阅读说明：本技术 零voc胶印无醇润版液 (zero-VOC offset alcohol-free fountain solution ) 是由 周克毅 于 2021-08-03 设计创作，主要内容包括：本发明涉及平版印刷技术领域,且公开了零VOC胶印无醇润版液,包括以下重量份的组分：芳香族基磺酸钠2～8份、柠檬酸1～6份、硝酸铵1～5份、葡萄糖酸钠1～5份、支化烷基硫酸钠0.1～0.6份、改性阿拉伯树胶0.5～4份、月桂醇聚氧乙烯醚2～8份、2,4,7,9-四甲基-5-癸炔-4,7-二醇0.1～0.2份、苯并三唑0.05～0.2份、防腐杀菌剂0.02～0.15份、复合功能助剂2～4份、水60～70份,本发明中的零VOC胶印无醇润版液具有优异的清洗和润湿效果,使用中无挥发物的产生,绿色环保,且工作过程中浓度稳定,极大的减少了润版液的补加次数和补加量,降低了人工成本和印刷成本。(The invention relates to the technical field of lithographic printing, and discloses a zero-VOC offset alcohol-free fountain solution which comprises the following components in parts by weight: 2-8 parts of aromatic sodium sulfonate, 1-6 parts of citric acid, 1-5 parts of ammonium nitrate, 1-5 parts of sodium gluconate, 0.1-0.6 part of branched alkyl sodium sulfate, 0.5-4 parts of modified gum arabic, 2-8 parts of lauryl alcohol polyoxyethylene ether, 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol 0.1-0.2 part, 0.05-0.2 part of benzotriazole, 0.02-0.15 part of an antiseptic bactericide, 2-4 parts of a composite functional assistant and 60-70 parts of water.)

1. The zero-VOC offset alcohol-free fountain solution is characterized by comprising the following components in parts by weight: 2-8 parts of aromatic sodium sulfonate, 1-6 parts of citric acid, 1-5 parts of ammonium nitrate, 1-5 parts of sodium gluconate, 0.1-0.6 part of branched alkyl sodium sulfate, 0.5-4 parts of modified gum arabic, 2-8 parts of lauryl alcohol polyoxyethylene ether, 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol 0.1-0.2 part, 0.05-0.2 part of benzotriazole, 0.02-0.15 part of an anticorrosive bactericide, 2-4 parts of a composite functional assistant and 60-70 parts of water.

2. The zero VOC offset alcohol-free fountain solution of claim 1, wherein: the paint comprises the following components in parts by weight: 6 parts of aromatic sodium sulfonate, 4 parts of citric acid, 3 parts of ammonium nitrate, 3 parts of sodium gluconate, 0.5 part of branched alkyl sodium sulfate, 3 parts of modified gum arabic, 5 parts of polyoxyethylene lauryl ether, 0.2 part of 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol, 0.15 part of benzotriazole, 0.12 part of antiseptic bactericide, 3 parts of composite functional auxiliary agent and 66 parts of water.

3. The zero VOC offset alcohol-free fountain solution of claim 1, wherein: the paint comprises the following components in parts by weight: 7 parts of aromatic sodium sulfonate, 5 parts of citric acid, 4 parts of ammonium nitrate, 4 parts of sodium gluconate, 0.4 part of branched alkyl sodium sulfate, 2.5 parts of modified gum arabic, 5 parts of lauryl alcohol polyoxyethylene ether, 0.15 part of 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol, 0.1 part of benzotriazole, 0.1 part of anticorrosive bactericide, 3.5 parts of composite functional auxiliary agent and 68 parts of water.

4. The zero VOC offset alcohol-free fountain solution of claim 1, wherein: the aromatic group in the aromatic sodium sulfonate is disubstituted phenyl, and the lengths of the two substituents are respectively C_1～4And C_2～6Straight or branched chain alkyl.

5. The zero VOC offset alcohol-free fountain solution of claim 1, wherein: the branched alkyl of the branched alkyl sodium sulfate is C_5～10The isomerized alkyl group of (1).

6. The zero VOC offset alcohol-free fountain solution of claim 1, wherein: the composite functional additive comprises the following components in parts by weight: c_2～510-15 parts of hydroxyl-containing organic acid, 0.5-1.2 parts of surfactant, 8-12 parts of inorganic salt and the balance of water.

7. The zero VOC offset alcohol-free fountain solution of claim 6, wherein: the hydroxyl-containing organic acid contains at least one carboxyl group and one alpha hydroxyl group in the molecule.

8. The zero VOC offset alcohol-free fountain solution of claim 6, wherein: the inorganic salt is sulfate.

9. The zero VOC offset alcohol-free fountain solution of claim 6, wherein: the surfactant is alkylolamide.

Technical Field

The invention relates to the technical field of lithographic printing, in particular to a zero VOC offset alcohol-free fountain solution.

