CN101392140B - Super fast curing silver mirror back top coating - Google Patents
Super fast curing silver mirror back top coating Download PDFInfo
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- CN101392140B CN101392140B CN2008101528067A CN200810152806A CN101392140B CN 101392140 B CN101392140 B CN 101392140B CN 2008101528067 A CN2008101528067 A CN 2008101528067A CN 200810152806 A CN200810152806 A CN 200810152806A CN 101392140 B CN101392140 B CN 101392140B
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Abstract
The invention relates to a primer base for the back of ultra fast curing glasses, the components of which by weight percentages are respectively: 35 percent to 50 percent of propyl modified resin mixed solution, 8 percent to 15 percent of crosslinking resin, 17 percent to 20 percent of pigment, 2 percent to 5 percent of promoter and 15 percent to 17 percent of solvents. The materials are mixed and stirred evenly, thus obtaining the finished product of the primer base for the back of the glasses. The primer base for the back of the glasses prepared by the invention takes the propyl modified resin as a basic film forming substance and adopts part of methyl-etherified formaldehyde resin as the crosslinking resin and the extender pigment, the pigment, the promoter and the various mixed solvents are added, so that the primer base after film forming has level and smooth surface, good adhesion, proper degree of hardness and brittleness, improved water and chemical resistance, excellent moisture and heat resistance and salt-mist resistance and especially obviously improved xylene wiping resistance and CASS resistance. During the process of application, curtain coating is stable, does not branch off and is totally dried during 6 minutes to 10 minutes of curing process at the temperature of 130 DEG C to 140 DEG C.
Description
Technical field
The invention belongs to paint field, especially a kind of super fast curing silver mirror back top coating.
Background technology
The production method of mirror has multiple, and what be most widely used is two kinds: first kind is to adopt vacuum aluminum-coated method, deposits layer of aluminum as the reflecting layer at glass surface; Second kind is to plate layer of metal silver as the reflecting layer by chemical process at glass surface, plates a bronze medal layer again with chemical process on silverskin then, to increase the reflecting effect and the provide protection of silverskin.Because the metal level of mirror is corroded by atmosphere easily, and the environment for use big and strong place of corrodibility in high temperature, the temperature difference mostly again, metal level is corroded and tarnishes and even come off, cause the forfeiture of optical property.For making mirror back of the body metal level not be subjected to chemical corrosion and physical damnification, also need apply the coating protection coating on the mirror back of the body metal level, and this supercoat must possess fabulous sticking power, good resistance to acids and bases and advantages such as hardness is good, scratch resistance; In addition, to have also that cutting part at mirror does not turn black, performance such as not mouldy behind the edging.Only in this way, the optical property of the work-ing life of mirror and mirror just can not descend.
The resin that finish paint and finish paint adopted of making at present the mirror back of the body as Synolac, be generally siccative oil and semi-drying oil modification, defective is easy gel, produces to be difficult to control, it is relatively poor to do rate, poor solvent resistance causes enamelled coating to bubble easily and even comes off.
China's annual silver mirror protective cover demand is 1.2 to 1.5 ten thousand tons, and market scale is 300,000,000 yuan.These coating markets of past are monopolized by Italian Fen Qi company, the general sharp company of the U.S. basically, some function of its mirror back paint, all belong to leading as CASS test, the test of anti-dimethylbenzene, but storing time is long, energy consumption is big, selling price is too high, causes certain pressure for thus the cost of mirror manufacturer.
By retrieval, find several pieces of patent documentations.CN1371409A disclosed " based on the fast-dry, high solid content coating of modified alkyd resin ", it is a kind of composition of acrylic acid modified alkyd resin ambient cure high solid, though have good performance, but because of coating structure densification inadequately, chemical substance is infiltrated easily, has influenced the weather resistance of mirror back reflection layer.CN1621430A disclosed " mirror back metal plating protective cover modified dry oil alkyd resin and curtain showering material thereof "; need can reach dry requirement at 180 ℃, 5 minutes; and the import silver mirror production line bake out temperature that China uses in a large number is 130-150 ℃, 3 minutes, so this coating still can not meet the demands.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, but a kind of super fast curing silver mirror back top coating with low temperature fast setting and high antiseptic property and pipelining is provided.
