CN106700031A - Treatment method of crude TDI - Google Patents
Treatment method of crude TDI Download PDFInfo
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- CN106700031A CN106700031A CN201710010927.7A CN201710010927A CN106700031A CN 106700031 A CN106700031 A CN 106700031A CN 201710010927 A CN201710010927 A CN 201710010927A CN 106700031 A CN106700031 A CN 106700031A
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- tdi
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- isocyanate
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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
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/727—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80 comprising distillation residues or non-distilled raw phosgenation products
-
- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6607—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6614—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6622—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3271
-
- 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
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/725—Combination of polyisocyanates of C08G18/78 with other polyisocyanates
-
- 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
- C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
-
- 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
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/143—Halogen containing compounds
- C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
-
- 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
- C08G2110/00—Foam properties
- C08G2110/0025—Foam properties rigid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
- C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to the technical field of toluene diisocynate synthesis, in particular to the technical field of waste treatment during the synthesis process, and discloses a treatment method of crude TDI. The crude TDI is modified through TDI 80/20 and polymeric MDI, novel modified isocyanate is produced, which can serve as a raw material of rigid polyurethane foam to be mixed with hard-foam polyether to produce a rigid polyurethane foam thermal insulation material. The method overcomes the technical fields in the prior art that crude TDI is high in treatment cost, tar solid waste is produced and is not easy to treat and the environment is polluted during the TDI synthesis process, can effectively reduce tar solid waste, reduces environment pollution, and has good economic benefit.
Description
Technical field
The present invention relates to toluene di-isocyanate(TDI) synthesis technical field, more particularly, to waste treatment technique in building-up process
Field.
Background technology
TDI is the abbreviation of toluene di-isocyanate(TDI), is the important foundation raw material for preparing polyurethane material.Phosgenation is produced
TDI, dominating process route is to utilize dinitrotoluene (DNT)（DNT）With hydrogen reaction generation toluenediamine（TDA）, then by itself and phosgene
Generation photochemical reaction generates TDI, and finally purified to be refining to obtain each series of products, such as TDI 80/20, it is containing 80% mass hundred
Divide the mixture of 2,6-toluene di-isocyanate(TDI) of the 2,4 toluene diisocyanate and 20% weight/mass percentage composition of content.
Side reaction can produce a large amount of tar in the photochemical reaction technique of TDI productions, formed with the TDI that main reaction is generated and mixed
Thing, after photochemical reaction product obtains TDI products through rectification and purification, still contains substantial amounts of TDI in remaining tar, the mixture is referred to as
Thick TDI.The conventional process mode of thick TDI, is to be carried out heating evaporation TDI, remaining burnt so as to realize the separation and recovery of TDI
Oily bottoms solid waste is typically processed using burning process, can produce substantial amounts of hydrocarbon, oxynitrides and cigarette
Mist, and processing these waste gas can produce a large amount of waste water, form pollution again to environment, and processing cost is very high.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of processing method of thick TDI, it is to avoid prior art treatment is burnt
Oily solid waste high cost, the problem of environmental pollution, realize the recycling of thick TDI, effectively reduce the product of tar solid waste
It is raw, environmental pollution is reduced, with good economic benefit.
In order to solve the above technical problems, the technical solution used in the present invention is：
The processing method of thick TDI, the thick TDI is produced, institute in phosgenation production toluene di-isocyanate(TDI) TDI 80/20
The mass ratio for stating contained toluene di-isocyanate(TDI) and tar in thick TDI is 45~55:45~55, the treating method comprises：
S1, by the thick TDI in the molten state with TDI 80/20, polymeric MDI in mass ratio be 24~30：3~8：60~70
Mixing, generates modified isocyanate, and the viscosity of the modified isocyanate is described modified different between 2700~3200mPas
The mass fraction of NCO contained by cyanate is more than or equal to 30%；
S2, by the modified isocyanate combined with rigid-foam polyether material hybrid reaction, produce Polyurethane Thermal Insulation Building Materials.
In the inventive method, the modified isocyanate of step S1 generations keeps one at normal temperatures in the liquid condition of stabilization
Fixed viscosity, with good reactivity, thus can be used for the production of Polyurethane Thermal Insulation Building Materials.
Further, in the step S1, by the thick TDI at 90~100 DEG C, it is added to pre- mixed TDI 80/
20 mix with the mixed solution of polymeric MDI.
Preferably, the mass ratio of the thick TDI and TDI 80/20, polymeric MDI is 30: 5: 65.
Rigid-foam polyether combination material includes PPG, PEPA, foaming agent, chain extender, crosslinking agent, surface-active
Agent and catalyst.
Preferably, it is 1~1.1 that the modified isocyanate combines material mass ratio with rigid-foam polyether:1.
