roller and grind, get the homodisperse thing.
At last, disperse thing to mix high polymeric solution and colloid, promptly make erasable printing ink.
Below be embodiments of the invention, wherein example the 1,3,5, the 6th, most preferred embodiment; Example the 2, the 4th, comparative example.
Example 1
Add 18 gram polyisoprene rubbers in 60 milliliters of sherwood oils, heating is fully dissolved rubber, and the control Heating temperature is lost and is advisable to keep the unlikely volatilization of sherwood oil.
With carbon black 10 grams, lead stearate 4 restrains C in addition
4～C
10The trihydroxymethylpropanyl ester 20 gram thorough mixing of mixed fatty acid, heating furnishing pasty state, temperature remains between 70～100 ℃.Be chilled to room temperature then, grind on three-roller, it is uniformly dispersed, last and rubber solutions mixes, and promptly gets the black erasable printing ink.
Following example is implemented by the method identical with example 1.
Example 2
180 milliliters of sherwood oils
Polyisoprene rubber 50 grams
Carbon black 38 grams
Trihydroxymethylpropanyl ester 70 grams
Example 3
90 milliliters of sherwood oils
Polyisoprene rubber 27 grams
Carbon black 15 grams
Lead stearate 6 grams
Pentaerythritol ester 30 grams
Example 4
Polyisoprene rubber 15 grams
60 milliliters of sherwood oils
Carbon black 7 grams
Lead stearate 4 grams
Dimixo-octyl phthalate 22 grams
Example 5
Polyisoprene rubber 28 grams
Tert butyl phenolic resin 12 grams
140 milliliters of sherwood oils
Carbon black 12 grams
Lead stearate 8 grams
Dimixo-octyl phthalate 40 grams
Example 6
Polyisoprene rubber 28 grams
120 milliliters of sherwood oils
Carbon black 12 grams
Lead stearate 8 grams
Dimixo-octyl phthalate 5 grams
Trihydroxymethylpropanyl ester 35 grams
The ink product of above-mentioned each routine gained is poured in ten garden pearl pen cores, on the general handwriting test machine of country, evaluate, allly do not stop up, do not break, continuous writing one km is above for passing through.And according to writability, erasability and the stability (notes) of prior regulation, mark, the result is as shown in the table:
The assessment of performance of example 1～6 ink formulations
The foregoing description clearly illustrates that, adopts prescription of the present invention, can obtain the writing ink of erasability, writing property and excellent in stability, produces a desired effect.And because composition is simple, make easily, will reduce the production cost of printing ink greatly.
Erasable when said erasability refers to all that printing ink is initial after writing among the present invention then becomes permanent not this fact of erasable after a few hours. So be specially adapted to ball pen and other writing implement, for drafting the file, revise report, use when particularly students in middle and primary schools learn.
Annotate: three main character of printing ink are writability, erasability and stability, and these several character all do not have the standard rating method. For ease of comparing, we have adopted following method to choose.
(1) writability: the unified pen core of supplying with Tianjin ball pen factory is done handwriting test. Allly write especially fluent person and be " excellent "; All writing smoothly, the clear mellow and full person in a road is " very "; Puckery sensation is arranged when writing, there is the broken string in a road once in a while person for " in "; Write effort, a road broken string is " poor " than severe patient.
(2) erasability: unified the coming and going with common rubber in a road of writing wiped examination six times, detect by an unaided eye after wiping, if no vestige person is " excellent " on the paper; If vestige is arranged but not obvious person for " very "; If the dark person of vestige be " in "; Basically wipe that not fall the person be " poor ".
(3) stability: with the printing ink sealing, at room temperature store, observe it and divide oily phenomenon. All can store half a year above do not have analyse oily person and be " excellent "; The oily phenomenon of branch was arranged in half a year but not serious person for " very "; Store analyse half a year oily severe patient for " in "; Storing first quarter moon just has the oily phenomenon person of branch to be " poor ".
Claims (26)
1, a kind of erasable printing ink, form by rubber (or mixture of rubber and resin), pigment, lubricant, low boiling point solvent and high boiling point dispersion medium, it is characterized in that wherein rubber accounts for 10～18% of printing ink gross weight, pigment 5～12%, lubricant 2～10%, rubber is 0.2～0.6: 1 with the ratio of low boiling point solvent weight; The high boiling point dispersion medium is 2～4: 1 with the ratio of pigment weight.
2, according to the said printing ink of claim 1, said lubricant is a lead stearate.
3, according to the said printing ink of claim 2, it is characterized in that wherein the consumption of lead stearate is 2～10%, be preferably 2～6%.
4, a kind of erasable printing ink is made up of rubber, pigment, lubricant, lower boiling rubber solvent and high boiling point dispersion medium, it is characterized in that wherein said lubricant is a lead stearate.
5, according to the said printing ink of claim 4, its compositing characteristic is: rubber content only accounts for 10～18% of total weight, pigment 5～12%, lower boiling rubber solvent 40～60%, high boiling point dispersion medium 15～30%.
6, according to claim 4 said printing ink, wherein the content of lead stearate is 2～10%, preferably 2～6%.
