CN116179069B - Ammonia-free low-odor retention white glue and preparation method thereof - Google Patents

Ammonia-free low-odor retention white glue and preparation method thereof Download PDF

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CN116179069B
CN116179069B CN202211695453.1A CN202211695453A CN116179069B CN 116179069 B CN116179069 B CN 116179069B CN 202211695453 A CN202211695453 A CN 202211695453A CN 116179069 B CN116179069 B CN 116179069B
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sulfonate
parts
emulsion
ammonia
dihydric alcohol
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CN116179069A (en
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刘秀金
张兴运
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Guangdong Tingyi Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/06—Polyurethanes from polyesters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/46—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen
    • C08G18/4676—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen containing sulfur
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

The invention relates to the technical field of latex, in particular to the field of IPC C09D107, more particularly, relates to an ammonia-free low-odor white-remaining glue and a preparation method thereof. In terms of the weight portions of the components, the components comprise: 50-70 parts of film-forming emulsion, 10-20 parts of stripping agent, 1-3 parts of water-based pigment and 7-40 parts of solvent. The molar ratio of the monoacid to the sulfonate glycol is (3-16): 1, the prepared white glue has better film forming performance; the introduction of sulfonate dihydric alcohol can promote emulsification and reduce the smell of the white glue; the chain extender is 1, 4-butanediol, and the mol ratio of sulfonate dihydric alcohol to the chain extender is 1: and 0.003, the erasing performance of the white glue is further improved.

Description

Ammonia-free low-odor white-remaining glue and preparation method thereof
Technical Field
The invention relates to the technical field of latex, in particular to the field of IPCC09D107, and more particularly relates to ammonia-free low-odor white-remaining glue and a preparation method thereof.
Background
The white-remaining glue is also called as covering liquid, and is a rubber emulsion, and has quick-drying property, a layer of anti-soaking glue film is formed after the white-remaining glue is coated on drawing paper and dried, when drawing water color drawing, the water color can not be soaked in, white background and light pale color layer can be clearly left, most of the white-remaining glue on the market at present is prepared by taking natural latex as a main component and adding other auxiliary components, however, fresh natural latex can be quickly spoiled and deteriorated if not treated, so that a producer can usually add ammonia to ensure that the white-remaining glue can be stably stored for a long time. The addition of ammonia can make the product have a sharp ammonia smell, and meanwhile, the ammonia can flow into the environment after the white glue is used and erased, so that a certain burden is caused to the environment.
CN105670398B discloses a white-keeping glue and its preparation method, which comprises, by mass, 55% -65% of natural latex, 20% -30% of stripper, and the balance of water; sequentially adding the natural latex and the stripping agent into a beaker, stirring and mixing uniformly, and then adding water to obtain white glue; wherein the stripping agent comprises 10-35% of polyalkyl acrylate, 5-10% of organic solvent, 4-6% of emulsifying agent and the balance of water. The white glue is easy to peel off from the drawing paper, does not stick to the pen, and can keep the cleanness and the non-damage of the drawing and the painting pen; meanwhile, the formula is simple and environment-friendly, no harm is caused to human bodies, the synthesis method is simple and easy to operate, and the method is safe and reliable, but excessive natural latex is used, so that the storage stability is affected to a certain extent.
Disclosure of Invention
The invention provides an ammonia-free low-odor white-retaining adhesive and a preparation method thereof, and the prepared white-retaining adhesive achieves the ammonia-free low-odor effect by adjusting the proportion of components, and has excellent writing smoothness and easy erasing property.
In order to achieve the purpose of the invention, the first aspect of the invention provides ammonia-free low-odor white-remaining glue, which comprises the following components in parts by weight: 50-70 parts of film-forming emulsion, 10-20 parts of stripping agent, 1-3 parts of water-based pigment and 7-40 parts of solvent.
Preferably, the ammonia-free low-odor white-remaining glue comprises the following components in parts by weight: 60 parts of film-forming emulsion, 15 parts of stripping agent, 1 part of water-based pigment and 24 parts of solvent.
