CN107522855A - The method that polyether polyol odor is reduced by trapping agent and catalysis oxidation collaboration - Google Patents
The method that polyether polyol odor is reduced by trapping agent and catalysis oxidation collaboration Download PDFInfo
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- CN107522855A CN107522855A CN201710788714.7A CN201710788714A CN107522855A CN 107522855 A CN107522855 A CN 107522855A CN 201710788714 A CN201710788714 A CN 201710788714A CN 107522855 A CN107522855 A CN 107522855A
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- China
- Prior art keywords
- trapping agent
- polyether polyol
- ppg
- reduced
- low molecule
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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
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyethers (AREA)
Abstract
The invention discloses a kind of method for reducing polyether polyol odor by aldehydes trapping agent and photochemical catalytic oxidation collaboration.This method is in the last handling process of Contents In Polyether Polyol, low molecule aldehydes trapping agent is added first, then titanium dioxide optical catalyst catalysis oxidation aldehyde material is used again, and collaboration reduces the concentration of low molecule aldehyde material, to reach the purpose for reducing polyether polyol odor.The content of the low molecule aldehydes such as PPG prepared by the present invention, its free formaldehyde, acetaldehyde is low, and product quality is stable, and performance is good.
Description
Technical field
It is specifically a kind of to pass through aldehydes trapping agent and catalysis oxygen the invention belongs to the preparation method of high-molecular compound
Change the method that collaboration reduces polyether polyol odor.
Background technology
PPG extensive application, such as manufacturing polyurethane high-elastic cushion, direction in the automotive industry
Disk etc..With the increasingly enhancing of people's environmental consciousness, have become limit the problems such as volatility, high smell existing for polyurethane product
An important factor for making its application.Country issued Air Quality Evaluation guide in passenger car on March 1st, 2012（GB/T
27630—2011）, it is specified that the content of the volatilization aldehyde material such as in-car formaldehyde in air, acetaldehyde.From synthesis material and technical process
Analyzed, the smell of Contents In Polyether Polyol is mainly unreacted propylene oxide monomer, and low molecular aldehyde material produces
's.This not only have impact on the comfortableness that automotive trim uses, and also health is formed and endangered.Therefore, PPG is found out
The reason for producing smell is simultaneously effectively solved, and just turns into the key of lifting product quality.At present, studies in China personnel and correlation
Enterprise is all explored constantly.Such as utility model patent (application number：201220436842.8) " vaporizing extract process removes PPG
Peculiar smell device ", it is reduced the effect of polyether polyol odor；Patent of invention (application number：201410383509.9) " reduce polyethers
The method of polyol amount ", reach the poly- ammonia of improvement by adding the volatile organic matter in hydrogen peroxide oxidation PPG
The purpose of ester articles smell.Good brightness of the Qin of Qingdao University of Science and Technology et al. report " hydrogen peroxide reduce PPG in volatility
The technical study of aldehyde material " [contemporary chemical industry, 2015,44 (1):49-50], they think the technique：(1) both can be notable
PPG volatile aldehyde material is removed, while polyether polyol odor can be reduced again；(2) simple and easy, cost is low
It is honest and clean, both it can be widely applied to without scrap build in PPG batch production.What the above method was directed to is all to product
Post-processed to reduce the smell of PPG.Wherein vaporizing extract process is physical process, required although technique is simple
Temperature is higher, and energy consumption is big；Hydrogen peroxide oxidation process is chemical process, although reduction product odour effect is good, reaction condition
Control relatively harsh.
The content of the invention
For the problems of prior art and deficiency, it is an object of the invention to provide one kind by aldehydes trapping agent and
The method that catalysis oxidation collaboration reduces polyether polyol odor.This method is in the last handling process of Contents In Polyether Polyol, both
Comprising physical method, chemical method is further related to, the smell that their synergy preferably solves Contents In Polyether Polyol is asked
Topic.
The purpose of the present invention is achieved through the following technical solutions：
A kind of method that polyether polyol odor is reduced by trapping agent and catalysis oxidation collaboration, it is characterised in that：It is more in polyethers
In the last handling process of first alcohol product, low molecule aldehydes trapping agent is added first, is then urged again using titanium dioxide optical catalyst
Change oxidation aldehyde material, the synergy of above-mentioned two step, be effectively reduced low molecule aldehydes formaldehyde, acetaldehyde in PPG
Content.
Heretofore described low molecule aldehydes trapping agent is the one or more in carbonyl hydrazides, imidazolinedione, semicarbazides
Mixture, its dosage accounts for the 1% ~ 5% of PPG, and trap time is 1 ~ 5 hour.The titanium dioxide optical catalyst dosage
For the 1 ~ 5% of PPG, controlling reaction temperature is 30 ~ 80oC。
Compared with prior art, the low molecule aldehydes such as PPG, its free formaldehyde, acetaldehyde that prepared by the present invention contains
Low, product quality stabilization is measured, performance is good.