7,, it is characterized in that wherein said high boiling point dispersion medium is the mixture of neopentyl polyol ester or neopentyl polyol ester and dimixo-octyl phthalate according to claim 1,4 said printing ink.
8, according to the said printing ink of claim 7, wherein said neopentyl polyol ester is a trihydroxymethylpropanyl ester.
9, according to the said printing ink of claim 7, wherein said neopentyl polyol ester is a pentaerythritol ester.
10, a kind of erasable printing ink, form by rubber, pigment, lubricant, lower boiling rubber solvent and a high boiling point dispersion medium, it is characterized in that wherein said high boiling point dispersion medium is the mixture of neopentyl polyol ester or neopentyl polyol ester and dimixo-octyl phthalate.
11, according to the said printing ink of claim 10, its compositing characteristic is: rubber content only accounts for 10～18% of printing ink gross weight, pigment 5～12%, lower boiling rubber solvent 40～60%, lubricant 2～10%.
12, according to claim 7 or 10 said printing ink, wherein the content of the mixture of neopentyl polyol ester or polyol ester and dimixo-octyl phthalate is 15～30%, is preferably 19～25%.
13, according to claim 10 or 11 said printing ink, wherein said lubricant is a metallic soap.
14, according to the said printing ink of claim 13, wherein said metallic soap is lead stearate preferably.
15, according to the said printing ink of claim 14, wherein the content of lead stearate is 2～10%, preferably 2～6%.
16, a kind of is its component with the phosphorus benzene bis-acid potassium di-isooctyl, be added with the erasability printing ink of rubber, pigment, lubricant, lower boiling rubber solvent, it is characterized in that the weight ratio of each component is: rubber 10～18%, pigment 5～12%, lubricant 2～10%, lower boiling rubber solvent 40～60%.
17, according to the said printing ink of claim 16, wherein the content of dimixo-octyl phthalate is 15～30%, is preferably 19～25%.
18, according to the said printing ink of claim 16, wherein said lubricant is a lead stearate.
19, according to the said printing ink of claim 18, wherein the content of lead stearate is 2～10%, is preferably 2～6%.
20, according to claim 1～6,8～11,15～17 said printing ink, it is characterized in that wherein said lower boiling rubber solvent is a hydrocarbon-type oil, 60～150 ℃ of its boiling spreads are preferably 90～120 ℃.
21, according to the said printing ink of claim 7, it is characterized in that wherein said lower boiling rubber solvent is a hydrocarbon-type oil, its boiling spread is 60～150 ℃, is preferably 90～120 ℃.
22, according to the said printing ink of claim 12, it is characterized in that wherein said lower boiling rubber solvent is a hydrocarbon-type oil, its boiling spread is 60～150 ℃, is preferably 90～120 ℃.
23,, it is characterized in that wherein said pigment is carbon black according to claim 1,4,10,16 said printing ink.
24, according to the said printing ink of claim 7, it is characterized in that wherein said neopentyl polyol ester, its viscosity is less than 10
-5m
2/ S.
25, according to the said printing ink of claim 10, it is characterized in that wherein said neopentyl polyol ester, its viscosity is less than 10
-5m
2/ S.
26,, it is characterized in that it can be used for ballpoint pen and other ball writing implement according to claim 1,4,10,16 or 18 said printing ink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86100089A CN86100089B (en) | 1986-01-09 | 1986-01-09 | Composition of erasable printing ink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86100089A CN86100089B (en) | 1986-01-09 | 1986-01-09 | Composition of erasable printing ink |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86100089A true CN86100089A (en) | 1987-07-22 |
| CN86100089B CN86100089B (en) | 1988-09-28 |
Family
ID=4800882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86100089A Expired CN86100089B (en) | 1986-01-09 | 1986-01-09 | Composition of erasable printing ink |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86100089B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100580039C (en) * | 2007-09-13 | 2010-01-13 | 山西大学 | Dry-wiping white board marker ink |
| CN107033667A (en) * | 2017-05-04 | 2017-08-11 | 胡永辉 | A kind of erasable ball pen ink of oiliness |
| JP2020002292A (en) * | 2018-06-29 | 2020-01-09 | 株式会社パイロットコーポレーション | Ballpoint pen |
| CN112888750A (en) * | 2018-09-24 | 2021-06-01 | 地板工业有限公司 | Ceramic inks for inkjet digital printing |
-
1986
- 1986-01-09 CN CN86100089A patent/CN86100089B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100580039C (en) * | 2007-09-13 | 2010-01-13 | 山西大学 | Dry-wiping white board marker ink |
| CN107033667A (en) * | 2017-05-04 | 2017-08-11 | 胡永辉 | A kind of erasable ball pen ink of oiliness |
| JP2020002292A (en) * | 2018-06-29 | 2020-01-09 | 株式会社パイロットコーポレーション | Ballpoint pen |
| CN112888750A (en) * | 2018-09-24 | 2021-06-01 | 地板工业有限公司 | Ceramic inks for inkjet digital printing |
| CN112888750B (en) * | 2018-09-24 | 2023-09-08 | 地板工业有限公司 | Ceramic ink for inkjet digital printing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN86100089B (en) | 1988-09-28 |
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