Technical scheme of the present invention is:
A kind of super fast curing silver mirror back top coating constitutes component and weight percent thereof and is respectively:
Third changes resin mixture liquor 35-50%
Cross-linked resin 8-15%
Pigment 17-20%
Auxiliary agent 2-5%
Solvent 15-17%;
The above-mentioned substance mixing and stirring is the mirror back top coating finished product;
Described third to change resin mixture liquor be third to change resin and 1: 1 by weight ratio formulated mixed solution of xylene solvent, and described third step that changes process for preparing resins is:
(1). preparation direactive glyceride: siccative oil and polyvalent alcohol are mixed in reactor, heat up gradually, add catalyzer, when being warmed up to 230 ± 2 ℃, stop to heat up, kept 40-45 minute, generate direactive glyceride;
(2). preparation short oil resin: in above-mentioned direactive glyceride, add polyprotonic acid, keep esterification,, in the time of 150 ± 2 ℃, kept at least 2 hours when acid number replenishes polyprotonic acid smaller or equal to 2mgKOH/g, the liquid resin that is diluted to xylene solvent then, this liquid resin is the short oil resin;
(3). the preparation finished product: add xylene solvent in above-mentioned short oil resin, begin at the uniform velocity dropwise addition of acrylic acid monomer when being warmed up to 120 ± 2 ℃, the dropping time is 1.5 hours ± 20 minutes; Keep at the uniform velocity dripping afterwards in 1 hour peroxide initiator, the dropping time is 30 ± 10 minutes, kept 2 hours ± 10 minutes, and heated up then and, be the acrylic graft-modified high hydroxyl value dry oil short oil alkyd resin finished product when transformation efficiency reaches 98% up to reflux dewatering.
And, also can add pigment extender, its weight percent is 14-18%.
And described cross-linked resin comprises part methyl-etherified terpolycyantoamino-formaldehyde resin.
And described auxiliary agent is wherein a kind of, perhaps two or more mixture of flow agent, defoamer, anti-settling agent.
And described solvent is wherein a kind of, perhaps two or more mixture of heavy aromatics, dimethylbenzene, butanols, DBE and ethers.
And described pigment extender is wherein a kind of, perhaps two or more mixture of talcum powder, barium sulfate and water-ground limestone.
Advantage of the present invention and beneficial effect are:
1. the prepared mirror back top coating of the present invention adopts that to change resin with third be basic filmogen, part methyl-etherified terpolycyantoamino-formaldehyde resin adds pigment, filler, auxiliary agent and various mixed solvent as linking agent, makes coating film forming rear surface smooth smooth, sticking power is good, the hard fragility of appropriateness, water-fast, chemical resistance all increases, moisture-proof heat, moisture resistance, salt spray resistance is fabulous, and particularly anti-dimethylbenzene wiping, anti-CASS have had especially and have significantly improved.In use, curtain drenches stable not jag, complete drying in 130-140 ℃, 6-10 minute bake process.
2 the present invention prepared mirror back top coating adopted third changes resin and can form the big netted three-dimensional arrangement of a kind of degree of crosslinking with the cross-linked resin reaction, make coating structure very fine and close, chemical substance is difficult for infiltrating, and has good physicochemical performance, can effectively improve the weather resistance of mirror back reflection layer.
3. the prepared mirror back top coating of the present invention has low temperature fast setting and high antiseptic property and can realize pipelining; help to improve the state of the art that China's mirror-back protective coating is made; break the product monopolization of external major company, reduce manufacturing production cost of China's silver mirror and operation cost.
Embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
Embodiment 1:
A kind of super fast curing silver mirror back top coating, it constitutes component and weight (kg) is:
Third changes 50% dimethylbenzene liquid 40 of resin
Cross-linked resin (part methyl-etherified terpolycyantoamino-formaldehyde resin) 10
Pigment 18
Pigment extender (mixing of talcum powder, barium sulfate, water-ground limestone) 14
Auxiliary agent (mixing of flow agent, defoamer, anti-settling agent) 3
Solvent (the mixing 15 of heavy aromatics, dimethylbenzene, butanols, DBE, ethers.
