CN102702505A - High-temperature-resistant polyether polyol and preparation method thereof - Google Patents
High-temperature-resistant polyether polyol and preparation method thereof Download PDFInfo
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- CN102702505A CN102702505A CN2012102148555A CN201210214855A CN102702505A CN 102702505 A CN102702505 A CN 102702505A CN 2012102148555 A CN2012102148555 A CN 2012102148555A CN 201210214855 A CN201210214855 A CN 201210214855A CN 102702505 A CN102702505 A CN 102702505A
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Abstract
The invention belongs to the field of chemical synthesis, and particularly relates to high-temperature-resistant polyether polyol and a preparation method thereof. The high-temperature-resistant polyether polyol is characterized by being prepared from the following components in parts by weight: 600-1,000 parts of sorbierite, 300-600 parts of cane sugar, 3,300-3,800 parts of epoxy propane, 10-18 parts of potassium hydroxide, 20-36 parts of phosphoric acid and 140-200 parts of water. The method has the advantages: the prepared high-temperature-resistant polyether polyol is catalyzed by using potassium hydroxide; sorbierite is an ideal starting agent for preparing temperature-resistant polyether; and the polyether polyol synthesized by adopting sorbierite and cane sugar with high functionality has high functionality and low hydroxyl value. Hard urethane foam plastic prepared from polyether polyol has high heat resistance, high size stability, thermal oxidation resistance, oil resistance, bonding property and high size stability.
Description
Technical field
The invention belongs to the field of chemical synthesis, be specifically related to a kind of high temperature resistant polyether glycol and preparation method thereof.
Background technology
Rigid urethane foam has some superperformances, and is little like density, thermal conductivity is low, intensity good, strong etc. with other material cohesiveness, is the good heat-insulation material that is easy to moulding, easy construction.But the rigid foam of common polyethers production only is applicable to the occasion below 100 ℃, uses like the long term high temperature environment, and its performance significantly reduces.Be applied to special dimension such as aspects such as the insulation of heating power line of pipes, the high-temperature sterilization anti-comparatively high temps of goods that need hard bubble, 150 ℃ of general requirement heatproofs.
Summary of the invention
The purpose of this invention is to provide a kind of high temperature resistant polyether glycol and preparation method thereof; Adopt the high temperature resistant polyether glycol synthetic rigid urethane foam can anti-high temperature more than 150 ℃; And have higher physical strength and dimensional stability, expand the use field of rigid urethane foam.
A kind of high temperature resistant polyether glycol of the present invention; According to the parts by weight meter, form: 20 ~ 36 parts of 600 ~ 1000 parts of sorbyl alcohols, 300 ~ 600 parts of sucrose, 3300 ~ 3800 parts of propylene oxide, 10 ~ 18 parts in Pottasium Hydroxide, phosphoric acid and 140 ~ 200 parts in water by following preparation of raw material.
Wherein, the mass concentration of sorbyl alcohol is preferably 70%
The preparation method of high temperature resistant polyether glycol of the present invention may further comprise the steps:
(1) vacuum sucks sorbyl alcohol, sucrose, Pottasium Hydroxide in polymeric kettle, and nitrogen replacement three times is warming up to 70 ℃ and adds 30% of propylene oxide total amount, 85 ~ 90 ℃ of temperature of reaction controls, pressure≤0.3mpa;
(2) slaking is 3 hours, the dehydration that heats up after the slaking, controlled temperature≤105 ℃;
(3) when dewatering to moisture≤0.3%, promptly moisture is qualified, adds the propylene oxide of surplus then, 105 ~ 113 ℃ of controlled temperature, pressure≤0.25mpa, slaking 3 hours;
(4) be cooled to 85 ℃ after the slaking, suck phosphoric acid and water and neutralize, dehydrate after the neutralization and promptly get high temperature resistant polyether glycol.
