CN104987492A - Crude TDI anti-condensation additive and using method therefor - Google Patents
Crude TDI anti-condensation additive and using method therefor Download PDFInfo
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- CN104987492A CN104987492A CN201510436358.3A CN201510436358A CN104987492A CN 104987492 A CN104987492 A CN 104987492A CN 201510436358 A CN201510436358 A CN 201510436358A CN 104987492 A CN104987492 A CN 104987492A
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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
- C08G18/70—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
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
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Abstract
The invention relates to the technical field of TDI preparation, and particularly discloses a crude TDI anti-condensation additive. The crude TDI anti-condensation additive comprises the following components in mass ratio: 1-7 parts of 2,6-butylated hydroxytoluene and 1-7 parts of simethicone; and the crude TDI anti-condensation additive is obtained by uniformly mixing the components. Further, the mass ratio of TDI and tar contained in crude TDI is (45-55): (45-55). The invention also discloses a using method of the crude TDI anti-condensation additive. The temperature of the crude TDI is controlled to be 80-120 DEG C, and the anti-condensation additive is added in a stirring condition. The mass ratio of the crude TDI to the anti-condensation additive is (1-8): 1, and truck loading or barreling is performed on the crude TDI added with the anti-condensation additive through an automatic filling system. The crude TDI anti-condensation additive can solve the problem that the crude TDI is easy for solidification to cause inconvenient transportation and use, a good liquid state is formed after the crude TDI is naturally cooled during filling, and the condensation phenomenon does not appear.
Description
Technical field
The present invention relates to TDI preparing technical field.
Background technology
TDI, Chinese tolylene diisocyanate, comprises multiple isomer, wherein 2,4-TDI and 2,6-TDI be the conventional important foundation raw material preparing urethane (PU) material of industry.In the manufacture of current TDI, the side reaction of photochemical process can produce a large amount of tar, and the TDI that tar can generate with main reaction forms mixture, through tar concentration systems evaporation cutting out partial TDI product, become thick TDI after residuum concentrates, it mainly comprises TDI and tar.At present, condensation after the TDI evaporation wherein contained mainly is reclaimed by the treatment process for thick TDI, and tar is using the form of powder as industrial waste process.This cover process energy consumption is high, the processing costs of tar foam is high, and TDI reclaims not exclusively, and the process of tar foam affects larger by extraneous environmental protection form.
For the photochemical workshop of Cangzhou great Hua Juhai branch office, the process of its thick TDI adopts a complete set of retrieving arrangement LIST of Switzerland's import, carry out recovery TDI and separating tar foam, but this equipment energy consumption is high, and continuous and steady operation is poor, equipment and spare part external procurement cycle is long, particularly bearing filler quick abrasion, need irregular parking maintenance, affect production efficiency, maintenance cost is high.Reclaim remaining tar foam after TDI to be transported to third company and to carry out Hazardous wastes process, transport has a big risk, and processing costs is high.
Current Some Enterprises has developed the new processing method for thick TDI, and TDI and tar can be met a certain proportion of thick TDI and carry out deep processing as raw material by it, prepare broad-spectrum product.This technology had both solved the large problem of intractability of the useless tar foam of danger, in turn saved handling of a large amount of fund of TDI manufacturing enterprise and loaded down with trivial details environmental protection formality, more reduce the energy consumption that TDI manufacturing enterprise processes thick TDI, remarkable in economical benefits.
But, fusing point due to TDI is lower is that 13.2 DEG C and tar easily assemble the characteristic of solidifying, the thick TDI temperature obtained through tar concentration systems in photochemical process is more than 150 degree, through lower the temperature filling after naturally cooling, thick TDI meeting quick solidification, especially, under occurring in winter low temperature condition, pail pack can not be adopted to close the mode storing and transport, and impact uses.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of thick anti-condensation additive of TDI and using method thereof, can solve thick TDI low temperature and easily solidify and cause transport and awkward problem.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of thick anti-condensation additive of TDI, comprises following component in mass ratio:
2.6-ditertbutylparacresol 1 ~ 7 part,
Dimethyl silicone oil 1 ~ 7 part;
Said components is mixed and obtains the anti-condensation additive of thick TDI.
