CN1670054A - Preparation of wire coated paint of polyester paint and polyester imine paint by using terephthalic acid - Google Patents
Preparation of wire coated paint of polyester paint and polyester imine paint by using terephthalic acid Download PDFInfo
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- CN1670054A CN1670054A CN 200410010141 CN200410010141A CN1670054A CN 1670054 A CN1670054 A CN 1670054A CN 200410010141 CN200410010141 CN 200410010141 CN 200410010141 A CN200410010141 A CN 200410010141A CN 1670054 A CN1670054 A CN 1670054A
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- polyester
- paint
- terephthalic acid
- wire enamel
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Abstract
The invention relates to a method for producing polyester, polyurethane glazed wire paint using terephthalic acid, which solves the problems of molecular weight disproportion, paint film continuity in the polyester fibre industrial process and clogging condensator easily, the environmental contamination by byproduct carbinol in the dimethyl terephthalate industrial process. The copper wires used in different standard as well as the polyester enamelled wire paint and polyurethane glazed wire paint allowable different needle speed are produced by controlling exit temperature of the dephlegmating column and other technological parameter strictly,
Description
Technical field
The present invention relates to a kind of a kind of basic raw material and correlation method that is used to produce polyester, polyesterimide wire enamel.
Background technology
Polyester, polyester-imide enameled wire be as motor, the base mateiral of various electrical equipment, coil etc., and to attached to the paint film on the fine copper wire, its electrical insulation capability and mechanical property require relatively stricter.At present, produce polyester, polyesterimide wire enamel both at home and abroad, its basic resin all is the cancellated vibrin of build, and this basic resin is terephthaldehyde's acid polyol ester, and its macromolecular structure formula is:
THEIC, or other polyvalent alcohols.Temperature classification be the lacquer of B level can not introduce imido grpup because of, but the above wire enamel of F level need introduce imines or imide group carries out modification to this matrix resin.
At present, the material of main part and the method for producing this terephthaldehyde's acid polyol ester both at home and abroad has two kinds:
A kind of is the terylene material (PET) that adopts terephthalic acid and ethylene glycol polycondensation to generate, and this resin carries out in ethylene glycol medium after the depolymerization and ethylene glycol again, and glycerine (or THEIC) carries out polycondensation generation vibrin." the insulating material communication " that introduction that this method is detailed such as Guilin electrical science are published and distributed, the 16th page of number of the edition ISSN1003-921X 1998 the 1st phase, " polyester resin is produced polyester, polyester-imide enamel-cover lacquer problem is inquired into " literary composition.The main drawback of this method is that terylene material (PET) depolymerization is incomplete, and the molecule segment size after the depolymerization is heterogeneity very, and height is big, and the polyester wire enamel levelling property of being produced is poor, and the paint film scratch resistance is bad, can not be used to produce small dimension enameled wire wire size.
Another kind is the product dimethyl terephthalate (DMT) (DMT) that adopts terephthalic acid and methyl alcohol reaction, and molecular formula is C
10H
10O
4, structural formula is
At high temperature put exchange with ethylene glycol, displace methyl alcohol, and then with part ethylene glycol, glycerine (or THEIC) carries out polycondensation, produce vibrin, this method sees " coating process " third edition that Chemical Industry Press publishes and distributes, ISBN7-5025-1894-0/TQ979 the 24 chapter electric insulation coating 612-615 page or leaf for details, the enamelled wire insulated paint part, it represents commodity is the Telebeck-30 and the Telebeck-35 polyester-polyesterimide wire enamel of German Beck company.The main drawback of this method is: in the production process, dimethyl terephthalate (DMT) distils easily, stops up condenser, and the by-product carbinol environmental pollution that is generated in addition is bigger.
Summary of the invention:
1, technical problem solved by the invention
The present invention adopts this basic material of terephthalic acid to produce polyester, polyesterimide wire enamel.Its molecular formula of terephthalic acid is C
8H
6O
4, structural formula is
White needles or do not have the solid shape solid is insoluble to boiling water and ordinary organic solvents, and its industrial goods have three kinds of specifications, 1. PTA-high-purity-grade; 2. MTA-fibre-grade moderate purity; 3. technical grade crude terephthalic acid, these three kinds of specifications all can be used to produce polyester, polyesterimide wire enamel.
One, terephthalic acid belongs to individual molecule participation reaction, does not have the problem that resembles polyester resin depolymerization inequality, and its product molecule amount is even, viscosity is little.Formed film integrity is good, and adding auxiliary agent (flow agent) and increasing curing dose can improve linear velocity on the enameled wire.
Two, terephthalic acid can not distil below 220 ℃ at technological temperature, has avoided resembling the phenomenon that condenser is stopped up in distillation that dimethyl terephthalate (DMT) produces in process of production.
Three, terephthalic acid by product in reaction is a water, has overcome a large amount of by-product carbinols that produce with dimethyl terephthalate (DMT), contaminate environment.