The film-forming emulsion comprises the following raw materials: monoacids, sulfonate dihydric alcohol, a catalyst 1, a catalyst 2, diisocyanate, a chain extender and deionized water.
The monoacid comprises one or more of 1-hydroxy-1-cyclopropanecarboxylic acid, 2-hydroxy-3-butenoic acid, 6-hydroxycaproic acid, 2-hydroxyisobutyric acid, 3-hydroxybutyric acid, 2-hydroxy-n-butyric acid, glyceric acid, 2-hydroxy-3-methylbutanoic acid, 2-hydroxy-2-methylbutanoic acid, 2-hydroxypentanoic acid, 3-hydroxypentanoic acid, 4-hydroxypentanoic acid, 2-hydroxypentanoic acid, 1-hydroxycyclohexanecarboxylic acid, 2-hydroxy-3-methylpentanoic acid and 2-trifluoromethyl-2-hydroxypropionic acid.
Preferably, the monoacid comprises one or more of 6-hydroxycaproic acid, 1-hydroxy-1-cyclopropanecarboxylic acid and 2-hydroxy-3-methylpentanoic acid.
Further preferably, the monoacid includes 6-hydroxycaproic acid (CAS: 1191-25-9).
The preparation raw materials of the sulfonate dihydric alcohol comprise: small molecule diols, dicarboxyl sulfonates.
The small molecular dihydric alcohol comprises one or more of 3-methyl-1, 5-pentanediol, neopentyl glycol, 1, 5-pentanediol, diethyl pentanediol, 1, 6-hexanediol, trimethyl pentanediol and ethyl hexanediol.
Preferably, the small molecule diol comprises 1, 5-pentanediol.
The dicarboxy sulfonate comprises at least one of dicarboxy sulfonate potassium salt, dicarboxy sulfonate ammonium salt and dicarboxy sulfonate sodium salt.
Preferably, the dicarboxy sulfonate includes sodium isophthalic acid-5-sulfonate (CAS: 6362-79-4)).
Preferably, the mole ratio of the small molecular dihydric alcohol to the dicarboxyl sulfonate is (3-5): 1.
further preferably, the molar ratio of the small molecule dihydric alcohol to the dicarboxy sulfonate is 3:1.
the preparation of the sulfonate dihydric alcohol comprises the following steps: mixing small molecular dihydric alcohol and dicarboxyl sulfonate, dissolving at 90-95deg.C for 1-3 hr, and reacting at 160-190 deg.C for 1-2 hr under nitrogen atmosphere.
Preferably, the preparation of the sulfonate glycol comprises: 1, 5-pentanediol and isophthalic acid-5-sodium sulfonate are mixed, dissolved for 2 hours at 95 ℃, and reacted for 1 hour at 180 ℃ in nitrogen atmosphere.
Preferably, the catalyst 1 comprises at least one of pyridine p-toluenesulfonate and p-toluenesulfonic acid.
Further preferably, the catalyst 1 comprises p-toluenesulfonic acid (CAS: 104-15-4).
The diisocyanate comprises one or more of isophorone diisocyanate, hexamethylene diisocyanate, pentamethylene diisocyanate, 4' -dicyclohexylmethane diisocyanate, 1, 4-cyclohexyl diisocyanate, norbornane diisocyanate, 2-dimethyl-pentanediisocyanate, 1, 3-butadiene-1, 4-diisocyanate, 2, 4-trimethyl-1, 6-hexamethylene diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, xylene diisocyanate and 2, 4-trimethyl-1, 6-hexamethylene diisocyanate.
Preferably, the diisocyanate comprises toluene diisocyanate and hexamethylene diisocyanate, and the weight ratio of toluene diisocyanate to hexamethylene diisocyanate is 1: (0.5-2).
Further preferably, the diisocyanate comprises toluene diisocyanate (CAS: 584-84-9) and hexamethylene diisocyanate (CAS: 822-06-0), and the weight ratio of toluene diisocyanate to hexamethylene diisocyanate is 1:1.
preferably, the catalyst 2 comprises one or more of bismuth methylsulfonate, dibutyl tin dilaurate, ethyltin octoate and zinc oxalate.
