CN106589345A - Polyether polyol refining method capable of reducing VOC (volatile organic compound) content and odor - Google Patents

Polyether polyol refining method capable of reducing VOC (volatile organic compound) content and odor Download PDF

Info

Publication number
CN106589345A
CN106589345A CN201611169822.8A CN201611169822A CN106589345A CN 106589345 A CN106589345 A CN 106589345A CN 201611169822 A CN201611169822 A CN 201611169822A CN 106589345 A CN106589345 A CN 106589345A
Authority
CN
China
Prior art keywords
ppg
polyether polyol
adsorbent
refined
content
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201611169822.8A
Other languages
Chinese (zh)
Other versions
CN106589345B (en
Inventor
宗红亮
俞中锋
叶丞
张丽君
申宝兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Zhongshan new material Co.,Ltd.
Original Assignee
JIANGSU ZHONGSHANG CHEMICAL CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JIANGSU ZHONGSHANG CHEMICAL CO Ltd filed Critical JIANGSU ZHONGSHANG CHEMICAL CO Ltd
Priority to CN201611169822.8A priority Critical patent/CN106589345B/en
Publication of CN106589345A publication Critical patent/CN106589345A/en
Application granted granted Critical
Publication of CN106589345B publication Critical patent/CN106589345B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/30—Post-polymerisation treatment, e.g. recovery, purification, drying
    • 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
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • 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
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4833—Polyethers containing oxyethylene units
    • 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
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
    • C08G65/2603—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
    • C08G65/2606—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
    • C08G65/2609—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aliphatic hydroxyl groups

Landscapes

  • 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 relates to a posttreatment method capable of reducing the VOC (volatile organic compound) content and odor of polyether polyol. The polyether polyol is prepared from an initiating agent and oxyalkylene through reaction under the effect of an alkali metal catalyst. The method is characterized in that an adsorbent accounting for 1.0 to 1.5 percent of the total mass of coarse polyether polyol is added at 80 to 120 DEG C; after stirring and adsorption, the temperature is lowered to 80 to 90 DEG C; then, water accounting for 8 to 10 percent of the total mass of the coarse polyether polyol is added; next, after secondary stirring, a vacuum system is started; meanwhile, temperature rise is performed for removing water and low-boiling point substances in the coarse polyether polyol; after the moisture is qualified through analysis, filter pressing is performed to obtain a finished product. The potassium-sodium ions are enabled to be adsorbed and removed; meanwhile, the odor and the VOC content of the polyether polyol are reduced.

