CN103848949A - Process of synthetizing polyurethane - Google Patents
Process of synthetizing polyurethane Download PDFInfo
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- CN103848949A CN103848949A CN201410082207.8A CN201410082207A CN103848949A CN 103848949 A CN103848949 A CN 103848949A CN 201410082207 A CN201410082207 A CN 201410082207A CN 103848949 A CN103848949 A CN 103848949A
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- reactor
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- prepolymer
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- triethylamine
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Abstract
The invention relates to a process of synthetizing polyurethane. The process comprises the following steps: a, in the presence of dry inert gas, adding dehydrated polyether diol, castor oil, isophorone diisocyanate and dibutyltin dilaurate into a reactor, stirring, adding 1, 4-butanediol into the reactor, stirring and reacting, adding dimethylolpropionic acid, epoxy resin and trimethylolpropane into the reactor, reacting, cooling and adding methyl methacrylate to obtain a prepolymer; b, neutralizing and emulsifying the prepolymer at normal temperature by using triethylamine to obtain an emulsion A; c, neutralizing and emulsifying the prepolymer by using triethylamine to obtain an emulsion B; and d, heating the emulsion A and the emulsion B to 75-80 DEG C, adding an initiator, preserving the temperature for 2-3 hours, cooling and discharging to obtain the polyurethane. The process provided by the invention is simple, little in waste in the productive process and simple in production process and has the advantages that the produced polyurethane has good toughness, the raw material is saved and the energy consumption in the productive process is reduced.
Description
Technical field
The invention belongs to organic synthesis field, be specifically related to a kind of synthesis technique of urethane.
Background technology
Urethane refers to a family macromolecule that contains amido formate feature unit in main chain.This macromolecular material is widely used in tamanori, coating, low speed tire, packing ring, the industrial circles such as car pad.Be used to manufacture various foams and plastic sponge at daily life field urethane.Urethane is also used to manufacture and medical devices.Urethane has good toughness and self-lubricating function, and use is now very extensive, has good use properties, the relative inorganic materials long service life of polyurethane material, result of use is good, but existing urethane synthesis technique is more complicated, and the waste material of generation is difficult for removing.
Summary of the invention
The synthesis technique that the object of this invention is to provide a kind of urethane, synthetic method is simple, and the middle waste material of generation is less, has reduced the discharge of refuse.
The present invention is achieved through the following technical solutions:
A kind of synthesis technique of urethane, comprise the following steps: a: under the protection of dry inert gas, add reactor to stir the polyether glycol dewatering, Viscotrol C, isophorone diisocyanate, dibutyl tin laurate, in reactor, add BDO, at 50-60 DEG C, stir 0.5-1h, in reactor, add dimethylol propionic acid, epoxy resin and TriMethylolPropane(TMP) again, reaction 0.3-1.2h, cooling, add methyl methacrylate, obtain PU/MMA prepolymer; B: by PU/MMA prepolymer with triethylamine at normal temperatures in and emulsification, obtain latex A; C, by PU/MMA prepolymer with triethylamine at 50-55 DEG C in and emulsification, obtain emulsion B; D, latex A and emulsion B are heated to 75-80 DEG C, add initiator azo-bis-isobutyl cyanide, insulation 2-3 hour, cooling discharge, obtains urethane.
Described polyether glycol 30-40 part, Viscotrol C 15-20 part, isophorone diisocyanate 35-50 part, dibutyl tin laurate 3-5 part, BDO 5-8 part.
Described dimethylol propionic acid 10-12 part, epoxy resin 8-10 part and TriMethylolPropane(TMP) 5-7 part.
Described methyl methacrylate 55-70 part.
Described azo-bis-isobutyl cyanide 4-6 part.Described triethylamine is 25-30 part.
Beneficial effect of the present invention: method provided by the invention is simple, the urethane of production has good toughness, and in production process, waste material is less, and production technique is simple, has saved raw material use, also reduces the energy consumption in production process.
Embodiment
A kind of synthesis technique of urethane, comprise the following steps: a: under the protection of dry inert gas, add reactor to stir 3 parts of 35 parts of the polyether glycols dewatering, 15 parts of Viscotrol C, 40 parts of isophorone diisocyanates, dibutyl tin laurate, in reactor, add 1,6 parts of 4-butyleneglycols, at 50-60 DEG C, stir 0.5-1h, again to adding 6 parts of 10 parts of dimethylol propionic acids, 10 parts of epoxy resin and TriMethylolPropane(TMP)s in reactor, reaction 0.3-1.2h, cooling, add 60 parts of methyl methacrylates, obtain PU/MMA prepolymer; B: by PU/MMA prepolymer with 10 parts of triethylamines at normal temperatures in and emulsification, obtain latex A; C, by PU/MMA prepolymer with during 20 parts of triethylamines are at 50-55 DEG C and emulsification, obtain emulsion B; D, latex A and emulsion B are heated to 75-80 DEG C, add 6 parts of initiator azo-bis-isobutyl cyanides, insulation 2-3 hour, cooling discharge, obtains urethane.