It is using the beneficial effect produced by above-mentioned technical proposal：The processing method of thick TDI of the invention is enough by TDI and Jiao
Oil meets raw materials of a certain proportion of thick TDI as hard polyurethane foam, the Polyurethane Thermal Insulation Building Materials performance of production with it is existing
Technology is consistent using the Polyurethane Thermal Insulation Building Materials performance of polymeric MDI production, has both solved the intractability of dangerous waste tar foam
Big problem, saves handling for the substantial amounts of fund of TDI manufacturing enterprises and cumbersome environmentally friendly formality again, more reduces TDI productions enterprise
The energy consumption of the thick TDI of industry treatment, remarkable in economical benefits.
Specific embodiment
For thick TDI processing costs are high in solution prior art TDI building-up processes, produce tar solid waste not disposable and pollution
The technical problem of environment, the present invention provides a kind of processing method of thick TDI, by thick TDI through the modified places of TDI 80/20, polymeric MDI
Reason, generates new modified isocyanate, material mixture manufacturing can be combined with rigid-foam polyether and is gathered as the raw material of hard polyurethane foam
Urethane is hard bubbled insulation material, it is thus possible to effectively reduce the generation of tar solid waste, reduces environmental pollution, with good economy effect
Benefit.
The present invention is described in further detail below.
During thick TDI refers to phosgenation production toluene di-isocyanate(TDI) TDI 80/20 in this specification, after photochemical reaction
Product is isolated to the blended tars containing 50% or so toluene di-isocyanate(TDI).TDI 80/20 is containing 80% mass percentage
The mixture of 2,6-toluene di-isocyanate(TDI) of the 2,4 toluene diisocyanate of content and 20% weight/mass percentage composition.
The processing method of thick TDI, contained toluene di-isocyanate(TDI) and the mass ratio of tar are 45~55 in thick TDI:45~
55, the treating method comprises：
S1, by the thick TDI in the molten state with TDI 80/20, polymeric MDI in mass ratio be 24~30：3~8：60~70
Mixing, generates modified isocyanate, and the viscosity of the modified isocyanate is in 2700~3200mPas（Mpas）Between,
The mass fraction of NCO contained by the modified isocyanate is more than or equal to 30%, i.e. modified isocyanate NCO% >=30%；
S2, by the modified isocyanate combined with rigid-foam polyether material hybrid reaction, produce Polyurethane Thermal Insulation Building Materials.
Preferably, it is 1~1.1 to control modified isocyanate that material mass ratio is combined with rigid-foam polyether:1.
In the inventive method, the modified isocyanate of step S1 generations keeps one at normal temperatures in the liquid condition of stabilization
Fixed viscosity, with good reactivity, thus can be used for the production of Polyurethane Thermal Insulation Building Materials.
Polyurethane material includes soft foam material and rigid foam material, and hard polyurethane foam is with isocyanates（It is commonly called as black material）With it is hard
Bubble polyether combined material（White material is commonly called as, containing foaming agent）, by high pressure foaming machine premix, pipette tips high pressure mixing, through milky white, gel,
Foam, be cross-linked to and be fully cured, the rigid closed cell high molecular polymer of formation, with water proof thermal insulation function.
It is general, rigid-foam polyether combination material include PPG, PEPA, foaming agent, chain extender, crosslinking agent,
Surfactant and catalyst.Those skilled in the art can voluntarily select according to the performance of required Polyurethane Thermal Insulation Building Materials
With suitable rigid-foam polyether combination material raw material, in the absence of technical difficulty.
The embodiment and prior art for naming thick TDI productions Polyurethane Thermal Insulation Building Materials of the invention are given birth to polymeric MDI
Produce Polyurethane Thermal Insulation Building Materials comparative example and compare explanation.
Embodiment
S1, by thick TDI at 90~100 DEG C, be added in the mixed solution of pre- mixed TDI 80/20 and polymeric MDI
Mixing, generates modified isocyanate, and the mass ratio of thick TDI and TDI 80/20, polymeric MDI is 30: 5:65, control production
The viscosity of modified isocyanate between 2700~3200mPas, NCO% >=30%；
S2, by modified isocyanate combined with rigid-foam polyether material hybrid reaction, foaming generation Polyurethane Thermal Insulation Building Materials.
Comparative example
Using polymeric MDI as isocyanates raw material, material hybrid reaction, foaming generation are combined with embodiment identical rigid-foam polyether
Polyurethane Thermal Insulation Building Materials.
The performance of embodiment and comparative example raw material components and prepared spray polyurethane foam is as shown in the table.
Found out by upper table data, the Polyurethane Thermal Insulation Building Materials performance of embodiment of the present invention production is used with prior art and is polymerized
The Polyurethane Thermal Insulation Building Materials performance of MDI productions is consistent.
The processing method of the thick TDI for providing the present invention above is described in detail, application specific case in the present invention
Embodiments of the present invention are set forth, the explanation of above example is only intended to help and understands the present invention, it is noted that
To those of ordinary skill in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out some
Improve, these improvement are also fallen into the protection domain of the claims in the present invention.