Description

A kind of PPG process for purification for reducing VOC content and smell
Technical field
The present invention relates to a kind of refined side for reducing VOC (VOC) content and smell in PPG Method.
Background technology
PPG is the important source material of polyurethane material, and polyurethane material has be widely used in the automotive industry. Because people are increasingly paid close attention to environment protection health, it is desirable to which vapour in-car smell is low, automobile polyurethane material prepared by common polyether There is certain smell, be after testing the smell of mainly some aldehyde materials.This is because the synthesis of PPG is adopted substantially It is initiator with small molecule polyol or amine, is catalyzed expoxy propane using base metal catalysts or epoxyethane ring-expansion polymerization is formed Macromolecule polyalcohol, containing the presence of catalyst metal ion, unreacted monomer and oligomer in the PPG after polymerization, So these impurity need to be removed through process for refining.Process for refining at present using it is most be by acid adding and rear using absorption Agent carries out adsorption filtration process.Then can there is the acid of residual in the PPG after neutralization, after high temperature dehydration Smell can be produced, and the side reaction produced in polymerization process easily generates some aldehyde materials, is commonly refining It is difficult to remove these impurity in journey, affects the VOC content of polyethers.
The A of Chinese patent CN 101775132 describe it is a kind of do not need acid adding process for refining, at 60-120 DEG C, use Account for the water of the 0.1-10% of thick ethoxylated polyhydric alcohol gross mass and using two kinds of adsorbents, carry out 2-3 absorption, be filtrated to get low smell PPG.The adsorbent for wherein using is magnesium silicate and diatomite.But its absorption number of times is excessive, and cost is bigger than normal.
Some producers purify PPG with falling film evaporator, however it is necessary that apparatus expensive, and can not go completely Except the polyethers smell for existing.
The content of the invention
It is an object of the present invention to provide a kind of process for purification of the PPG of low VOC, the PPG is in alkali Under metallic catalyst effect, it is obtained by initiator and oxyalkylene reaction, it is characterized by, first add in crude polyoxyalkylene polyol and account for Stirring is opened after the self-control adsorbent of crude polyoxyalkylene polyol gross mass 0.5-2%, after being warmed up to predetermined temperature, is stirred 1 hour, drop Temperature adds the water of thick polyethers gross mass 0.5-15% to after predetermined temperature, is stirred for 1 hour, opens vacuum system and simultaneously Heat up and remove moisture and low-boiling-point substance in crude polyoxyalkylene polyol, the qualified rear press filtration of analysis moisture obtains finished product.
Optimal technical scheme of the present invention is as follows：
One kind reduces the PPG process for purification of VOC (VOC) content and smell, it include as Lower step：
Step 1, adsorbent is added in refined PPG is treated, described adsorbent is that magnesium silicate is mixed with alumina silicate Compound, wherein magnesium silicate account for the 35-45% of adsorbent gross mass, and the amount that described adsorbent is added is to treat refined polyether polyols The 1.0-1.5% of alcohol quality；
Step 2, after refined PPG adds adsorbent predetermined temperature is warming up to for 95-115 DEG C, stirring 1 is little When；
Step 3,80-90 DEG C of predetermined temperature is cooled to, adds water, the addition of water is to treat refined PPG quality 8-10%, and stir 1 hour in this temperature；
Step 4, intensification and vacuum dehydration, dehydration temperaturre is 105-120 DEG C, vacuum≤- 0.09MPa.Moisture after dehydration ≤ 0.1% is required, the PPG of low volatile organic compound content is obtained final product after press filtration.
Above-mentioned process for purification, described treats that refined polyether polyols alcohol functionalities are 1-6, and oxyalkylene is expoxy propane Or oxirane or both mixture, PPG number-average molecular weight is 100-12000.
The method of the present invention not only can effectively remove the kalium ion and natrium ion in PPG, and can effectively reduce gathering The VOC content and smell of ethoxylated polyhydric alcohol.Can be applied to have the poly- ammonia of automobile being relatively strict with to polyethers smell and VOC content Ester material.
Specific embodiment
The present invention is illustrated with reference to embodiments, but the present invention is not only limited to these embodiments.
Embodiment 1：
In 1000g crude polyoxyalkylene polyol a addition 2L stainless steel cauldrons (as described below), 10g self-control adsorbent will be added, Open timing stirring 1h after stirring is warming up to 100 ± 5 DEG C.80g distilled water is sucked after being cooled to 80 DEG C, temperature is kept for 80 ± 5 DEG C After stirring 1h, vacuum plant and the dehydration that heats up are opened, filtered after 110 ± 5 DEG C of dehydration 2h of keeping temperature, obtain refined polyethers many First alcohol finished product.
PPG a is initiator by glycerine in embodiment 1, is obtained with reacting ethylene oxide, and molecular weight is 1500, Catalyst KOH consumptions are 0.25%.
It is magnesium silicate and silicic acid aluminium mixture to make adsorbent used in embodiment 1 by oneself, and wherein to account for adsorbent total for magnesium silicate The 38% of quality.
Product performance index prepared by table 1
Test event Low VOC process for refining Acid neutralization process for refining Testing standard
Formaldehyde ug/g 1.2 9.56 Liquid chromatogram
Acetaldehyde ug/g 1.78 11.54 Liquid chromatogram
Methacrylaldehyde ug/g 0.71 7.85 Liquid chromatogram
Moisture/% ≤0.1 ≤0.1 GB12008.6—1989
Potassium, sodium ion/× 10-6 1,0 1,2 GB12008.4—1989
Embodiment 2：
In 1000g crude polyoxyalkylene polyol b addition 2L stainless steel cauldrons (as described below), 12g self-control adsorbent will be added, Open timing stirring 1h after stirring is warming up to 105 ± 5 DEG C.100g distilled water is sucked after being cooled to 90 DEG C, temperature is kept for 90 ± 5 DEG C After stirring 1h, vacuum plant and the dehydration that heats up are opened, filtered after 115 ± 5 DEG C of dehydration 2h of keeping temperature, obtain refined polyethers many First alcohol finished product.
PPG b is initiator by propane diols in embodiment 2, is obtained with propylene oxide reaction, and molecular weight is 3000, Catalyst KOH consumptions are 0.3%.
It is magnesium silicate and silicic acid aluminium mixture to make adsorbent used in embodiment 2 by oneself, and wherein to account for adsorbent total for magnesium silicate The 40% of quality.
Table 2：The product performance index of preparation
Test event Low VOC process for refining Acid neutralization process for refining Testing standard
Formaldehyde ug/g 0.89 12.42 Liquid chromatogram
Acetaldehyde ug/g 1.24 9.54 Liquid chromatogram
Methacrylaldehyde ug/g 0.56 10.24 Liquid chromatogram
Moisture/% ≤0.1 ≤0.1 GB12008.6—1989
Potassium, sodium ion/× 10-6 2,0 2,1 GB12008.4—1989
Embodiment 3：
In 1000g crude polyoxyalkylene polyol c addition 2L stainless steel cauldrons (as described below), 15g self-control adsorbent will be added, Open timing stirring 1h after stirring is warming up to 110 ± 5 DEG C.100g distilled water is sucked after being cooled to 90 DEG C, temperature is kept for 90 ± 5 DEG C After stirring 1h, vacuum plant and the dehydration that heats up are opened, filtered after 115 ± 5 DEG C of dehydration 2h of keeping temperature, obtain refined polyethers many First alcohol finished product.
PPG c is initiator by glycerine and pentaerythrite in embodiment 3, and average functionality is 3.5, with epoxy The reaction of propane ethylene oxide mixture is obtained, and its ethylene oxide accounts for the 15% of ethylene oxide propylene oxide gross mass, molecular weight For 3000, catalyst KOH consumptions are 0.3%.
It is magnesium silicate and silicic acid aluminium mixture to make adsorbent used in embodiment 3 by oneself, and wherein to account for adsorbent total for magnesium silicate The 43% of quality.
Table 3：The product performance index of preparation
Test event Low VOC process for refining Acid neutralization process for refining Testing standard
Formaldehyde ug/g 1.59 21.54 Liquid chromatogram
Acetaldehyde ug/g 1.03 18.64 Liquid chromatogram
Methacrylaldehyde ug/g 0.86 13.24 Liquid chromatogram
Moisture/% ≤0.1 ≤0.1 GB12008.6—1989
Potassium, sodium ion/× 10-6 0,0 3,2 GB12008.4—1989
Formaldehyde, acetaldehyde relatively in conventional acid neutralisation treatment PPG, level of acrolein find that the present invention can have The kalium ion and natrium ion removed in PPG of effect, while the formaldehyde in PPG, acetaldehyde, methacrylaldehyde can be substantially reduced Content, and these aldehyde materials are the roots for producing polyethers smell, therefore the present invention can substantially reduce PPG VOC content and smell.

