CN103965428A - Polyurethane polyalcohol for producing low-temperature soldering tin F-grade polyurethane wire enamel and preparation technique thereof - Google Patents
Polyurethane polyalcohol for producing low-temperature soldering tin F-grade polyurethane wire enamel and preparation technique thereof Download PDFInfo
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- CN103965428A CN103965428A CN201410219643.5A CN201410219643A CN103965428A CN 103965428 A CN103965428 A CN 103965428A CN 201410219643 A CN201410219643 A CN 201410219643A CN 103965428 A CN103965428 A CN 103965428A
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- Prior art keywords
- polyurethane
- hours
- scolding tin
- mixed solution
- polyurethane polyol
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- 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
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
- C08G18/4241—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols from dicarboxylic acids and dialcohols in combination with polycarboxylic acids and/or polyhydroxy compounds which are at least trifunctional
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/20—Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
-
- 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
Abstract
The invention discloses a polyurethane polyalcohol for producing low-temperature soldering tin F-grade polyurethane wire enamel and a preparation method thereof. The preparation method comprises the following steps: S1. adding 880g of glycerol, 1280g of trimethylolpropane, 380g of adipic acid, 2180g of phthalic anhydride and 540g of ethylene glycol, and heating to 150-180 DEG C to react for 2 hours; S2. continuing heating the mixed solution in the step S1 to 180-200 DEG C to react for 5 hours, continuing heating to 200-205 DEG C to react for 4 hours, and vacuumizing until the acid value is 7-10mg KOH/g; S3. adding 50-100g of meta-paracresol into the mixed solution obtained in the step S2, and cooling to 140 DEG C; and S4. adding 60-110g of MDI (methylenediphenyl diisocyanate) into the mixed solution obtained in the step S3, reacting for 3 hours while controlling the temperature at 150-155 DEG C, adding a diluter, and stirring for 1 hour to obtain the polyurethane polyalcohol. The method has the advantages of low soldering tin temperature and less welding slag, and is used for producing low-temperature soldering tin.
Description
Technical field
The present invention relates to the preparation technology of wire enamel, refer in particular to a kind of polyurethane polyol and preparation technology thereof for the production of low temperature scolding tin F level polyurethane enamelled wire paint.
Background technology
Wire enamel is the insulation layer being coated on metallic conductor, and F level polyurethane enamelled wire paint has straight weldering, is the enameled wire that coated with it while carrying out scolding tin, need not remove paint film, can be placed in the molten tin bath of high temperature directly scolding tin.Its this specific character, gives electronics, and electrical apparatus industry automatization has brought convenience, has improved production efficiency.But original F level polyurethane enamelled wire paint scolding tin temperature is at 360 ℃-370 ℃, and temperature drift, has strengthened energy consumption, and weld welding slag is many, is not easy to automated job.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, provides a kind of scolding tin temperature low, few polyurethane polyol and the preparation technology thereof for the production of low temperature scolding tin F level polyurethane enamelled wire paint of welding welding slag.
The technical scheme that the present invention takes is as follows:
A kind of polyurethane polyol for the production of low temperature scolding tin F level polyurethane enamelled wire paint, comprise following mass component: glycerine 8.5-10.2%, TriMethylolPropane(TMP) 10.4%-13.3%, adipic acid 3.2-4.1%, phthalic anhydride 19.6-23.1%, ethylene glycol 4.8-5.7%, M-and P-cresols 0.5-1%, MDI 0.6-1.1%, surplus is thinner.
Preferably, the best in quality component of described polyurethane polyol is: glycerine 8.8%, and TriMethylolPropane(TMP) 12.8%, adipic acid 3.8%, phthalic anhydride 21.8%, ethylene glycol 5.4%, M-and P-cresols 0.6%, MDI 0.8%, and surplus is thinner.