2, technical scheme of the present invention
Adopt Production of Terephthalic Acid polyester, its process flow diagram of polyesterimide wire enamel such as Figure of description, 1 is the stainless steel cauldron of circulating heat conduction oil heating among the figure, 2 is the filling type fractional column, fill draw ring or Pall ring in the fractional column, help distillating of moisture, fractional column has chuck outward, can lead to water coolant.3 is condenser, and 4 is receptor.Produce the vibrin entire reaction course and be divided into two stages, the fs is that terephthalic acid and glycerine (or THEIC), ethylene glycol carry out esterification.Temperature of reaction is controlled at about 210 ℃.In this process, pass through the flow of control fractional column water coolant, strict control fractional column upper outlet temperature is between 110-115 ℃, the moisture that produces in the assurance material reaction process can in time be discharged, subordinate phase is polycondensation, after esterification is finished, carry out the vacuum polycondensation, vacuum tightness was brought up to-0.9 normal atmosphere in 3 hours, temperature of reaction is raised to 220 ℃ by 200 ℃, guarantees that the moisture that produces in the polycondensation process in time is discharged in the receptor.
Produce polyesterimide wire enamel, after the above-mentioned fs finishes, cool to 140 ℃, add 4,4 in batches '---diaminodiphenyl oxide and trimellitic anhydride, progressively be warmed up to 180 ℃, after finishing, reaction carries out the subordinate phase vacuum polycondensation again.After polycondensation finishes, add cresols and dissolve, add dimethylbenzene and positive butyl (tetra) titanate and other auxiliary agents when temperature drops to below 100 ℃.Wherein adding flow agent can improve and be coated with linear velocity.
3, beneficial effect
The present invention produces polyester, polyesterimide wire enamel with terephthaldehyde's acid substitution terylen material and dimethyl terephthalate (DMT), its outstanding advantage is that (one) is because the reaction product molecular weight is even, viscosity is little, so can produce thin specification enameled wire and can improve upward linear velocity, film integrity is good.(2) technological process is controlled easily, and by product is a water, does not have environmental pollution problem.(3), directly low with terylene material and terephthalic acid dimethyl ester cost with Production of Terephthalic Acid polyester wire enamel ratio because terephthalic acid is the starting material that terylene material and dimethyl terephthalate (DMT) are produced.
Description of drawings
Its process flow sheet is seen Figure of description.1 is the stainless steel cauldron of circulating heat conduction oil heating among the figure, and 2 is the filling type fractional column, fills draw ring or Pall ring in the fractional column, helps distillating of moisture, and fractional column has chuck outward, can lead to water coolant.3 is condenser, and 4 is receptor.
Specific embodiment
Take by weighing 260 kilograms of terephthalic acids, 100 kilograms of ethylene glycol, 90 kilograms of glycerine, put in the oil heating stainless steel cauldron of 1000 liters, add each 0.02 kilogram of zinc acetate, catalyst Pt, be warmed up to 200-220 ℃, strict control fractional column temperature out is between 110-115 ℃.Smooth reaction 8-10 is individual hour under stirring state, treat that esterification finishes the back insulation at 220 ℃, vacuumize polycondensation, reaching needs to remove vacuum after the viscosity, adds 400 kilograms in cresols, and dissolving evenly, when cooling to below 100 ℃, add 280 kilograms of dilutions of dimethylbenzene, add 15 kilograms of positive butyl (tetra) titanates and 3-5 kilogram flow agent simultaneously, thorough mixing is even.
Producing polyesterimide wire enamel is after esterification finishes, and cools to 140 ℃, add 68 kilograms of trimellitic anhydride and 47 kilogram 4,4 '-diaminodiphenyl oxide, progressively be warmed up to 180 ℃, react after 1 hour, be warmed up to 220 ℃ again, carry out vacuum polycondensation.After the end, add the cresols dissolution with solvents again, when cooling to below 100 ℃, add dimethylbenzene and other auxiliary agent, mix.
Claims (4)
1, Production of Terephthalic Acid polyester, polyesterimide wire enamel is characterized in that producing polyester, polyesterimide wire enamel employing terephthalic acid conduct a kind of basic raw material wherein; Adopt the backflow of fractional column control material and the fractionation of moisture to discharge on the processing method.
2, according to claim 1, it is characterized in that: the terephthalic acid of employing can be high-purity-grade PTA, fibre-grade moderate purity MTA and technical grade crude terephthalic acid.
3, according to claim 1, it is characterized in that: can produce the polyester wire enamel and the polyesterimide wire enamel of all size with terephthalic acid, can improve and go up linear velocity.