Further preferably, the catalyst 2 comprises dibutyltin dilaurate (CAS: 77-58-7).
The chain extender comprises one or more of ethylene glycol, 1, 4-butanediol, propylene glycol, diethylene glycol, hydroquinone dihydroxyethyl ether, 1, 4-butanediol-2 sodium sulfonate and 1,2 dihydroxy 3 sodium propane sulfonate.
Preferably, the chain extender comprises hydroquinone dihydroxyethyl ether (CAS: 104-38-1).
The applicant found that the molar ratio of monoacid to sulfonate diol was (3-16): 1, the prepared white glue has better film forming performance, presumably the possible specific mole ratio of monoacid to sulfonate dihydric alcohol, the molecular weight of the prepared polyester can be regulated and controlled to be 1000-3000, the specific molecular weight promotes the compatibility of the polyester with a stripping agent and pigment in a system, and the entanglement effect among high polymer chain segments is promoted. Further researches show that the introduction of the sulfonate dihydric alcohol can promote emulsification, can reduce the smell of the white glue, can realize self-emulsification without adding an amine salt forming agent because the polyol contains sulfonate groups, and simultaneously has no reduction in film forming performance, so that the use of the amine salt forming agent is greatly reduced.
Further studies have found that the chain extender is 1, 4-butanediol, and the molar ratio of sulfonate glycol to chain extender is 1: when 0.003, the erasing performance of the white-reserved glue is further improved, probably due to the fact that the content of 1, 4-butanediol is increased, the relative content of hard chain segments in a molecular chain is increased, the polarity of pure ester hard chain segments is similar to that of the soft chain segment polycaprolactone polyol, the compatibility is good, more hard chain segments are dispersed in a soft segment region, the microphase separation degree is reduced along with the increase of the content of the hard chain segments, the glass transition temperature is increased, and therefore the white-reserved glue is easier to erase, on the other hand, the content of the hard chain segments is increased, the hydrogen bond content between the hard chain segments is increased, meanwhile, the hydrogen bond content formed between the soft chain segments is increased, more hard chain segments are dissolved in the soft chain segments, the compatibility is further increased, the differential phase region is reduced, entanglement among high molecular chain segments is improved, and the white-reserved glue can be torn off in strips.
The molar ratio of the monoacid to the sulfonate glycol is (3-16): 1.
preferably, the molar ratio of the monoacid to the sulfonate diol is 6:1.
the mol ratio of the sulfonate dihydric alcohol to the chain extender is 1: (0.003-0.004).
Preferably, the molar ratio of the sulfonate glycol to the chain extender is 1:0.003.
the molar ratio of the sulfonate dihydric alcohol to the diisocyanate is 1: (1.2-1.8).
Preferably, the molar ratio of sulfonate glycol to diisocyanate is 1:1.5.
the preparation of the film-forming emulsion comprises the following steps:
step 1: adding monobasic acid, sulfonate dihydric alcohol and a catalyst 1, and reacting to obtain a solution 1;
step 2: adding a catalyst 2 and diisocyanate into the solution 1, monitoring the content of isocyanate groups, and adding a chain extender for reaction;
step 3: adding deionized water, stirring uniformly, and regulating the solid content of the film-forming emulsion.
The reaction temperature in the step 1 is 170-190 ℃ and the reaction time is 2-6h.
Preferably, the temperature of the reaction in the step 1 is 180 ℃, and the reaction time is 4 hours.
The solid content of the film-forming emulsion is 30-60wt%.
Further preferably, the solids content of the film-forming emulsion is 40 to 50wt%.
Still more preferably, the solids content of the film-forming emulsion is 50wt%.
The stripping agent comprises one or more of a polyalkyl acrylate emulsion, a high molecular wax emulsion, a mineral oil emulsion and a vegetable oil emulsion.