Beneficial effects of the present invention：
(1) by low molecule aldehydes trapping agent carbonyl hydrazides, imidazolinedione, semicarbazides etc., the reduction of aldehyde matter content is realized.
(2) using titanium dioxide as catalyst, low molecule aldehyde material can be aoxidized under the conditions of relatively mild, from
And reduce the smell of PPG.
(3) requirement of polyurethane material production can preferably be met, it is good applied to auto industry environment protecting.
Embodiment
Embodiment 1
A kind of method that polyether polyol odor is reduced by aldehydes trapping agent and catalysis oxidation collaboration：
In the PPG that ethylene glycol is initiator synthesis, low molecule aldehydes trapping agent " carbonyl hydrazides " is added first, and it is used
Amount accounts for the 1% of PPG, and trap time is 2 hours.Then titanium dioxide optical catalyst catalysis oxidation aldehydes are used again
Matter, the dosage of catalyst are the 1% of PPG, controlling reaction temperature 50oC。
The conventional method synthesizing polyether of subordinate list 1 is compared with aldehyde matter content in this example polyethers
Embodiment 2
A kind of method that polyether polyol odor is reduced by aldehydes trapping agent and catalysis oxidation collaboration：
In the PPG that ethylene glycol is initiator synthesis, low molecule aldehydes trapping agent " imidazolinedione " is added first,
Its dosage accounts for the 3% of PPG, and trap time is 3 hours.Then urged again using Titanium Dioxide oxidation aldehyde material
The dosage of agent is the 2% of PPG, controlling reaction temperature 70oC。
The conventional method synthesizing polyether of subordinate list 2 is compared with aldehyde matter content in this example polyethers
Claims (3)
- A kind of 1. method that polyether polyol odor is reduced by trapping agent and catalysis oxidation collaboration, it is characterised in that：In polyethers In the last handling process of polyol product, low molecule aldehydes trapping agent is added first, then uses titanium dioxide optical catalyst again Catalysis oxidation aldehyde material, the synergy of above-mentioned two step, it is effectively reduced low molecule aldehydes formaldehyde, second in PPG The content of aldehyde.
- 2. the method according to claim 1 that polyether polyol odor is reduced by trapping agent and photochemical catalytic oxidation collaboration, It is characterized in that：Low molecule aldehydes trapping agent is carbonyl hydrazides, imidazolinedione, one or more of mixtures of semicarbazides, its Dosage accounts for the 0.5% ~ 5% of PPG；Trap time is 1 ~ 5 hour.
- 3. the method according to claim 1 that polyether polyol odor is reduced by trapping agent and photochemical catalytic oxidation collaboration, It is characterized in that：Using titanium dioxide optical catalyst catalysis oxidation aldehyde material, the dosage of catalyst for PPG 1 ~ 5%, controlling reaction temperature is 30 ~ 80oC。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710788714.7A CN107522855A (en) | 2017-09-05 | 2017-09-05 | The method that polyether polyol odor is reduced by trapping agent and catalysis oxidation collaboration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710788714.7A CN107522855A (en) | 2017-09-05 | 2017-09-05 | The method that polyether polyol odor is reduced by trapping agent and catalysis oxidation collaboration |
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| CN107522855A true CN107522855A (en) | 2017-12-29 |
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| CN201710788714.7A Pending CN107522855A (en) | 2017-09-05 | 2017-09-05 | The method that polyether polyol odor is reduced by trapping agent and catalysis oxidation collaboration |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130389A (en) * | 2014-08-06 | 2014-11-05 | 山东蓝星东大化工有限责任公司 | Method for reducing VOC (volatile organic compound) content of polyether polyol |
| CN106832176A (en) * | 2017-02-17 | 2017-06-13 | 苏州高夫高分子材料有限公司 | Wall sound-isolation pad polyurethane foam and preparation method thereof before a kind of environmentally friendly vehicle |
-
2017
- 2017-09-05 CN CN201710788714.7A patent/CN107522855A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130389A (en) * | 2014-08-06 | 2014-11-05 | 山东蓝星东大化工有限责任公司 | Method for reducing VOC (volatile organic compound) content of polyether polyol |
| CN106832176A (en) * | 2017-02-17 | 2017-06-13 | 苏州高夫高分子材料有限公司 | Wall sound-isolation pad polyurethane foam and preparation method thereof before a kind of environmentally friendly vehicle |
Non-Patent Citations (2)
| Title |
|---|
| 周宏湘: "《染整新技术问答》", 30 April 1998, 纺织出版社 * |
| 马兴元: "《合成革化学与工艺学》", 30 November 2015, 中国轻工业出版社 * |
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Application publication date: 20171229 |
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| RJ01 | Rejection of invention patent application after publication |