Claims (3)

1. a kind of process for purification for reducing VOC (VOC) content and smell in PPG, is characterized in that It comprises the steps：
Step 1, in refined PPG is treated adsorbent, described adsorbent is added to mix with alumina silicate for magnesium silicate Thing, wherein magnesium silicate account for the 35-45% of adsorbent gross mass, and the amount that described adsorbent is added is to treat refined PPG The 1.0-1.5% of quality；
Step 2, after refined PPG adds adsorbent predetermined temperature is warming up to for 95-115 DEG C, stir 1 hour；
Step 3,80-90 DEG C of predetermined temperature is cooled to, adds water, the addition of water is the 8- of the PPG quality for treating refined 10%, and stir 1 hour in this temperature；
Step 4, intensification and vacuum dehydration, dehydration temperaturre is 105-120 DEG C, and moisture requirement≤0.1% after dehydration is obtained final product after press filtration The PPG of low volatile organic compound content.
2. process for purification according to claim 1, is characterized in that：The vacuum of the vacuum dehydration described in step 4≤- 0.09Mpa。
3. process for purification according to claim 1 and 2, is characterized in that：Described treats refined polyether polyols alcohol functionalities For 1-6, oxyalkylene is expoxy propane or oxirane or both mixture, and PPG number-average molecular weight is 100- 12000。
CN201611169822.8A 2016-12-16 2016-12-16 A kind of polyether polyol refining methd reducing VOC content and smell Active CN106589345B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611169822.8A CN106589345B (en) 2016-12-16 2016-12-16 A kind of polyether polyol refining methd reducing VOC content and smell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611169822.8A CN106589345B (en) 2016-12-16 2016-12-16 A kind of polyether polyol refining methd reducing VOC content and smell