Preferably, the stripping agent comprises a polyalkyl acrylate emulsion and a high molecular wax emulsion, wherein the weight ratio of the polyalkyl acrylate emulsion to the high molecular wax emulsion is 1: (2-5).
Further preferably, the stripping agent comprises a polyalkyl acrylate emulsion and a high molecular wax emulsion, wherein the weight ratio of the polyalkyl acrylate emulsion to the high molecular wax emulsion is 1:4.
preferably, the average viscosity of the polyalkyl acrylate emulsion is 1000-4000 Pa.s.
Further preferably, the average viscosity of the polyalkyl acrylate emulsion is 2500 Pa.s, which is purchased from tin-free long-time corrosion-resistant materials Co.
Preferably, the polymer wax emulsion comprises an oxidized polyethylene wax emulsion available from sandisk bang polymer materials, inc.
The color of the white glue can be blended according to red, blue and blue.
Preferably, the aqueous pigment comprises red (BASF Xfast 3855), blue (BASF Xfast 6875), yellow (BASF Xfast 1256), all available from Shanghai cosmetic industries, inc.
Preferably, the solvent comprises one or more of ethanol, acetone and petroleum ether.
Further preferably, the solvent comprises ethanol.
The invention provides ammonia-free low-odor white-remaining glue and a preparation method thereof, wherein the preparation method comprises the following steps of:
s1, sequentially adding film-forming emulsion, stripping agent and water-based pigment, and stirring and mixing uniformly at a high speed to obtain a mixture 1;
s2, adding the solvent into the mixture 1, and stirring and mixing uniformly at a low speed.
Preferably, the high-speed stirring speed is 2000-4000rpm.
Further preferably, the high-speed stirring rotation speed is 3500rpm.
Preferably, the low-speed stirring rotation speed is 100-400rpm.
Further preferably, the low-speed stirring rotation speed is 150rpm.
The beneficial effects are that:
1. the molar ratio of the monoacid to the sulfonate glycol is (3-16): 1, the prepared white glue has better
Film Forming Property
2. The sulfonate dihydric alcohol is introduced to promote emulsification and reduce the smell of the white glue.
3. The chain extender is 1, 4-butanediol, and the mol ratio of sulfonate dihydric alcohol to the chain extender is 1: and 0.003, the erasing performance of the white glue is further improved.
Detailed Description
Example 1
The ammonia-free low-odor white-remaining glue comprises the following components in parts by weight: 60 parts of film-forming emulsion, 15 parts of stripping agent, 1 part of water-based pigment and 24 parts of solvent.
The film-forming emulsion comprises the following raw materials: monoacids, sulfonate dihydric alcohol, a catalyst 1, a catalyst 2, diisocyanate, a chain extender and deionized water.
The monoacid includes 6-hydroxycaproic acid (CAS: 1191-25-9).
The preparation raw materials of the sulfonate dihydric alcohol comprise: small molecule diols, dicarboxyl sulfonates.
The small molecule dihydric alcohol comprises 1, 5-pentanediol.
The dicarboxy sulfonate includes sodium isophthalic acid-5-sulfonate (CAS: 6362-79-4)).
The mole ratio of the small molecular dihydric alcohol to the dicarboxyl sulfonate is 3:1.
the preparation of the sulfonate dihydric alcohol comprises the following steps: mixing small molecular dihydric alcohol and dicarboxyl sulfonate, dissolving at 95deg.C for 2 hr, and reacting at 180deg.C for 1 hr under nitrogen atmosphere.
The catalyst 1 comprises p-toluenesulfonic acid (CAS: 104-15-4).
The catalyst 2 comprises dibutyltin dilaurate (CAS: 77-58-7).
The diisocyanate comprises toluene diisocyanate (CAS: 584-84-9) and hexamethylene diisocyanate (CAS: 822-06-0), and the weight ratio of the toluene diisocyanate to the hexamethylene diisocyanate is 1:1.
the chain extender comprises hydroquinone dihydroxyethyl ether (CAS: 104-38-1).