The invention has the advantages that: the high temperature resistant polyether glycol for preparing is by potassium hydroxide catalysed; Sorbyl alcohol is a desirable initiator of making the heatproof polyethers; Adopt higher sorbyl alcohol, the sucrose synthetic polyether glycol of functionality, have higher functionality and lower hydroxyl value.The rigid urethane foam that this polyether glycol is made has good thermotolerance, dimensional stability, heatproof oxidation performance, oil-proofness, cohesiveness and dimensional stability preferably.
Embodiment
Below in conjunction with embodiment the present invention is described further.
Embodiment 1:
Prepare high temperature resistant polyether glycol according to following steps:
(1) according to the parts by weight meter; 890 parts of mass concentrations of vacuum suction are 70% sorbyl alcohol, 460 portions of sucrose, 15 parts of Pottasium Hydroxide in polymeric kettle, and nitrogen replacement three times is warming up to 70 ℃ and adds 1044 parts of propylene oxide; 85 ℃ of temperature of reaction controls, pressure≤0.3mpa;
(2) slaking is 3 hours, the dehydration that heats up after the slaking, controlled temperature≤105 ℃;
(3) when dewatering to moisture≤0.3%, promptly moisture is qualified, adds 2436 parts of propylene oxide then, 105 ℃ of controlled temperature, pressure≤0.25mpa, slaking 3 hours;
(4) be cooled to 85 ℃ after the slaking, suck 28 parts of phosphoric acid and 140 parts of water and neutralize, dehydrate after the neutralization and promptly get high temperature resistant polyether glycol.
Product performance: the PU of system is high temperature resistant 160-180 degree, ultimate compression strength is high, dimensional stabilizing.
Product index: hydroxyl value 390 ± 20mgkoh/g viscosity 6000 ± 2000 moisture 0.1 potassium ion≤50PH:5-7
Embodiment 2:
Prepare high temperature resistant polyether glycol according to following steps:
(1) according to the parts by weight meter; 900 parts of mass concentrations of vacuum suction are 70% sorbyl alcohol, 500 portions of sucrose, 16 parts of Pottasium Hydroxide in polymeric kettle, and nitrogen replacement three times is warming up to 70 ℃ and adds 1080 parts of propylene oxide; 87 ℃ of temperature of reaction controls, pressure≤0.3mpa;
(2) slaking is 3 hours, the dehydration that heats up after the slaking, controlled temperature≤105 ℃;
(3) when dewatering to moisture≤0.3%, promptly moisture is qualified, adds 2520 parts of propylene oxide then, 110 ℃ of controlled temperature, pressure≤0.25mpa, slaking 3 hours;
(4) be cooled to 85 ℃ after the slaking, suck 30.5 parts of phosphoric acid and 180 parts of water and neutralize, dehydrate after the neutralization and promptly get high temperature resistant polyether glycol.
Product performance: the PU of system is high temperature resistant 160-180 degree, ultimate compression strength is high, dimensional stabilizing.
Product index: hydroxyl value 380 ± 20mgkoh/g viscosity 6000 ± 2000 moisture 0.1 potassium ion≤50PH:5-7
Embodiment 3:
Prepare high temperature resistant polyether glycol according to following steps:
(1) according to the parts by weight meter; 910 parts of mass concentrations of vacuum suction are 70% sorbyl alcohol, 450 portions of sucrose, 13 parts of Pottasium Hydroxide in polymeric kettle, and nitrogen replacement three times is warming up to 70 ℃ and adds 1077 parts of propylene oxide; 90 ℃ of temperature of reaction controls, pressure≤0.3mpa;
(2) slaking is 3 hours, the dehydration that heats up after the slaking, controlled temperature≤105 ℃;
(3) when dewatering to moisture≤0.3%, promptly moisture is qualified, adds 2513 parts of propylene oxide then, 113 ℃ of controlled temperature, pressure≤0.25mpa, slaking 3 hours;
(4) be cooled to 85 ℃ after the slaking, suck 25.1 parts of phosphoric acid and 200 parts of water and neutralize, dehydrate after the neutralization and promptly get high temperature resistant polyether glycol.