4, according to claim 1, it is characterized in that: this fractional column that equipment increases that forms a complete production network, its filler can be porcelain or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410010141 CN1670054A (en) | 2004-03-19 | 2004-03-19 | Preparation of wire coated paint of polyester paint and polyester imine paint by using terephthalic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410010141 CN1670054A (en) | 2004-03-19 | 2004-03-19 | Preparation of wire coated paint of polyester paint and polyester imine paint by using terephthalic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1670054A true CN1670054A (en) | 2005-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410010141 Pending CN1670054A (en) | 2004-03-19 | 2004-03-19 | Preparation of wire coated paint of polyester paint and polyester imine paint by using terephthalic acid |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148559B (en) * | 2007-09-04 | 2010-12-08 | 丹阳利华电子有限公司 | Enameled wire paint for copper cladding aluminum and producing technique thereof |
| CN101295559B (en) * | 2007-04-24 | 2011-01-19 | 上海申茂电磁线厂 | Manufacturing process of fire-resistant thin dacron glass yarn sintered enameling copper strap wire |
| CN101613572B (en) * | 2009-07-22 | 2011-12-14 | 常州市智通树脂有限公司 | Polyester-imide wire coating enamel and preparation method thereof |
| CN102304321A (en) * | 2011-08-31 | 2012-01-04 | 蚌埠市英路光电有限公司 | Phenol type polyester wire enamel and preparation method thereof |
| CN102304322A (en) * | 2011-08-31 | 2012-01-04 | 蚌埠市英路光电有限公司 | Heat-resistance polyesterimide wire enamel and preparation method thereof |
| CN102304320A (en) * | 2011-08-31 | 2012-01-04 | 蚌埠市英路光电有限公司 | Low-temperature environment-friendly polyesterimide wire enamel and preparation method thereof |
| CN104130699A (en) * | 2014-07-18 | 2014-11-05 | 上海晟然绝缘材料有限公司 | High adhesion and solvent resistant insulating paint for polyester imide enameled wire and preparation method thereof |
| CN105985718A (en) * | 2015-02-05 | 2016-10-05 | 丹阳四达化工有限公司 | Polyester enameled wire enamel and preparation method thereof |
| CN105985717A (en) * | 2015-02-05 | 2016-10-05 | 丹阳四达化工有限公司 | Preparation method of polyester enameled wire enamel |
| CN105985714A (en) * | 2015-02-05 | 2016-10-05 | 丹阳四达化工有限公司 | Polyester wire enamel |
| CN113930140A (en) * | 2021-11-30 | 2022-01-14 | 迪马新材料科技（苏州）有限公司 | Polyester wire enamel and preparation method thereof |
| CN114539913A (en) * | 2022-01-07 | 2022-05-27 | 珠海格力电工有限公司 | Preparation method of polyester-imide insulating paint and polyester-imide insulating paint |
-
2004
- 2004-03-19 CN CN 200410010141 patent/CN1670054A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295559B (en) * | 2007-04-24 | 2011-01-19 | 上海申茂电磁线厂 | Manufacturing process of fire-resistant thin dacron glass yarn sintered enameling copper strap wire |
| CN101148559B (en) * | 2007-09-04 | 2010-12-08 | 丹阳利华电子有限公司 | Enameled wire paint for copper cladding aluminum and producing technique thereof |
| CN101613572B (en) * | 2009-07-22 | 2011-12-14 | 常州市智通树脂有限公司 | Polyester-imide wire coating enamel and preparation method thereof |
| CN102304322B (en) * | 2011-08-31 | 2013-07-31 | 蚌埠市英路光电有限公司 | Heat-resistance polyesterimide wire enamel and preparation method thereof |
| CN102304322A (en) * | 2011-08-31 | 2012-01-04 | 蚌埠市英路光电有限公司 | Heat-resistance polyesterimide wire enamel and preparation method thereof |
| CN102304320A (en) * | 2011-08-31 | 2012-01-04 | 蚌埠市英路光电有限公司 | Low-temperature environment-friendly polyesterimide wire enamel and preparation method thereof |
| CN102304321A (en) * | 2011-08-31 | 2012-01-04 | 蚌埠市英路光电有限公司 | Phenol type polyester wire enamel and preparation method thereof |
| CN104130699A (en) * | 2014-07-18 | 2014-11-05 | 上海晟然绝缘材料有限公司 | High adhesion and solvent resistant insulating paint for polyester imide enameled wire and preparation method thereof |
| CN104130699B (en) * | 2014-07-18 | 2016-08-24 | 上海晟然绝缘材料有限公司 | High adhesion force, solvent resistant insulating lacquer layer insullac and preparation method thereof |
| CN105985718A (en) * | 2015-02-05 | 2016-10-05 | 丹阳四达化工有限公司 | Polyester enameled wire enamel and preparation method thereof |
| CN105985717A (en) * | 2015-02-05 | 2016-10-05 | 丹阳四达化工有限公司 | Preparation method of polyester enameled wire enamel |
| CN105985714A (en) * | 2015-02-05 | 2016-10-05 | 丹阳四达化工有限公司 | Polyester wire enamel |
| CN113930140A (en) * | 2021-11-30 | 2022-01-14 | 迪马新材料科技（苏州）有限公司 | Polyester wire enamel and preparation method thereof |
| CN114539913A (en) * | 2022-01-07 | 2022-05-27 | 珠海格力电工有限公司 | Preparation method of polyester-imide insulating paint and polyester-imide insulating paint |
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