Third changes the abbreviation that resin is an acrylic graft-modified high hydroxyl value dry oil short oil alkyd resin, and the step of its preparation method is:
(1). preparation direactive glyceride: siccative oil and polyvalent alcohol are mixed in reactor, heat up gradually, add catalyzer, when being warmed up to 230 ± 2 ℃, stop to heat up, kept 40-45 minute, generate direactive glyceride;
(2). preparation short oil resin: in above-mentioned direactive glyceride, add polyprotonic acid, keep esterification, in the time of 150 ± 2 ℃, kept at least 2 hours, the liquid resin that is diluted to xylene solvent then, this liquid resin is the short oil resin; When preparation short oil resin, when the reactant acidity in the esterification during, need add polyprotonic acid smaller or equal to 2mgKOH/g, the weight ratio of the amount of the polyprotonic acid of adding and the polyprotonic acid that is added in direactive glyceride is 4: 96.
(3). preparation finished product: in above-mentioned short oil resin, add xylene solvent, begin dropwise addition of acrylic acid monomer at the uniform velocity (add xylene solvent identical with the addition of the Acrylic Acid Monomer that at the uniform velocity drips) when being warmed up to 120 ± 2 ℃, the dropping time is 1.5 hours ± 20 minutes; Keep at the uniform velocity dripping afterwards in 1 hour peroxide initiator, the dropping time is 30 ± 10 minutes, kept 2 hours ± 10 minutes, and heated up then and, be acrylic graft-modified high hydroxyl value dryness short-oil alkyd finished product when transformation efficiency reaches 98% up to reflux dewatering.
Because pigment extender has certain anticorrosion, not painted and effect of reducing cost, has therefore added pigment extender in the present embodiment.
The preparation method of super fast curing silver mirror back top is:
(1). change resin mixture liquor and pigment mixes by weight ratio with third, grind then, fineness forms and grinds mill base less than 25 microns;
(2). will grind mill base and mix, add auxiliary agent, solvent then by weight ratio respectively, can become the silver mirror back top coating finished product after mixing with cross-linked resin part methyl-etherified terpolycyantoamino-formaldehyde resin.
Embodiment 2:
A kind of super fast curing silver mirror back top coating, it constitutes component and weight (kg) is:
Third changes 50% dimethylbenzene liquid 38 of resin
Cross-linked resin (part methyl-etherified terpolycyantoamino-formaldehyde resin) 12
Pigment (universal pigment) 18
Pigment extender (talcum powder mixes with barium sulfate) 15
Auxiliary agent (mixing of flow agent, defoamer) 2
Solvent (heavy aromatics, DBE mix with ethers) 15.
Other are same as embodiment 1.
Preparation method's step is same as embodiment 1.
Embodiment 3:
A kind of super fast curing silver mirror back top coating, it constitutes component and weight (kg) is:
Third changes resin (50% dimethylbenzene liquid) 50
Cross-linked resin (part methyl-etherified terpolycyantoamino-formaldehyde resin) 13
Pigment (universal pigment) 17
Auxiliary agent (mixing of flow agent, defoamer, anti-settling agent) 3
Solvent (heavy aromatics, dimethylbenzene, butanols, DBE, ethers) 17.
Other are same as embodiment 1.
Preparation method's step is same as embodiment 1.
Claims (6)
1. super fast curing silver mirror back top coating is characterized in that: constitute component and weight percent thereof and be respectively:
Third changes resin mixture liquor 35-50%
Cross-linked resin 8-15%
Pigment 17-20%
Auxiliary agent 2-5%
Solvent 15-17%;
The above-mentioned substance mixing and stirring is the mirror back top coating finished product;
Described third to change resin mixture liquor be third to change resin and 1: 1 by weight ratio formulated mixed solution of xylene solvent, and described third step that changes process for preparing resins is:
(1). preparation direactive glyceride: siccative oil and polyvalent alcohol are mixed in reactor, heat up gradually, add catalyzer, when being warmed up to 230 ± 2 ℃, stop to heat up, kept 40-45 minute, generate direactive glyceride;
(2). preparation short oil resin: in above-mentioned direactive glyceride, add polyprotonic acid, keep esterification,, in the time of 150 ± 2 ℃, kept at least 2 hours when acid number replenishes polyprotonic acid smaller or equal to 2mgKOH/g, the liquid resin that is diluted to xylene solvent then, this liquid resin is the short oil resin;
(3). the preparation finished product: add xylene solvent in above-mentioned short oil resin, begin at the uniform velocity dropwise addition of acrylic acid monomer when being warmed up to 120 ± 2 ℃, the dropping time is 1.5 hours ± 20 minutes; Keep at the uniform velocity dripping afterwards in 1 hour peroxide initiator, the dropping time is 30 ± 10 minutes, kept 2 hours ± 10 minutes, and heated up then and, be the acrylic graft-modified high hydroxyl value dry oil short oil alkyd resin finished product when transformation efficiency reaches 98% up to reflux dewatering.
