CN1115328A - Self-drying urushiol furol varnish - Google Patents
Self-drying urushiol furol varnish Download PDFInfo
- Publication number
- CN1115328A CN1115328A CN 94103194 CN94103194A CN1115328A CN 1115328 A CN1115328 A CN 1115328A CN 94103194 CN94103194 CN 94103194 CN 94103194 A CN94103194 A CN 94103194A CN 1115328 A CN1115328 A CN 1115328A
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- China
- Prior art keywords
- varnish
- laccol
- furol
- dimethylbenzene
- furfural
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
The self-drying urushiol furfural varnish featuring high-temp. and acid resistances, quick drying (7 min for surface and 5 hr for solidification) and long storage period (2 years) is prepared from mixing urushiol, furfural and ammonia water, polymerization twice, dewatering and diluting with solvent.
Description
The invention discloses a kind of self-drying urushiol furol varnish, it belongs to technical field of coatings.
The laccol furol varnish, as far back as the beginning of the sixties just the someone develop, begin to have preproduction the seventies.Original technology is: laccol 100 grams, furfural 33 grams (98%), ammoniacal liquor 7 grams (10%) are mixed stir, keep half an hour at 70～80 ℃, be warming up to 110 ℃ (about 1 hours), reaction mass becomes aterrimus from yellow, add water washing, branch vibration layer, vacuum hydro-extraction again.(Cai Fen, " raw lacquer chemistry ", P266～272, the Guizhou People's Press, 1987).The laccol furol varnish has heat-resisting, acid-resistant property, is reasonable Heat and corrosion resistant coating.Beginning also improves product as laccol phenolic varnish and develops.But in the former technology, furfural is excessive, and the residual monomer in reaction back can't eliminate, and makes the varnish that makes have three problems.One, remaining furfural (liquid, boiling point: 161.7 ℃, fusing point-38.7 ℃) influences the dryness of varnish, can not bring very burden to application from doing; The second, the furfural monomer in the varnish also can continue polymerization until gel in storage, and shortened storage period; Storage period is short, and is all unfavorable to production and use; The 3rd, the furfural loss is big, and excessive furfural is washed off in vain by water-white, and the varnish cost is increased.Just because of there are above three problems, former technology is not still promoted during the last ten years and is used after finding out.
The objective of the invention is: the contriver has carried out the trial-production Journal of Sex Research at the problem that former laccol furol varnish exists, purpose be to develop a kind of self-drying type, storage period is long and lower-cost novel laccol furol varnish.
In order to achieve the above object, taked following measure technically: the first, select reasonable ratio of components, make laccol and the furfural can both reasonable polymerization, and the cost of varnish also decrease.Ratio of components is: laccol 100 grams, furfural 〉=25 are to 29 grams (98%), and formaldehyde 〉=3 are to 6 grams (36%), and ammoniacal liquor 〉=5 are to 12 grams (27%), and dimethylbenzene 〉=200 are to 400 milliliters.The second, by twice condensation, make furfural, laccol be able to complete polymerization.The 3rd, first dimethylbenzene azeotropic dehydration, after steam a part of dimethylbenzene, water and formaldehyde are thoroughly eliminated.
Owing to taked these measures, the laccol furol varnish and the former laccol furol varnish that make with present technique compare (seeing the following form).From dryness, storage period and cost aspect have clear superiority.The solution of these problems makes self-drying urushiol furol varnish produce positively effect aspect industrial antisepsis.
Two kinds of laccol furol varnish performances relatively
| The name of an article | Dryness | Color | Thermotolerance | Mechanicalness | Rotproofness | Storage period | Cost | |
| Surface drying (branch) | Do solid work (hour) | |||||||
| The former laccol furol varnish of self-drying urushiol furol varnish | ????7 ????- | 5 thermosettings | Pitch black | Carefully | More crisp | Carefully | 2 years with the first half of the year | Low high |
Embodiment: in flask at the bottom of 500 milliliters of three mouthfuls of gardens, add 100 gram laccols, 125 milliliters of dimethylbenzene, 28 gram furfurals (98%) and 7 gram ammoniacal liquor (27%).Load onto thermometer, agitator and prolong.90-100 ℃ of following heated and stirred 2 hours, reactant became aterrimus by red sauce.Again from prolong 5 gram Shen aldehyde (36%) and the 5 gram ammoniacal liquor (27%) of adding respectively suitable for reading.Continuation was 90～100 ℃ of following heated and stirred 2 hours.Then at prolong and the indirect water-and-oil separator of flask.Add 50 milliliters of dimethylbenzene.Heating, stirring, dehydration.When collecting nearly 18 ml waters, steam 90 milliliters of dimethylbenzene again.At this moment, temperature rises to about 144 ℃ in the bottle.Stop heating, under agitation add 160 milliliters of dimethylbenzene dilutions again, promptly make self-drying urushiol furol varnish.
Claims (3)
1. laccol furol varnish from dryness, it is characterized in that: with laccol, furfural and ammoniacal liquor is raw material, after primary condensation reaction, condensation reaction is once again to add formaldehyde and ammoniacal liquor, the product of twice condensation gained, stay through being aided with the azeotropic steaming again, remove water and formaldehyde, obtain to have laccol furol varnish from dryness;
2. by the described polyreaction of claim 1, it is characterized in that: the material ratio of condensation reaction for the first time is a laccol: furfural: ammoniacal liquor=100: 〉=25 to 29: 〉=5 to 12; During condensation reaction for the second time, add formaldehyde 〉=3 to 6;
3. by profit requirement 1 described dehydration, it is characterized in that: through the product of the condensation second time, press laccol: dimethylbenzene=100: 〉=200 to 400 add dimethylbenzene, first dimethylbenzene azeotropic dehydration, continue after redistillation go out a part of dimethylbenzene, water and formaldehyde are removed fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94103194A CN1048034C (en) | 1994-03-25 | 1994-03-25 | Self-drying urushiol furol varnish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94103194A CN1048034C (en) | 1994-03-25 | 1994-03-25 | Self-drying urushiol furol varnish |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1115328A true CN1115328A (en) | 1996-01-24 |
| CN1048034C CN1048034C (en) | 2000-01-05 |
Family
ID=5030988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94103194A Expired - Fee Related CN1048034C (en) | 1994-03-25 | 1994-03-25 | Self-drying urushiol furol varnish |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1048034C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962431A (en) * | 2010-10-14 | 2011-02-02 | 中华全国供销合作总社西安生漆涂料研究所 | Urushiol phosphorous-series flame retardant resin and preparation method thereof |
| CN104387901A (en) * | 2014-11-18 | 2015-03-04 | 安徽创业机电设备有限公司 | Firm wear-resistant anticorrosive paint and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080649A (en) * | 1992-06-30 | 1994-01-12 | 李宜杰 | Preparation method of mixed lacquer |
-
1994
- 1994-03-25 CN CN94103194A patent/CN1048034C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962431A (en) * | 2010-10-14 | 2011-02-02 | 中华全国供销合作总社西安生漆涂料研究所 | Urushiol phosphorous-series flame retardant resin and preparation method thereof |
| CN101962431B (en) * | 2010-10-14 | 2013-04-03 | 中华全国供销合作总社西安生漆涂料研究所 | Urushiol phosphorous-series flame retardant resin and preparation method thereof |
| CN104387901A (en) * | 2014-11-18 | 2015-03-04 | 安徽创业机电设备有限公司 | Firm wear-resistant anticorrosive paint and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1048034C (en) | 2000-01-05 |
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| C14 | Grant of patent or utility model | ||
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