The molar ratio of the monoacid to the sulfonate dihydric alcohol is 6:1.
the mol ratio of the sulfonate dihydric alcohol to the chain extender is 1:0.003.
the molar ratio of the sulfonate dihydric alcohol to the diisocyanate is 1:1.5.
the ratio of the catalyst 1 to the monoacid is 0.001:1.
Catalyst 2 and diol are 0.08:100.
The preparation of the film-forming emulsion comprises the following steps:
step 1: adding monobasic acid, sulfonate dihydric alcohol and a catalyst 1, and reacting to obtain a solution 1;
step 2: adding a catalyst 2 and diisocyanate into the solution 1, and adding a chain extender for reaction when the content of isocyanate groups is monitored to be less than 8 percent (near infrared spectroscopy);
step 3: adding deionized water, stirring uniformly, and regulating the solid content of the film-forming emulsion.
The reaction temperature in the step 1 is 180 ℃, and the reaction time is 4 hours.
The solids content of the film-forming emulsion was 50wt%.
The stripping agent comprises a polyalkyl acrylate emulsion and a high molecular wax emulsion, wherein the weight ratio of the polyalkyl acrylate emulsion to the high molecular wax emulsion is 1:4.
the average viscosity of the polyalkyl acrylate emulsion is 2500 Pa.s, and the polyalkyl acrylate emulsion is purchased from tin-free long-time corrosion-resistant materials limited company.
The polymer wax emulsion comprises oxidized polyethylene wax emulsion, which is purchased from Cheng bang polymer materials Co., dongguan city.
The solvent comprises ethanol.
The aqueous pigment included, red (BASF Xfast 3855), purchased from Shanghai fine cosmetic chemicals limited.
An ammonia-free low-odor white-remaining glue and a preparation method thereof, comprising the following steps:
s1, sequentially adding film-forming emulsion, stripping agent and water-based pigment, and stirring and mixing uniformly at a high speed to obtain a mixture 1;
s2, adding the solvent into the mixture 1, and stirring and mixing uniformly at a low speed.
The high-speed stirring rotation speed is 3500rpm.
The low speed stirring speed was 150rpm.
Example 2
The detailed description is the same as example 1; except that in example 2:
the molar ratio of monoacid to sulfonate dihydric alcohol is 8:1.
the aqueous pigment included, blue (BASF Xfast 6875), available from Shanghai fine pigment chemical company, inc.
Example 3
The detailed description is the same as example 1; except that in example 3:
the ammonia-free low-odor white-remaining glue comprises the following components in parts by weight: 65 parts of film-forming emulsion, 13 parts of stripping agent, 1 part of water-based pigment and 30 parts of solvent.
The aqueous pigment comprises the aqueous pigment which comprises red (BASF Xfast 3855), blue (BASF Xfast 6875), yellow (BASF Xfast 1256) and the weight ratio of red, blue and yellow is 1:1:1, all from Shanghai cosmetic industries, inc.
Comparative example 1
The detailed description is the same as example 1; except that in comparative example 1:
the mol ratio of the sulfonate dihydric alcohol to the chain extender is 1:0.001.
comparative example 2
The detailed description is the same as example 1; except that in comparative example 2:
the molar ratio of the monoacid to the sulfonate dihydric alcohol is 3:1.
comparative example 3
The detailed description is the same as example 1; except that in comparative example 3:
the mol ratio of the sulfonate dihydric alcohol to the chain extender is 1:0.006.
the molar ratio of the sulfonate dihydric alcohol to the diisocyanate is 1:2.
performance test method
The white gums obtained in examples 1-3 and comparative examples 1-3 were subjected to performance testing, and the test data are presented in Table 1.
1) Natural drying rate test: the white glue obtained in the example was used to paint on a drawing paper. The evaluation criteria were a:10-15 minutes; b:15-25 minutes; c: greater than 25 minutes.
2) Cleaning test: and (5) removing the white glue coated on the paper. Evaluation criteria, a: the pigskin is rubbed for 1 to 2 times, and the film can be torn off in strips; b: the pigskin is rubbed for 3-5 times, and the film can be intermittently torn off; c:
the film can not be torn off in strips after being rubbed with pigskin glue for more than 5 times.