A preparation technology for the production of the polyurethane polyol of low temperature scolding tin F level polyurethane enamelled wire paint, comprises the following steps:
S1. drop into glycerine 880g, TriMethylolPropane(TMP) 1280g, adipic acid 380g, phthalic anhydride 2180g, ethylene glycol 540g, is warming up to 150 ℃-180 ℃ reactions 2 hours;
S2. the mixed solution in step S1 is continued to be warming up to 180 ℃-200 ℃ reactions 5 hours, then, continue to be warming up to 200 ℃-205 ℃ reactions 4 hours, be evacuated to acid number 7-10mgKOH/g;
S3. in the mixed solution obtaining at step S2, add 50-100g M-and P-cresols, and be cooled to 140 ℃;
S4. drop into 60-110gMDI to the mixed solution of step S3, and control temperature at 150 ℃-155 ℃, react 3 hours, add thinner, stir and within one hour, obtain polyurethane polyol.
Preferably, the M-and P-cresols optimum weight adding in described step S2 is 60g, and the MDI optimum weight adding in step S4 is 80g.
Beneficial effect of the present invention is:
The present invention relates to a kind of low temperature scolding tin F level polyurethane enamelled wire paint, by adopting component formula and the production technique of independent research design to prepare a kind of new polyurethane polyol, then this polyurethane polyol is adopted to MDI sealing resin, and by the polyol resin of amido-containing acid ester, organic solvent, catalyzer, flow agent and other auxiliary agents are in harmonious proportion, to obtain enameled wire.The wire enamel of gained coats after enameled wire, greatly reduces scolding tin temperature, and scolding tin temperature is reduced to 340 ℃; Meanwhile, shortened the scolding tin time, welding slag is few, makes electrical machinery plant in the use procedure of enameled wire, has reduced energy consumption, has improved production efficiency.
embodiment
Embodiment 1
A polyurethane polyol for the production of low temperature scolding tin F level polyurethane enamelled wire paint, comprises following mass component: glycerine 8.5%, TriMethylolPropane(TMP) 10.4%%, adipic acid 3.2%, phthalic anhydride 19.6%, ethylene glycol 4.8%, M-and P-cresols 0.5%, MDI 0.6%, and surplus is thinner.
A preparation technology for the production of the polyurethane polyol of low temperature scolding tin F level polyurethane enamelled wire paint, comprises the following steps:
S1. drop into glycerine 850g, TriMethylolPropane(TMP) 1040g, adipic acid 320g, phthalic anhydride 1960g, ethylene glycol 480g, is warming up to 150 ℃-180 ℃ reactions 2 hours;
S2. the mixed solution in step S1 is continued to be warming up to 180 ℃-200 ℃ reactions 5 hours, then, continue to be warming up to 200 ℃-205 ℃ reactions 4 hours, be evacuated to acid number 7-10mgKOH/g;
S3. in the mixed solution obtaining at step S2, add 50g M-and P-cresols, and be cooled to 140 ℃;
S4. drop into 60gMDI to the mixed solution of step S3, and control temperature at 150 ℃-155 ℃, react 3 hours, add thinner, stir and within one hour, obtain polyurethane polyol.
Further, the polyurethane polyol and the MDI sealing resin that adopt said components and preparation technology to obtain, organic solvent, catalyzer, after flow agent and other auxiliary agents are in harmonious proportion, with the enameled wire of its coating, in the molten tin bath of high temperature, carry out direct scolding tin, scolding tin temperature is 350 ℃.
Embodiment 2
A polyurethane polyol for the production of low temperature scolding tin F level polyurethane enamelled wire paint, comprises following mass component: glycerine 8.8%, TriMethylolPropane(TMP) 12.8%%, adipic acid 3.8%, phthalic anhydride 21.8%, ethylene glycol 5.4%, M-and P-cresols 0.6%, MDI 0.8%, and surplus is thinner.
A preparation technology for the production of the polyurethane polyol of low temperature scolding tin F level polyurethane enamelled wire paint, comprises the following steps:
S1. drop into glycerine 880g, TriMethylolPropane(TMP) 1280g, adipic acid 380g, phthalic anhydride 2180g, ethylene glycol 540g, is warming up to 150 ℃-180 ℃ reactions 2 hours;
S2. the mixed solution in step S1 is continued to be warming up to 180 ℃-200 ℃ reactions 5 hours, then, continue to be warming up to 200 ℃-205 ℃ reactions 4 hours, be evacuated to acid number 7-10mgKOH/g;
S3. in the mixed solution obtaining at step S2, add 60g M-and P-cresols, and be cooled to 140 ℃;
S4. drop into 80gMDI to the mixed solution of step S3, and control temperature at 150 ℃-155 ℃, react 3 hours, add thinner, stir and within one hour, obtain polyurethane polyol.
