CN1092082A - The production method of two (2-dimethylamino ethyl) ether catalysts during polyurethane high-elastic foam plastic is produced - Google Patents
The production method of two (2-dimethylamino ethyl) ether catalysts during polyurethane high-elastic foam plastic is produced Download PDFInfo
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- CN1092082A CN1092082A CN 93110706 CN93110706A CN1092082A CN 1092082 A CN1092082 A CN 1092082A CN 93110706 CN93110706 CN 93110706 CN 93110706 A CN93110706 A CN 93110706A CN 1092082 A CN1092082 A CN 1092082A
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- dimethylamino ethyl
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- foam plastic
- elastic foam
- ether
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Abstract
The present invention relates to the catalyzer in a kind of Chemical Manufacture, relate in particular to the production method of two (2-dimethylamino ethyl) ethers in a kind of polyurethane high-elastic foam plastic production.The present invention adopts the industrial chemicals that is easy to get, and through science, simple and practical and reasonable method processing, obtains two (2-dimethylamino ethyl) ethers through reaction of two steps and dehydration etc.The present invention compares with the method for external production like product, has that technology is simple, investment is little, with short production cycle, product yield height, Functionality, quality and appealing design and a low cost and other advantages, but also does not have three wastes problem.
Description
The present invention relates to the catalyzer in a kind of Chemical Manufacture, the production method of two (2-dimethylamino ethyl) ether catalysts during particularly a kind of polyurethane high-elastic foam plastic is produced.
At present, domestic manufacturer mostly adopts common soft bubble catalyzer in producing polyurethane high-elastic foam plastic, make the quality of high-elastic foam plastic not increase, and causes seat cushions also to need import.There is minority producer to adopt two (2-dimethylamino ethyl) ethers of import to produce high-elastic foam plastic, but needs a large amount of foreign exchange of cost country.There are problems such as the three wastes in method complexity, the cost height of external this catalyzer of manufacturer production, are not suitable for China's national situation, no manufacturer production in the native land.
Purpose of the present invention will overcome above-mentioned defective and deficiency exactly, develops a kind of method of this catalyzer of production of suitable China's national situation.
Technical scheme of the present invention is: Ethylene Dichloride, Trimethylamine 99 are made raw material, in the input autoclave pressure, pressure 0.5-2.0mPa, temperature 60-100 ℃, time 4-6 hour, generation amine salt-reaction solution is dropped in the normal pressure still again, be warming up to 100 ℃, dehydration-dropping diethylenetriamine, be warmed up to 120-160 ℃, time is 3-6 hour, generates thick product, by product and a spot of water-reaction solution is dropped in the still kettle, is heated to 100 ℃, dewatering-continuing is heated to 160-190 ℃, receives that the smart product of two (2-dimethylamino ethyl) ethers-remaining is by product.
Advantage of the present invention and effect be the relative external producer of its method method have simple and practical, investment is little, with short production cycle, raw material is easy to get, product yield height, good, the low cost and other advantages of quality, and easy to operate, the no three wastes; And the product of producing has been filled up domestic blank, is import substitute, can be country and saves a large amount of foreign exchanges.
Other advantage of the present invention will further be described below.
Embodiment:
With content is that 143 kilograms of 98% dichloroethyl ether and content are that 40% trimethylamine aqueous solution drops in the autoclave pressure for 430 kilograms, mixes, and pressure is 1.2-1.5mPa, and temperature is 60-80 ℃, and the reaction times is 5-6 hour, its chemical equation:
Again the amine salt reaction solution of producing is dropped in the normal pressure still, is warming up to 100 ℃ of dehydrations, until take off do till, by under meter control, slowly at the uniform velocity drip diethylenetriamine in the normal pressure still then, temperature is 145-155 ℃, the dropping time is 3.5 hours, its chemical equation:
fully react and obtain two thick products of (2-dimethylamino ethyl) ether and N-methyl diethylenetriamine by product after 4-5 hour, wherein also have and do not take off dried moisture content on a small quantity, this reaction solution is dropped in the still kettle, be heated to 100 ℃, with remaining small amount of moisture gasification, reach dehydration fully, continue heating then, to 186 ℃, two (2-dimethylamino ethyl) smart product receives by the condenser cooling, content reaches 98%, and quantity is 153 kilograms.Remaining by product N-methyl diethylenetriamine can continue heating and obtain above 190 ℃, as other organic synthesis raw material.