Thick TDI refers in the manufacture of TDI, after photochemical process coal-tar middle oil concentration systems evaporation cutting out partial TDI product, formed after residuum concentrates based on the mixture of tar and TDI.
Further, in thick TDI, the mass ratio of contained TDI and tar is 45 ~ 55:45 ~ 55.
The using method of the anti-condensation additive of above-mentioned thick TDI, by thick TDI temperature control 80 ~ 120 DEG C, adds anti-condensation additive under whipped state.
Further, the mass ratio of thick TDI and anti-condensation additive is 1 ~ 8:1.
Further, the thick TDI of anti-condensation additive is added by automatic filling system entrucking or barrelling.
The beneficial effect adopting technique scheme to produce is: the anti-condensation binder component of the present invention is easily purchased, and preparation is simple, and during use, temperature control adds, easy to use.Its viscosity, surface tension can be changed after the present invention adds thick TDI, have good dispersiveness to tar macromole simultaneously, not make it to assemble.Application the present invention can make thick TDI after filling naturally cooling, form good liquid state, there will not be solidification phenomenon, pail pack can be used to carry out filling rear enclosed storage, identical mode of transport can be used with common barreled TDI, significantly reduce the storage of thick TDI and transport difficulty and security risk, the thick TDI of the good fluidity of formation is easy to use.
Embodiment
The invention provides a kind of thick anti-condensation additive of TDI and using method thereof, thick TDI low temperature can be solved and easily solidify and cause transport and awkward problem.Anti-condensation additive comprises 2.6-ditertbutylparacresol and dimethyl silicone oil, suitable adding proportion is determined by optimizing, must carry out by temperature control during interpolation, after thick TDI naturally cooling, good liquid state can be formed, thus can adopt the mode of transport of common barreled TDI, transport and store convenient, safety, be easy to use.
In thick TDI, the fusing point of TDI is 13.2 DEG C, and tar is long-chain macromolecule mixture, and its fusing point is higher than TDI, and because tar is mixture, concrete fusing point can not be surveyed.
The thick TDI in 45 ~ 55:45 ~ 55 for TDI and quality of coke tar ratio, after adding the anti-condensation additive of the thick TDI of the present invention, can make to keep good liquid state when minimum-8 ~-14 DEG C of temperature in the winter time, and do not solidify, can store normally and transport, be easy to use, do not need other measures.When not adding anti-condensation additive, reduce viscosity with temperature after being filled into bucket and increase sharply, temperature there will be surface dry junction phenomena lower than when 60 DEG C, not easily takes after being cooled to normal temperature, and extremely infusibilized.Because TDI is harmful influence, meeting air or water has explosion hazard, and high thickness or the thick TDI that solidifies are when the later stage uses, and cannot take out from pail pack, intractability increases greatly.
Illustrate below and the present invention is described further.
Embodiment 1
TDI production equipment is after tar concentration systems is by a large amount of TDI evaporation, and improve tar-concentration and form TDI/ quality of coke tar than the thick TDI being 50/50, its temperature is 158.7 DEG C.Thick TDI continuous print stable for component is sent into stirring tank, stirring tank chuck passes into recirculated water and thick TDI is cooled to 90 DEG C ± 5 DEG C, again anti-condensation additive is sent into stirring tank by transferpump, raw material and additive mass ratio are 5:1, after both being mixed by agitator, use automatic filling system, entrucking or barrelling.
The anti-condensation additive of thick TDI used, mixes obtained by the component of following mass ratio:
2.6-ditertbutylparacresol 1 part,
Dimethyl silicone oil 1 part.