2. a kind of super fast curing silver mirror back top coating according to claim 1 is characterized in that: also can add pigment extender, its weight percent is 14-18%.
3. a kind of super fast curing silver mirror back top coating according to claim 1 is characterized in that: described cross-linked resin comprises part methyl-etherified terpolycyantoamino-formaldehyde resin.
4. a kind of super fast curing silver mirror back top coating according to claim 1 is characterized in that: described auxiliary agent is wherein a kind of, perhaps two or more mixture of flow agent, defoamer, anti-settling agent.
5. a kind of super fast curing silver mirror back top coating according to claim 1 is characterized in that: described solvent is wherein a kind of, perhaps two or more mixture of heavy aromatics, dimethylbenzene, butanols, DBE and ethers.
6. a kind of super fast curing silver mirror back top coating according to claim 2 is characterized in that: described pigment extender is wherein a kind of, perhaps two or more mixture of talcum powder, barium sulfate and water-ground limestone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101528067A CN101392140B (en) | 2008-11-05 | 2008-11-05 | Super fast curing silver mirror back top coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101528067A CN101392140B (en) | 2008-11-05 | 2008-11-05 | Super fast curing silver mirror back top coating |
Publications (2)
| Publication Number | Publication Date |
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| CN101392140A CN101392140A (en) | 2009-03-25 |
| CN101392140B true CN101392140B (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101528067A Active CN101392140B (en) | 2008-11-05 | 2008-11-05 | Super fast curing silver mirror back top coating |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002305B (en) * | 2009-08-31 | 2013-01-23 | 无锡市金箭造漆有限公司 | Water-based precoated coiled material coating back paint and preparation method thereof |
| CN102492356A (en) * | 2011-12-05 | 2012-06-13 | 江苏柏鹤涂料有限公司 | Mirror back protective coating for colored coated mirror |
| CN107903860B (en) * | 2017-09-12 | 2020-10-09 | 苏州固泰新材股份有限公司 | Binder for solar cell back protective film and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258272A (en) * | 1997-05-27 | 2000-06-28 | 利利工业(美国)有限公司 | Iminodiacetonitrile mirror back coating corrosion inhibitor |
| CN1621430A (en) * | 2004-10-18 | 2005-06-01 | 常州市柏鹤涂料有限公司 | Modified dry oil alkyd resin for protective paint for metal coating on the back of the mirror and the curtain coating paint |
| JP2006028462A (en) * | 2004-07-22 | 2006-02-02 | Central Glass Co Ltd | Composition for reverse side-lining film composition and corrosion-prevented mirror |
-
2008
- 2008-11-05 CN CN2008101528067A patent/CN101392140B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258272A (en) * | 1997-05-27 | 2000-06-28 | 利利工业(美国)有限公司 | Iminodiacetonitrile mirror back coating corrosion inhibitor |
| JP2006028462A (en) * | 2004-07-22 | 2006-02-02 | Central Glass Co Ltd | Composition for reverse side-lining film composition and corrosion-prevented mirror |
| CN1621430A (en) * | 2004-10-18 | 2005-06-01 | 常州市柏鹤涂料有限公司 | Modified dry oil alkyd resin for protective paint for metal coating on the back of the mirror and the curtain coating paint |
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| Publication number | Publication date |
|---|---|
| CN101392140A (en) | 2009-03-25 |
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Denomination of invention: Super fast curing silver mirror back top coating Effective date of registration: 20140102 Granted publication date: 20110803 Pledgee: Tianjin Hui Qing investment Company limited by guarantee Pledgor: Tianjin City Xinlihua Color Material Co., Ltd. Registration number: 2013120000059 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Super fast curing silver mirror back top coating Effective date of registration: 20140102 Granted publication date: 20110803 Pledgee: Tianjin Hui Qing investment Company limited by guarantee Pledgor: Tianjin City Xinlihua Color Material Co., Ltd. Registration number: 2013120000059 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model |