Claims (1)
1, the production method of two (2--dimethylamino ethyl) ether catalysts during polyurethane high-elastic foam plastic is produced is characterized in that:
(1) raw material dichloroethyl ether, Trimethylamine 99 are dropped in the autoclave pressure, its chemical molecular structural formula is:
Be warming up to 60-100 ℃, pressure is 0.5-2.0mPa, and the reaction times is 4-6 hour, and its chemical equation is:
Generate amine salt:
(2) amine salt is dropped in the normal pressure still, be warming up to 100 ℃, dehydration;
(3) slowly at the uniform velocity in the normal pressure still, drip diethylenetriamine,
Its chemical molecular formula structure is:
Be warming up to 120-160 ℃, the time is 3-6 hour, and its chemical equation is:
Fully obtain two thick products of (2--dimethylamino ethyl) ether and N-methyl diethylenetriamine by product and a spot of water after the reaction;
(4) above-mentioned reaction solution is dropped in the still kettle, be heated to 100 ℃, dehydration;
(5) continue to be heated to 160-190 ℃, obtain the smart product of two (2--dimethyl amido ethyl) ethers by condensing works, remaining is N--methyl diethylenetriamine by product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93110706 CN1036069C (en) | 1993-03-10 | 1993-03-10 | method for preparing bis (2-dimethylamino ethyl) ether catalyst in production of polyurethane high-elastic foam plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93110706 CN1036069C (en) | 1993-03-10 | 1993-03-10 | method for preparing bis (2-dimethylamino ethyl) ether catalyst in production of polyurethane high-elastic foam plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1092082A true CN1092082A (en) | 1994-09-14 |
| CN1036069C CN1036069C (en) | 1997-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93110706 Expired - Fee Related CN1036069C (en) | 1993-03-10 | 1993-03-10 | method for preparing bis (2-dimethylamino ethyl) ether catalyst in production of polyurethane high-elastic foam plastic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1036069C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102452946A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | Preparation method of bi-(2-dimethylamino ethyl)ether |
| CN102786495A (en) * | 2010-10-26 | 2012-11-21 | 中国石油化工股份有限公司 | Preparation method for N-methylmorpholine |
| CN102786427A (en) * | 2012-08-22 | 2012-11-21 | 浙江大学 | Synthetic method of bis-(2-dimethylaminoethyl)ether |
| CN103626721A (en) * | 2012-08-27 | 2014-03-12 | 中国石油化工股份有限公司 | Method for combined production of N-methyl morpholine and bis (2-dimethylaminoethyl) ether |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107286029A (en) * | 2016-04-05 | 2017-10-24 | 史小鸣 | The synthesis of double dimethylamino ethyl ethers |
-
1993
- 1993-03-10 CN CN 93110706 patent/CN1036069C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102452946A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | Preparation method of bi-(2-dimethylamino ethyl)ether |
| CN102452946B (en) * | 2010-10-25 | 2014-07-30 | 中国石油化工股份有限公司 | Preparation method of bi-(2-dimethylamino ethyl)ether |
| CN102786495A (en) * | 2010-10-26 | 2012-11-21 | 中国石油化工股份有限公司 | Preparation method for N-methylmorpholine |
| CN102786427A (en) * | 2012-08-22 | 2012-11-21 | 浙江大学 | Synthetic method of bis-(2-dimethylaminoethyl)ether |
| CN103626721A (en) * | 2012-08-27 | 2014-03-12 | 中国石油化工股份有限公司 | Method for combined production of N-methyl morpholine and bis (2-dimethylaminoethyl) ether |
| CN103626721B (en) * | 2012-08-27 | 2016-01-13 | 中国石油化工股份有限公司 | A kind of method of coproduction N-methylmorpholine and two (2-dimethylaminoethyl) ether |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1036069C (en) | 1997-10-08 |
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