Performance test data
TABLE 1
Drying speed test Clean-up test
Example 1 A B
Example 2 A A
Example 3 A A
Comparative example 1 B B
Comparative example 2 C C
Comparative example 3 B C

Claims (5)

1. The ammonia-free low-odor white-remaining glue is characterized by comprising the following components in parts by weight: 50-70 parts of film-forming emulsion, 10-20 parts of stripping agent, 1-3 parts of water-based pigment and 7-40 parts of solvent;
the film-forming emulsion comprises the following raw materials: monoacids, sulfonate dihydric alcohol, a catalyst 1, a catalyst 2, diisocyanate, a chain extender and deionized water;
the molar ratio of the monoacid to the sulfonate glycol is (3-16): 1, a step of;
the mol ratio of the sulfonate dihydric alcohol to the chain extender is 1: (0.003-0.004);
the molar ratio of the sulfonate dihydric alcohol to the diisocyanate is 1: (1.2-1.8);
the preparation of the film-forming emulsion comprises the following steps:
step 1: adding monobasic acid, sulfonate dihydric alcohol and a catalyst 1, and reacting to obtain a solution 1;
step 2: adding a catalyst 2 and diisocyanate into the solution 1, monitoring the content of isocyanate groups, and adding a chain extender for reaction;
step 3: adding deionized water and stirring uniformly.
2. The ammonia free low odor white latex of claim 1, wherein said stripper comprises one or more of a polyalkyl acrylate emulsion, a polymeric wax emulsion, a mineral oil emulsion, and a vegetable oil emulsion.
3. The ammonia free low odor white gum of claim 1, wherein the temperature of the reaction in step 1 is 170-190 ℃ and the reaction time is 2-6 hours.
4. An ammonia free low odor white gum according to claim 1, wherein said film forming emulsion has a solids content of 30-60wt%.
5. Preparation of an ammonia-free low odor white gum according to any of claims 1-4, characterized by the following steps:
s1, sequentially adding film-forming emulsion, stripping agent and water-based pigment, and stirring and mixing uniformly at a high speed to obtain a mixture 1;
s2, adding the solvent into the mixture 1, and stirring and mixing uniformly at a low speed.
CN202211695453.1A 2022-12-28 2022-12-28 Ammonia-free low-odor retention white glue and preparation method thereof Active CN116179069B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6352768B1 (en) * 1999-03-02 2002-03-05 Avery Dennison Corporation Printable release coatings and stamp constructions
CN103626953A (en) * 2013-10-29 2014-03-12 中科院广州化学有限公司 Sulfonate type water-based polyurethane emulsion and preparation method thereof
EP3141569A1 (en) * 2015-09-08 2017-03-15 Henkel AG & Co. KGaA Cold seal adhesives based on aqueous polyurethane dispersions
CN106634767A (en) * 2016-12-15 2017-05-10 陕西科技大学 Ammonia-free acrylic acid/alkyd resin art masking fluid, and preparation method and application thereof
CN110330618A (en) * 2019-07-30 2019-10-15 嘉兴学院 Aqueous polyurethane emulsion, preparation method and application

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6352768B1 (en) * 1999-03-02 2002-03-05 Avery Dennison Corporation Printable release coatings and stamp constructions
CN103626953A (en) * 2013-10-29 2014-03-12 中科院广州化学有限公司 Sulfonate type water-based polyurethane emulsion and preparation method thereof
EP3141569A1 (en) * 2015-09-08 2017-03-15 Henkel AG & Co. KGaA Cold seal adhesives based on aqueous polyurethane dispersions
CN106634767A (en) * 2016-12-15 2017-05-10 陕西科技大学 Ammonia-free acrylic acid/alkyd resin art masking fluid, and preparation method and application thereof
CN110330618A (en) * 2019-07-30 2019-10-15 嘉兴学院 Aqueous polyurethane emulsion, preparation method and application

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