Embodiment 2
TDI production equipment is after tar concentration systems is by a large amount of TDI evaporation, and improve tar-concentration and form TDI/ quality of coke tar than the thick TDI for 48.2/51.8, its temperature is 158.7 DEG C.Thick TDI continuous print stable for component is sent into stirring tank, stirring tank chuck passes into recirculated water and thick TDI is cooled to 100 DEG C ± 5 DEG C, again anti-condensation additive is sent into stirring tank by transferpump, raw material and additive mass ratio are 4 ~ 5:1, after both being mixed by agitator, use automatic filling system, entrucking or barrelling.
The anti-condensation additive of thick TDI used, mixes obtained by the component of following mass ratio:
2.6-ditertbutylparacresol 2 parts,
Dimethyl silicone oil 3 parts
Embodiment 3
TDI production equipment is after tar concentration systems is by a large amount of TDI evaporation, and improve tar-concentration and form TDI/ quality of coke tar than the thick TDI being 45/55, its temperature is 158.7 DEG C.Thick TDI continuous print stable for component is sent into stirring tank, stirring tank chuck passes into recirculated water and thick TDI is cooled to 110 DEG C ~ 120 DEG C, again anti-condensation additive is sent into stirring tank by transferpump, raw material and additive mass ratio are 3:1, after both being mixed by agitator, use automatic filling system, entrucking or barrelling.
The anti-condensation additive of thick TDI used, mixes obtained by the component of following mass ratio:
2.6-ditertbutylparacresol 3 parts,
Dimethyl silicone oil 7 parts.
Embodiment 4
TDI production equipment is after tar concentration systems is by a large amount of TDI evaporation, and improve tar-concentration and form TDI/ quality of coke tar than the thick TDI being 55/45, its temperature is 158.7 DEG C.Thick TDI continuous print stable for component is sent into stirring tank, stirring tank chuck passes into recirculated water and thick TDI is cooled to 80 DEG C ~ 90 DEG C, again anti-condensation additive is sent into stirring tank by transferpump, raw material and additive mass ratio are 8:1, after both being mixed by agitator, use automatic filling system, entrucking or barrelling.
The anti-condensation additive of thick TDI used, mixes obtained by the component of following mass ratio:
2.6-ditertbutylparacresol 4 parts,
Dimethyl silicone oil 1 part.
Embodiment 5
TDI production equipment is after tar concentration systems is by a large amount of TDI evaporation, and improve tar-concentration and form TDI/ quality of coke tar than the thick TDI being 52/48, its temperature is 158.7 DEG C.Thick TDI continuous print stable for component is sent into stirring tank, stirring tank chuck passes into recirculated water and thick TDI is cooled to 80 DEG C ~ 90 DEG C, again anti-condensation additive is sent into stirring tank by transferpump, raw material and additive mass ratio are 6:1, after both being mixed by agitator, use automatic filling system, entrucking or barrelling.
The anti-condensation additive of thick TDI used, mixes obtained by the component of following mass ratio:
2.6-ditertbutylparacresol 3 parts,
Dimethyl silicone oil 1 part.
Embodiment 6
TDI production equipment is after tar concentration systems is by a large amount of TDI evaporation, and improve tar-concentration and form TDI/ quality of coke tar than the thick TDI being 30/70, its temperature is greater than 150 DEG C.Thick TDI continuous print stable for component is sent into stirring tank, stirring tank chuck passes into recirculated water and thick TDI is cooled to 100 DEG C ~ 120 DEG C, again anti-condensation additive is sent into stirring tank by transferpump, raw material and additive mass ratio are 1:1, after both being mixed by agitator, use automatic filling system, entrucking or barrelling.
The anti-condensation additive of thick TDI used, mixes obtained by the component of following mass ratio:
2.6-ditertbutylparacresol 2 parts,
Dimethyl silicone oil 7 parts.