Further, the polyurethane polyol and the MDI sealing resin that adopt said components and preparation technology to obtain, organic solvent, catalyzer, after flow agent and other auxiliary agents are in harmonious proportion, with the enameled wire of its coating, in the molten tin bath of high temperature, carry out direct scolding tin, scolding tin temperature is 330 ℃.
Embodiment 3
A polyurethane polyol for the production of low temperature scolding tin F level polyurethane enamelled wire paint, comprises following mass component: glycerine 10.2%, TriMethylolPropane(TMP) 13.3%, adipic acid 4.1%, phthalic anhydride 23.1%, ethylene glycol 5.7%, M-and P-cresols 1%, MDI 1.1%, and surplus is thinner.
A preparation technology for the production of the polyurethane polyol of low temperature scolding tin F level polyurethane enamelled wire paint, comprises the following steps:
S1. drop into glycerine 1020g, TriMethylolPropane(TMP) 1330g, adipic acid 410g, phthalic anhydride 2310g, ethylene glycol 570g, is warming up to 150 ℃-180 ℃ reactions 2 hours;
S2. the mixed solution in step S1 is continued to be warming up to 180 ℃-200 ℃ reactions 5 hours, then, continue to be warming up to 200 ℃-205 ℃ reactions 4 hours, be evacuated to acid number 7-10mgKOH/g;
S3. in the mixed solution obtaining at step S2, add 100g M-and P-cresols, and be cooled to 140 ℃;
S4. drop into 110gMDI to the mixed solution of step S3, and control temperature at 150 ℃-155 ℃, react 3 hours, add thinner, stir and within one hour, obtain polyurethane polyol.
Further, the polyurethane polyol and the MDI sealing resin that adopt said components and preparation technology to obtain, organic solvent, catalyzer, after flow agent and other auxiliary agents are in harmonious proportion, with the enameled wire of its coating, in the molten tin bath of high temperature, carry out direct scolding tin, scolding tin temperature is 340 ℃.
Comprehensive above-described embodiment 1,2,3 is known, the polyurethane polyol that component formula in employing embodiment 1,2,3 and preparation technology obtain, and the wire enamel being prepared from by this polyurethane polyol its in high temperature molten tin bath directly during scolding tin required temperature be controlled at 330-350 ℃, than conventional temperature, reduce 20-40 ℃, and adopt component formula in embodiment 2 and preparation technology can by high temperature molten tin bath directly during scolding tin required temperature be controlled at 330 ℃, cooling-down effect is the most obvious.Therefore adopt the present invention can greatly reduce energy consumption, reduce welding slag.
Embodiments of the invention are just introduced its embodiment, do not lie in and limit its protection domain.The technician of the industry can make some and revise under the inspiration of the present embodiment, and the equivalence of doing according to the scope of the claims of the present invention therefore all changes or modifies, and all belongs within the scope of Patent right requirement of the present invention.
Claims (4)
1. the polyurethane polyol for the production of low temperature scolding tin F level polyurethane enamelled wire paint, it is characterized in that comprising following mass component: glycerine 8.5-10.2%, TriMethylolPropane(TMP) 10.4%-13.3%, adipic acid 3.2-4.1%, phthalic anhydride 19.6-23.1%, ethylene glycol 4.8-5.7%, M-and P-cresols 0.5-1%, MDI 0.6-1.1%, surplus is thinner.
2. a kind of polyurethane polyol for the production of low temperature scolding tin F level polyurethane enamelled wire paint according to claim 1, it is characterized in that: the best in quality component of described polyurethane polyol is: glycerine 8.8%, TriMethylolPropane(TMP) 12.8%, adipic acid 3.8%, phthalic anhydride 21.8%, ethylene glycol 5.4%, M-and P-cresols 0.6%, MDI 0.8%, and surplus is thinner.