Publications (2)

Publication Number Publication Date
CN106589345A true CN106589345A (en) 2017-04-26
CN106589345B CN106589345B (en) 2019-02-01

Family

ID=58600908

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611169822.8A Active CN106589345B (en) 2016-12-16 2016-12-16 A kind of polyether polyol refining methd reducing VOC content and smell

Country Status (1)

Country Link
CN (1) CN106589345B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106832249A (en) * 2017-02-06 2017-06-13 山东诺威新材料有限公司 The process for purification of low smell polyether polyol with high activity
CN107586383A (en) * 2017-10-20 2018-01-16 江苏钟山化工有限公司 The process for purification of VOC content and smell in a kind of reduction PPG
CN108311097A (en) * 2018-02-06 2018-07-24 四川润和催化新材料股份有限公司 A kind of thick ether treating adsorbent and preparation method thereof and the thick ether process for purification based on the adsorbent
CN109456457A (en) * 2018-11-19 2019-03-12 江苏钟山化工有限公司 It is used to prepare the sponge material and preparation method thereof of color inhibition cotton pads
CN111318311A (en) * 2020-04-22 2020-06-23 上海多纶化工有限公司 Cocatalyst, catalyst and application thereof
CN111763309A (en) * 2020-07-22 2020-10-13 万华化学（烟台）容威聚氨酯有限公司 Refining method for reducing aldehyde content and odor in polyether polyol
CN112876666A (en) * 2021-01-14 2021-06-01 长华化学科技股份有限公司 Low-aldehyde and low-odor polyether polyol and preparation method and application thereof
CN113214053A (en) * 2021-05-20 2021-08-06 上海多纶化工有限公司 Refining method of fatty alcohol polyoxyalkylene ether
CN113439096A (en) * 2019-02-07 2021-09-24 陶氏环球技术有限责任公司 Process for preparing copolymer polyols
CN114395107A (en) * 2022-01-21 2022-04-26 江苏斯德瑞克化工有限公司 Environment-friendly low-VOC polyether and production process thereof
CN114602536A (en) * 2020-12-03 2022-06-10 万华化学集团股份有限公司 Preparation method of catalyst and method for reducing VOC content in polyether polyol

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101775132A (en) * 2010-02-03 2010-07-14 山东蓝星东大化工有限责任公司 Method for refining low-odor polyether polyol
CN101962441A (en) * 2010-10-09 2011-02-02 南京理工大学 Purification method of polyether polyol with low degree of unsaturation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101775132A (en) * 2010-02-03 2010-07-14 山东蓝星东大化工有限责任公司 Method for refining low-odor polyether polyol
CN101962441A (en) * 2010-10-09 2011-02-02 南京理工大学 Purification method of polyether polyol with low degree of unsaturation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
徐培林等: "《聚氨酯材料手册》", 31 August 2002, 化学工业出版社 *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106832249A (en) * 2017-02-06 2017-06-13 山东诺威新材料有限公司 The process for purification of low smell polyether polyol with high activity
CN106832249B (en) * 2017-02-06 2019-05-10 山东一诺威新材料有限公司 The refining methd of low smell polyether polyol with high activity
CN107586383A (en) * 2017-10-20 2018-01-16 江苏钟山化工有限公司 The process for purification of VOC content and smell in a kind of reduction PPG
CN108311097A (en) * 2018-02-06 2018-07-24 四川润和催化新材料股份有限公司 A kind of thick ether treating adsorbent and preparation method thereof and the thick ether process for purification based on the adsorbent
CN109456457A (en) * 2018-11-19 2019-03-12 江苏钟山化工有限公司 It is used to prepare the sponge material and preparation method thereof of color inhibition cotton pads
CN113439096A (en) * 2019-02-07 2021-09-24 陶氏环球技术有限责任公司 Process for preparing copolymer polyols
CN111318311A (en) * 2020-04-22 2020-06-23 上海多纶化工有限公司 Cocatalyst, catalyst and application thereof
CN111318311B (en) * 2020-04-22 2022-09-06 上海多纶化工有限公司 Cocatalyst, catalyst and application thereof
CN111763309A (en) * 2020-07-22 2020-10-13 万华化学（烟台）容威聚氨酯有限公司 Refining method for reducing aldehyde content and odor in polyether polyol
CN111763309B (en) * 2020-07-22 2023-01-13 万华化学（烟台）容威聚氨酯有限公司 Refining method for reducing aldehyde content and odor in polyether polyol
CN114602536B (en) * 2020-12-03 2023-07-11 万华化学集团股份有限公司 Preparation method of catalyst and method for reducing VOC content in polyether polyol
CN114602536A (en) * 2020-12-03 2022-06-10 万华化学集团股份有限公司 Preparation method of catalyst and method for reducing VOC content in polyether polyol
CN112876666A (en) * 2021-01-14 2021-06-01 长华化学科技股份有限公司 Low-aldehyde and low-odor polyether polyol and preparation method and application thereof
CN112876666B (en) * 2021-01-14 2023-04-14 长华化学科技股份有限公司 Low-aldehyde and low-odor polyether polyol and preparation method and application thereof
CN113214053A (en) * 2021-05-20 2021-08-06 上海多纶化工有限公司 Refining method of fatty alcohol polyoxyalkylene ether
CN113214053B (en) * 2021-05-20 2022-08-05 上海多纶化工有限公司 Method for refining fatty alcohol polyoxyalkylene ether
CN114395107A (en) * 2022-01-21 2022-04-26 江苏斯德瑞克化工有限公司 Environment-friendly low-VOC polyether and production process thereof