Claims (1)
1. the synthesis technique of a urethane, it is characterized in that, comprise the following steps: a: under the protection of dry inert gas, add reactor to stir the polyether glycol dewatering, Viscotrol C, isophorone diisocyanate, dibutyl tin laurate, in reactor, add 1,4-butyleneglycol, at 50-60 DEG C, stir 0.5-1h, in reactor, add dimethylol propionic acid, epoxy resin and TriMethylolPropane(TMP) again, reaction 0.3-1.2h, cooling, adds methyl methacrylate, obtains PU/MMA prepolymer; B: by PU/MMA prepolymer with triethylamine at normal temperatures in and emulsification, obtain latex A; C, by PU/MMA prepolymer with triethylamine at 50-55 DEG C in and emulsification, obtain emulsion B; D, latex A and emulsion B are heated to 75-80 DEG C, add initiator azo-bis-isobutyl cyanide, insulation 2-3 hour, cooling discharge, obtains urethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082207.8A CN103848949A (en) | 2014-03-07 | 2014-03-07 | Process of synthetizing polyurethane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082207.8A CN103848949A (en) | 2014-03-07 | 2014-03-07 | Process of synthetizing polyurethane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103848949A true CN103848949A (en) | 2014-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410082207.8A Pending CN103848949A (en) | 2014-03-07 | 2014-03-07 | Process of synthetizing polyurethane |
Country Status (1)
| Country | Link |
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| CN (1) | CN103848949A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104356343A (en) * | 2014-11-04 | 2015-02-18 | 佛山市功能高分子材料与精细化学品专业中心 | Epoxy resin and castor oil double-modified polyurethane leather finishing agent and preparation method thereof |
| CN105052902A (en) * | 2015-08-04 | 2015-11-18 | 清华大学 | Sustained and controlled release pesticide nanometer emulsion and preparation method thereof |
| CN109651588A (en) * | 2018-11-21 | 2019-04-19 | 万华化学集团股份有限公司 | Castor oil modified cation self-crosslinkable polyurethane polyurea water dispersion and preparation method and application |
| CN112063259A (en) * | 2020-08-12 | 2020-12-11 | 安徽省英菲尼科技股份有限公司 | Halogen-free environment-friendly polyurethane oily paint and preparation method thereof |
| CN112080185A (en) * | 2020-09-29 | 2020-12-15 | 湖北奥斯鸣环保科技有限公司 | Waterborne polyurethane industrial paint and preparation method thereof |
| CN112111206A (en) * | 2020-09-29 | 2020-12-22 | 湖北奥斯鸣环保科技有限公司 | Flame-retardant high-polymer fireproof coating for steel structure and preparation method thereof |
Citations (3)
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| US20060127435A1 (en) * | 1999-07-03 | 2006-06-15 | Termiguard, Inc. | Sustained release pest control products and their applications |
| CN102786637A (en) * | 2011-05-17 | 2012-11-21 | 上海富臣化工有限公司 | Composite modified aqueous polyurethane resin and its preparation method |
| CN102807664A (en) * | 2012-08-20 | 2012-12-05 | 陕西科技大学 | Method for preparing acrylate modified water-based polyurethane |
-
2014
- 2014-03-07 CN CN201410082207.8A patent/CN103848949A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060127435A1 (en) * | 1999-07-03 | 2006-06-15 | Termiguard, Inc. | Sustained release pest control products and their applications |
| CN102786637A (en) * | 2011-05-17 | 2012-11-21 | 上海富臣化工有限公司 | Composite modified aqueous polyurethane resin and its preparation method |
| CN102807664A (en) * | 2012-08-20 | 2012-12-05 | 陕西科技大学 | Method for preparing acrylate modified water-based polyurethane |
Non-Patent Citations (3)
| Title |
|---|
| 刘厚钧主编: "《聚氨酯弹性体手册 第2版》", 31 August 2012, article "水性聚氨酯分散液的物理化学", pages: 392 - 394 * |
| 李正军等编著: "《皮革涂饰剂与整饰技术》", 31 July 2002, article "乳化条件", pages: 51-52 * |
| 许戈文等编著: "《水性聚氨酯材料》", 28 February 2007, article "水乳性聚氨酯的合成", pages: 61 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104356343A (en) * | 2014-11-04 | 2015-02-18 | 佛山市功能高分子材料与精细化学品专业中心 | Epoxy resin and castor oil double-modified polyurethane leather finishing agent and preparation method thereof |
| CN105052902A (en) * | 2015-08-04 | 2015-11-18 | 清华大学 | Sustained and controlled release pesticide nanometer emulsion and preparation method thereof |
| CN105052902B (en) * | 2015-08-04 | 2018-02-09 | 清华大学 | Slow controlled release pesticide nano emulsion and preparation method thereof |
| CN109651588A (en) * | 2018-11-21 | 2019-04-19 | 万华化学集团股份有限公司 | Castor oil modified cation self-crosslinkable polyurethane polyurea water dispersion and preparation method and application |
| CN109651588B (en) * | 2018-11-21 | 2021-09-07 | 万华化学集团股份有限公司 | Castor oil modified cationic self-crosslinking polyurethane polyurea aqueous dispersion, preparation method and application |
| CN112063259A (en) * | 2020-08-12 | 2020-12-11 | 安徽省英菲尼科技股份有限公司 | Halogen-free environment-friendly polyurethane oily paint and preparation method thereof |
| CN112080185A (en) * | 2020-09-29 | 2020-12-15 | 湖北奥斯鸣环保科技有限公司 | Waterborne polyurethane industrial paint and preparation method thereof |
| CN112111206A (en) * | 2020-09-29 | 2020-12-22 | 湖北奥斯鸣环保科技有限公司 | Flame-retardant high-polymer fireproof coating for steel structure and preparation method thereof |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140611 |