3. for the production of a preparation technology for the polyurethane polyol of low temperature scolding tin F level polyurethane enamelled wire paint, it is characterized in that comprising the following steps:
S1. drop into glycerine 880g, TriMethylolPropane(TMP) 1280g, adipic acid 380g, phthalic anhydride 2180g, ethylene glycol 540g, is warming up to 150 ℃-180 ℃ reactions 2 hours;
S2. the mixed solution in step S1 is continued to be warming up to 180 ℃-200 ℃ reactions 5 hours, then, continue to be warming up to 200 ℃-205 ℃ reactions 4 hours, be evacuated to acid number 7-10mgKOH/g;
S3. in the mixed solution obtaining at step S2, add 50-100g M-and P-cresols, and be cooled to 140 ℃;
S4. drop into 60-110gMDI to the mixed solution of step S3, and control temperature at 150 ℃-155 ℃, react 3 hours, add thinner, stir and within one hour, obtain polyurethane polyol.
4. the preparation technology of a kind of polyurethane polyol for the production of low temperature scolding tin F level polyurethane enamelled wire paint according to claim 3, it is characterized in that: the M-and P-cresols optimum weight adding in described step S2 is 60g, the MDI optimum weight adding in step S4 is 80g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410219643.5A CN103965428A (en) | 2014-05-23 | 2014-05-23 | Polyurethane polyalcohol for producing low-temperature soldering tin F-grade polyurethane wire enamel and preparation technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410219643.5A CN103965428A (en) | 2014-05-23 | 2014-05-23 | Polyurethane polyalcohol for producing low-temperature soldering tin F-grade polyurethane wire enamel and preparation technique thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103965428A true CN103965428A (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410219643.5A Pending CN103965428A (en) | 2014-05-23 | 2014-05-23 | Polyurethane polyalcohol for producing low-temperature soldering tin F-grade polyurethane wire enamel and preparation technique thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109096875A (en) * | 2018-07-27 | 2018-12-28 | 江苏恒兴制漆有限公司 | A kind of modified polyurethane wire enamel and preparation method thereof suitable for cryogenic direct-welding |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597815A (en) * | 2004-08-03 | 2005-03-23 | 中国化工建设总公司常州涂料化工研究院 | Paint for H grade polyurethane enamelled wire with good saline water needle performace capable of directing welding at low temp. |
| CN1635039A (en) * | 2003-12-25 | 2005-07-06 | 左晓兵 | Method for preparing novel B level high speed polyurethane enamelled wire paint |
| CN101029203A (en) * | 2007-02-08 | 2007-09-05 | 常熟理工学院 | Production of cryogenic direct-welding polyurethane envelope without pinhole |
| CN102268217A (en) * | 2011-06-09 | 2011-12-07 | 常州虹波涂料有限公司 | Method for preparing polyurethane enamelled wire paint allowing for direct welding without weld slag |
| US20120045571A1 (en) * | 2009-02-20 | 2012-02-23 | Elantas Gmbh | Eco-friendly solderable wire enamel |
-
2014
- 2014-05-23 CN CN201410219643.5A patent/CN103965428A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1635039A (en) * | 2003-12-25 | 2005-07-06 | 左晓兵 | Method for preparing novel B level high speed polyurethane enamelled wire paint |
| CN1597815A (en) * | 2004-08-03 | 2005-03-23 | 中国化工建设总公司常州涂料化工研究院 | Paint for H grade polyurethane enamelled wire with good saline water needle performace capable of directing welding at low temp. |
| CN101029203A (en) * | 2007-02-08 | 2007-09-05 | 常熟理工学院 | Production of cryogenic direct-welding polyurethane envelope without pinhole |
| US20120045571A1 (en) * | 2009-02-20 | 2012-02-23 | Elantas Gmbh | Eco-friendly solderable wire enamel |
| CN102268217A (en) * | 2011-06-09 | 2011-12-07 | 常州虹波涂料有限公司 | Method for preparing polyurethane enamelled wire paint allowing for direct welding without weld slag |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109096875A (en) * | 2018-07-27 | 2018-12-28 | 江苏恒兴制漆有限公司 | A kind of modified polyurethane wire enamel and preparation method thereof suitable for cryogenic direct-welding |
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Application publication date: 20140806 |
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