Claims (5)
1. the processing method of thick TDI, the thick TDI be it is produced in phosgenation production toluene di-isocyanate(TDI) TDI 80/20,
Contained toluene di-isocyanate(TDI) and the mass ratio of tar are 45~55 in the thick TDI:45~55, it is characterised in that the place
Reason method includes：
S1, by the thick TDI in the molten state with TDI 80/20, polymeric MDI in mass ratio be 24~30：3~8：60~70
Mixing, generates modified isocyanate, and the viscosity of the modified isocyanate is described modified different between 2700~3200mPas
The mass fraction of NCO contained by cyanate is more than or equal to 30%；
S2, by the modified isocyanate combined with rigid-foam polyether material hybrid reaction, produce Polyurethane Thermal Insulation Building Materials.
2. the processing method of thick TDI according to claim 1, it is characterised in that in the step S1, by the thick TDI
At 90~100 DEG C, it is added to pre- mixed TDI 80/20 and mixes with the mixed solution of polymeric MDI.
3. the processing method of thick TDI according to claim 1, it is characterised in that in the step S1, the thick TDI with
The mass ratio of TDI 80/20, polymeric MDI is 30: 5: 65.
4. the processing method of thick TDI according to claim 1, it is characterised in that in the step S2, rigid-foam polyether combination
Material includes PPG, PEPA, foaming agent, chain extender, crosslinking agent, surfactant and catalyst.
5. the processing method of thick TDI according to claim 4, it is characterised in that in the step S2, the modified isocyanide
It is 1~1.1 that acid esters combines material mass ratio with rigid-foam polyether:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010927.7A CN106700031A (en) | 2017-01-06 | 2017-01-06 | Treatment method of crude TDI |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010927.7A CN106700031A (en) | 2017-01-06 | 2017-01-06 | Treatment method of crude TDI |
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| CN106700031A true CN106700031A (en) | 2017-05-24 |
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| CN201710010927.7A Pending CN106700031A (en) | 2017-01-06 | 2017-01-06 | Treatment method of crude TDI |
Country Status (1)
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| CN (1) | CN106700031A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107337777A (en) * | 2017-07-03 | 2017-11-10 | 甘肃银光聚银化工有限公司 | Application process of the hydrogenated tar in soft polyurethane foam in a kind of TDA productions |
| CN113717078A (en) * | 2021-09-17 | 2021-11-30 | 万华化学集团股份有限公司 | Method for co-producing stabilized tar by TDI and utilization method of stabilized tar |
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|---|---|---|---|---|
| CN1075321A (en) * | 1993-01-08 | 1993-08-18 | 郑州工学院 | Process for synthesis of reactive wood powder polyurethane foamed material |
| CN1113315A (en) * | 1994-03-07 | 1995-12-13 | 松下冷机株式会社 | Thermo-isolating box |
| CN101191010A (en) * | 2006-11-20 | 2008-06-04 | 中国船舶重工集团公司第七二五研究所 | Fibre enhancement modifying method for polyurethane foam plastic |
| CN101283013A (en) * | 2005-08-17 | 2008-10-08 | 圣戈班柴恩纽克斯特性塑料公司 | Hydrolysis resistant cellular material, the composition and method for the production thereof |
| CN101608012A (en) * | 2008-06-18 | 2009-12-23 | 三洋化成工业株式会社 | The manufacture method of hard polyurethane foams |
| CN103502295A (en) * | 2011-01-27 | 2014-01-08 | 格林希尔化学公司 | Composition for one-component polyurethane foams having low free mononmeric MDI content |
-
2017
- 2017-01-06 CN CN201710010927.7A patent/CN106700031A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075321A (en) * | 1993-01-08 | 1993-08-18 | 郑州工学院 | Process for synthesis of reactive wood powder polyurethane foamed material |
| CN1113315A (en) * | 1994-03-07 | 1995-12-13 | 松下冷机株式会社 | Thermo-isolating box |
| CN101283013A (en) * | 2005-08-17 | 2008-10-08 | 圣戈班柴恩纽克斯特性塑料公司 | Hydrolysis resistant cellular material, the composition and method for the production thereof |
| CN101191010A (en) * | 2006-11-20 | 2008-06-04 | 中国船舶重工集团公司第七二五研究所 | Fibre enhancement modifying method for polyurethane foam plastic |
| CN101608012A (en) * | 2008-06-18 | 2009-12-23 | 三洋化成工业株式会社 | The manufacture method of hard polyurethane foams |
| CN103502295A (en) * | 2011-01-27 | 2014-01-08 | 格林希尔化学公司 | Composition for one-component polyurethane foams having low free mononmeric MDI content |
Non-Patent Citations (1)
| Title |
|---|
| 程曾越: "《通用树脂实用技术手册》", 30 November 1999, 中国石化出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107337777A (en) * | 2017-07-03 | 2017-11-10 | 甘肃银光聚银化工有限公司 | Application process of the hydrogenated tar in soft polyurethane foam in a kind of TDA productions |
| CN113717078A (en) * | 2021-09-17 | 2021-11-30 | 万华化学集团股份有限公司 | Method for co-producing stabilized tar by TDI and utilization method of stabilized tar |
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