Also Published As

Publication number Publication date
CN106589345B (en) 2019-02-01

Similar Documents

Publication Publication Date Title
CN106589345A (en) Polyether polyol refining method capable of reducing VOC (volatile organic compound) content and odor
CN106832249B (en) The refining methd of low smell polyether polyol with high activity
JP6058265B2 (en) Method for producing polyethers
US20190106369A1 (en) Processing Base-Catalysed Alkoxylation Products
WO2008026657A1 (en) Method of purifying polyether compound
CN105814113B (en) The method for post-processing alkaline polyether polyols
CN100390129C (en) Bio-based polyhydric alcohol prepared by using rape seed oil
DE202009019002U1 (en) New alkoxysilyl-bearing polyether alcohols
JP2010018799A5 (en)
CN107652426A (en) Reduce the process for purification of VOC content and smell in PPG
JP2017171708A (en) Manufacturing method of polyoxyalkylene polyol
CN101775132A (en) Method for refining low-odor polyether polyol
CN111763309B (en) Refining method for reducing aldehyde content and odor in polyether polyol
EP3249000A1 (en) Method for circularly preparing polyether polyol by using dmc catalyst
DE102007043618A1 (en) Producing alkenyl polyglycerols useful as modifiers for hydrogen-functional dimethylpolysiloxanes and as comonomers comprises ring-opening polymerization of glycidol with an alkenol or alkenyl glycerol
CA3106926A1 (en) Process for producing high-purity hydrosilylation products
CN107586383B (en) Refining method for reducing VOC content and odor in polyether polyol
CN112876666B (en) Low-aldehyde and low-odor polyether polyol and preparation method and application thereof
CN105367779B (en) The process for purification of isomery alcohol polyethers
JP5120682B2 (en) Alkenyl group-containing polyoxyalkylene derivative and method for producing the same
CN110305311B (en) Refining method of allyl alcohol methyl terminated polyether
JP5936244B2 (en) Process for preparing polytrimethylene ether glycol
CN102634006A (en) Polyether amine for textile printing and dyeing auxiliary and preparation method for polyether amine
CN108059717B (en) Refining method and application of low-odor polyether polyol
JPH02276821A (en) Production of polyethers

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP02 Change in the address of a patent holder
CP02 Change in the address of a patent holder

Address after: No.158, Fenghua Road, Jiangbei new district, Nanjing, Jiangsu Province

Patentee after: JIANGSU ZHONGSHAN CHEMICAL Co.,Ltd.

Address before: 210038 No. 46, Xin Xin Road, Qixia District, Jiangsu, Nanjing

Patentee before: JIANGSU ZHONGSHAN CHEMICAL Co.,Ltd.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20220216

Address after: No. 158, Fenghua Road, Jiangbei new area, Nanjing, Jiangsu 210038

Patentee after: Jiangsu Zhongshan new material Co.,Ltd.

Address before: No. 158, Fenghua Road, Jiangbei new area, Nanjing, Jiangsu 210038

Patentee before: JIANGSU ZHONGSHAN CHEMICAL Co.,Ltd.