Background

Printing is considered a highly polluting industry and in order to reduce organic evaporation, it is necessary to use alcohol-free fountain solutions for green printing. Almost all the alcohol-free fountain solutions in the industry at present use organic solvents such as alcohol ethers to replace alcohol, and some alcohol ethers are more volatile or volatile harmful than alcohol or isopropanol. The original fundamental purpose of removing alcohol or isopropanol is not achieved. Generally, the volatility of alcohol ether solvents is less than that of ethanol or isopropanol, so that the addition amount of alcohol ether solvents in a fountain solution can be reduced, but no organic matter is volatilized, so that the alcohol ether solvents also cause great pollution to air.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the zero-VOC offset alcohol-free fountain solution which has the advantages of quantitatively adding cement and sand and stone, automatically adding water and the like, and solves the problem that cement is wasted due to a cement stirring device on the market at present.

(II) technical scheme

In order to realize the purposes of reducing the volatilization of organic matters in the fountain solution and reducing the pollution to the air and the environment, the invention provides the following technical scheme: the zero-VOC offset alcohol-free fountain solution comprises the following components in parts by weight: 2-8 parts of aromatic sodium sulfonate, 1-6 parts of citric acid, 1-5 parts of ammonium nitrate, 1-5 parts of sodium gluconate, 0.1-0.6 part of branched alkyl sodium sulfate, 0.5-4 parts of modified gum arabic, 2-8 parts of lauryl alcohol polyoxyethylene ether, 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol 0.1-0.2 part, 0.05-0.2 part of benzotriazole, 0.02-0.15 part of an anticorrosive bactericide, 2-4 parts of a composite functional assistant and 60-70 parts of water.

Preferably, the composition comprises the following components in parts by weight: 6 parts of aromatic sodium sulfonate, 4 parts of citric acid, 3 parts of ammonium nitrate, 3 parts of sodium gluconate, 0.5 part of branched alkyl sodium sulfate, 3 parts of modified gum arabic, 5 parts of polyoxyethylene lauryl ether, 0.2 part of 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol, 0.15 part of benzotriazole, 0.12 part of antiseptic bactericide, 3 parts of composite functional auxiliary agent and 66 parts of water.

Preferably, the composition comprises the following components in parts by weight: 7 parts of aromatic sodium sulfonate, 5 parts of citric acid, 4 parts of ammonium nitrate, 4 parts of sodium gluconate, 0.4 part of branched alkyl sodium sulfate, 2.5 parts of modified gum arabic, 5 parts of lauryl alcohol polyoxyethylene ether, 0.15 part of 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol, 0.1 part of benzotriazole, 0.1 part of anticorrosive bactericide, 3.5 parts of composite functional auxiliary agent and 68 parts of water.

Preferably, the aromatic group in the aromatic sodium sulfonate is a disubstituted phenyl group, and the lengths of the two substituents are respectively C_1～4And C_2～6Straight or branched chain alkyl.

Preferably, the branched alkyl group of the branched sodium alkyl sulfate is C_5～10The isomerized alkyl group of (1).

Preferably, the composite functional auxiliary comprises the following components in parts by weight: c_2～510-15 parts of hydroxyl-containing organic acid, 0.5-1.2 parts of surfactant, 8-12 parts of inorganic salt and the balance of water.

Preferably, the hydroxyl group-containing organic acid contains at least one carboxyl group and one α -hydroxyl group in the molecule.

Preferably, the inorganic salt is a sulfate salt.

Preferably, the surfactant is an alkylolamide.

(III) advantageous effects

Compared with the prior art, the invention provides the zero-VOC offset alcohol-free fountain solution, which has the following beneficial effects:

1. the hydroxyl-containing organic acid in the composite functional auxiliary agent is matched with inorganic salt (sulfate) and alkylolamide, so that a chelate can be formed for metal ions, the dissolving and washing capacities are greatly improved, the cleaning effect and partial wetting effect of an alcohol ether organic solvent which is usually added in fountain solution can be replaced, and the zero-VOC offset printing alcohol-free fountain solution has excellent cleaning and wetting effects;

2. the addition amount of the fountain solution in actual use is 5-6%, the preparation cost is 65-70% of that of the existing common alcohol-free fountain solution, the printing cost can be greatly reduced, no volatile matter is generated in the actual use of a printing machine, the concentration is stable in the working process, the replenishment times and the replenishment amount of the fountain solution are greatly reduced, the labor cost and the printing cost are further reduced, and the economic benefit is improved;

3. the invention uses some inorganic water-soluble compounds and organic salt parts in the alcohol-free fountain solution to replace the cleaning and wetting action of the water-soluble organic solvent in the existing fountain solution, and can better clean and wet the printing plate surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Zero VOC offset printing alcohol-free fountain solution and packageThe composition comprises the following components in parts by weight: 4 parts of aromatic sodium sulfonate, 3 parts of citric acid, 2 parts of ammonium nitrate, 3 parts of sodium gluconate, 0.2 part of branched alkyl sodium sulfate, 1 part of modified gum arabic, 2 parts of polyoxyethylene lauryl ether, 0.1 part of 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol, 0.1 part of benzotriazole, 0.05 part of antiseptic bactericide, 2-4 parts of composite functional auxiliary agent and 60 parts of water, wherein the aromatic group in the aromatic sodium sulfonate is a disubstituted phenyl group, and the lengths of the two substituent groups are respectively C_1～4And C_2～6A linear or branched alkyl group; branched alkyl of the branched sodium alkyl sulfate is C_5～10An isomerized alkyl group of (a); the composite functional additive comprises the following components in parts by weight: 10 parts of tartaric acid, 0.5 part of alkylolamide, 8 parts of sulfate and the balance of water.