Embodiment 7
TDI production equipment is after tar concentration systems is by a large amount of TDI evaporation, and improve tar-concentration and form TDI/ quality of coke tar than the thick TDI being 80/20, its temperature is greater than 150 DEG C.Thick TDI continuous print stable for component is sent into stirring tank, stirring tank chuck passes into recirculated water and thick TDI is cooled to 80 DEG C ~ 100 DEG C, again anti-condensation additive is sent into stirring tank by transferpump, raw material and additive mass ratio are 7:1, after both being mixed by agitator, use automatic filling system, entrucking or barrelling.
The anti-condensation additive of thick TDI used, mixes obtained by the component of following mass ratio:
2.6-ditertbutylparacresol 5 parts,
Dimethyl silicone oil 3 parts.
Claims (5)
1. the anti-condensation additive of thick TDI, is characterized in that: comprise following component in mass ratio:
2.6-ditertbutylparacresol 1 ~ 7 part,
Dimethyl silicone oil 1 ~ 7 part;
Said components is mixed and obtains the anti-condensation additive of thick TDI.
2. the anti-condensation additive of the thick TDI of one according to claim 1, is characterized in that: in thick TDI, the mass ratio of contained TDI and tar is 45 ~ 55:45 ~ 55.
3. the using method of the thick anti-condensation additive of TDI as claimed in claim 1 or 2, is characterized in that, by thick TDI temperature control 80 ~ 120 DEG C, add anti-condensation additive under whipped state.
4. the using method of the anti-condensation additive of thick TDI according to claim 3, is characterized in that, the mass ratio of thick TDI and anti-condensation additive is 1 ~ 8:1.
5. the using method of the anti-condensation additive of thick TDI according to claim 3, is characterized in that, adds the thick TDI of anti-condensation additive by automatic filling system entrucking or barrelling.
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| CN201510436358.3A CN104987492B (en) | 2015-07-23 | 2015-07-23 | A kind of thick anti-condensation additives of TDI and its application method |
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| CN201510436358.3A CN104987492B (en) | 2015-07-23 | 2015-07-23 | A kind of thick anti-condensation additives of TDI and its application method |
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| CN104987492A true CN104987492A (en) | 2015-10-21 |
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Citations (4)
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|---|---|---|---|---|
| CN103554637A (en) * | 2013-10-24 | 2014-02-05 | 宁波一舟塑胶有限公司 | High-elasticity wear-resistant low-smoke halogen-free flame-retardant injection molding material and preparation method thereof |
| CN103554865A (en) * | 2013-10-14 | 2014-02-05 | 上海俊尓新材料有限公司 | High-flow PC/ABS alloy material and its preparation method and application thereof |
| CN104403186A (en) * | 2014-11-14 | 2015-03-11 | 宁波一舟塑胶有限公司 | Composite synergistic flame-retardant smoke-suppression low-smoke halogen-free framework material |
| CN104448672A (en) * | 2013-09-12 | 2015-03-25 | 黑龙江鑫达企业集团有限公司 | Antioxidant, high flow, halogen-free and flame retardant ABS and preparation process thereof |
-
2015
- 2015-07-23 CN CN201510436358.3A patent/CN104987492B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104448672A (en) * | 2013-09-12 | 2015-03-25 | 黑龙江鑫达企业集团有限公司 | Antioxidant, high flow, halogen-free and flame retardant ABS and preparation process thereof |
| CN103554865A (en) * | 2013-10-14 | 2014-02-05 | 上海俊尓新材料有限公司 | High-flow PC/ABS alloy material and its preparation method and application thereof |
| CN103554637A (en) * | 2013-10-24 | 2014-02-05 | 宁波一舟塑胶有限公司 | High-elasticity wear-resistant low-smoke halogen-free flame-retardant injection molding material and preparation method thereof |
| CN104403186A (en) * | 2014-11-14 | 2015-03-11 | 宁波一舟塑胶有限公司 | Composite synergistic flame-retardant smoke-suppression low-smoke halogen-free framework material |
Non-Patent Citations (1)
| Title |
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| 刘益军: "《聚氨酯原料及助剂手册》", 30 April 2005, 化学工业出版社 * |
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