Example two

The zero-VOC offset alcohol-free fountain solution comprises the following components in parts by weight: 6 parts of aromatic sodium sulfonate, 4 parts of citric acid, 3 parts of ammonium nitrate, 3 parts of sodium gluconate, 0.5 part of branched alkyl sodium sulfate, 3 parts of modified gum arabic, 5 parts of polyoxyethylene lauryl ether, 0.2 part of 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol, 0.15 part of benzotriazole, 0.12 part of antiseptic bactericide, 3 parts of composite functional auxiliary agent and 66 parts of water, wherein the aromatic group in the aromatic sodium sulfonate is a disubstituted phenyl group, and the lengths of the two substituent groups are respectively C_1～4And C_2～6A linear or branched alkyl group; branched alkyl of the branched sodium alkyl sulfate is C_5～10An isomerized alkyl group of (a); the composite functional additive comprises the following components in parts by weight: 12 parts of gluconic acid, 0.8 part of alkylolamide, 9 parts of sulfate and the balance of water, wherein the molecule of the organic acid containing hydroxyl contains at least one carboxyl and one alpha hydroxyl.

EXAMPLE III

The zero-VOC offset printing alcohol-free fountain solution comprises, by weight, 7 parts of aromatic sodium sulfonate, 5 parts of citric acid, 4 parts of ammonium nitrate, 4 parts of sodium gluconate, 0.4 part of branched alkyl sodium sulfate, 2.5 parts of modified gum arabic, 5 parts of lauryl alcohol polyoxyethylene ether, 0.15 part of 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol, 0.1 part of benzotriazole, 0.1 part of an antiseptic bactericide, 3.5 parts of a composite functional assistant and 68 parts of water, wherein the aromatic sodium sulfonate is used as a componentThe aromatic group in the sodium arylsulfonate is disubstituted phenyl, and the lengths of the two substituents are respectively C_1～4And C_2～6A linear or branched alkyl group; branched alkyl of the branched sodium alkyl sulfate is C_5～10An isomerized alkyl group of (a); the composite functional additive comprises the following components in parts by weight: 13 parts of glycolic acid, 1 part of alkylolamide, 10 parts of sulfate and the balance of water, wherein the molecule of the organic acid containing hydroxyl groups contains at least one carboxyl group and one alpha hydroxyl group.

Example four

The zero-VOC offset alcohol-free fountain solution comprises the following components in parts by weight: 6 parts of aromatic sodium sulfonate, 6 parts of citric acid, 5 parts of ammonium nitrate, 5 parts of sodium gluconate, 0.5 part of branched alkyl sodium sulfate, 4 parts of modified gum arabic, 7 parts of polyoxyethylene lauryl ether, 0.2 part of 2,4,7, 9-tetramethyl-5-decyne-4, 7-diol, 0.2 part of benzotriazole, 0.15 part of antiseptic bactericide, 4 parts of composite functional auxiliary agent and 70 parts of water, wherein the aromatic group in the aromatic sodium sulfonate is a disubstituted phenyl group, and the lengths of the two substituents are respectively C_1～4And C_2～6A linear or branched alkyl group; branched alkyl of the branched sodium alkyl sulfate is C_5～10An isomerized alkyl group of (a); the composite functional additive comprises the following components in parts by weight: 15 parts of vinyl glycolic acid, 1.2 parts of alkylolamide, 12 parts of sulfate and the balance of water, wherein the hydroxyl-containing organic acid contains at least one carboxyl group and one alpha hydroxyl group in the molecule.

The four groups of embodiments are prepared according to the method of firstly preparing functional auxiliary agents and then mixing and preparing fountain solutions to obtain four kinds of zero-VOC offset printing alcohol-free fountain solutions, the four kinds of zero-VOC offset printing alcohol-free fountain solutions are respectively marked as No. 1, No. 2, No. 3 and No. 4, the fountain solutions purchased in the market are used as No. 5, the No. 1-5 fountain solutions are respectively placed in a closed box and are placed in a photoionization detector, the detection result is checked and recorded after 3 hours, and the following results are obtained:

reference numerals	1	2	3	4	5
						Volatile gas detection results	Is free of	Is free of	Is free of	Is free of	Is provided with

The fountain solution prepared according to the formula disclosed by the invention has the advantages that volatile gas is not generated, raw materials capable of generating organic volatile matters can be thoroughly removed, the environmental friendliness of the fountain solution is improved, and in addition, the overall formula proportion of the fountain solution can be reasonably adjusted on the premise of ensuring the normal use requirement in production.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.