Product performance: the PU of system is high temperature resistant 160-180 degree, ultimate compression strength is high, dimensional stabilizing.
Product index: hydroxyl value 400 ± 20mgkoh/g viscosity 6000 ± 2000 moisture 0.1 potassium ion≤50PH:5-7.
Claims (3)
1. high temperature resistant polyether glycol; It is characterized in that forming by following preparation of raw material: 20 ~ 36 parts of 600 ~ 1000 parts of sorbyl alcohols, 300 ~ 600 parts of sucrose, 3300 ~ 3800 parts of propylene oxide, 10 ~ 18 parts in Pottasium Hydroxide, phosphoric acid and 140 ~ 200 parts in water according to the parts by weight meter.
2. high temperature resistant polyether glycol according to claim 1, the mass concentration that it is characterized in that sorbyl alcohol is 70%.
3. the preparation method of the described high temperature resistant polyether glycol of claim 1 is characterized in that may further comprise the steps:
(1) vacuum sucks sorbyl alcohol, sucrose, Pottasium Hydroxide in polymeric kettle, and nitrogen replacement three times is warming up to 70 ℃ and adds 30% of propylene oxide total amount, 85 ~ 90 ℃ of temperature of reaction controls, pressure≤0.3mpa;
(2) slaking is 3 hours, the dehydration that heats up after the slaking, controlled temperature≤105 ℃;
(3) when dewatering to moisture≤0.3%, promptly moisture is qualified, adds the propylene oxide of surplus then, 105 ~ 113 ℃ of controlled temperature, pressure≤0.25mpa, slaking 3 hours;
(4) be cooled to 85 ℃ after the slaking, suck phosphoric acid and water and neutralize, dehydrate after the neutralization and promptly get high temperature resistant polyether glycol.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102148555A CN102702505A (en) | 2012-06-27 | 2012-06-27 | High-temperature-resistant polyether polyol and preparation method thereof |
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| CN2012102148555A CN102702505A (en) | 2012-06-27 | 2012-06-27 | High-temperature-resistant polyether polyol and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104072748A (en) * | 2014-07-04 | 2014-10-01 | 山东一诺威新材料有限公司 | Preparation method for full saccharose polyether polyol |
| CN104231258A (en) * | 2014-10-11 | 2014-12-24 | 淄博德信联邦化学工业有限公司 | Polyether defoaming agent and preparation method thereof |
| CN104448291A (en) * | 2014-12-09 | 2015-03-25 | 淄博德信联邦化学工业有限公司 | Polyester cross-linking agent and preparation method thereof |
| CN105330831A (en) * | 2015-10-26 | 2016-02-17 | 江苏钟山化工有限公司 | Polyether polyol used for polyurethane single-component grouting materials and preparation method and application thereof |
| CN105820327A (en) * | 2016-05-24 | 2016-08-03 | 无锡市长安曙光手套厂 | Polyether polyol resistant to high temperature and corrosion and preparation method thereof |
| CN106146823A (en) * | 2016-07-30 | 2016-11-23 | 淄博德信联邦化学工业有限公司 | The preparation method of pure crystalline sorbitol polyether polyol |
| CN106336503A (en) * | 2016-08-25 | 2017-01-18 | 周荣 | Biocompatible hyper-dispersant preparation method |
| CN112708125A (en) * | 2019-10-25 | 2021-04-27 | 中国石油化工股份有限公司 | Preparation method of sorbitol-based polyether polyol |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001172355A (en) * | 1999-12-20 | 2001-06-26 | Mitsui Chemicals Inc | Polyester polyol for hard polyurethane foam, its manufacturing method and method for manufacturing hard polyurethane foam |
| CN1660918A (en) * | 2005-01-31 | 2005-08-31 | 锦化化工（集团）有限责任公司 | Method for preparing polyether glycol in use fire resistant hard foam of polyurethane |
-
2012
- 2012-06-27 CN CN2012102148555A patent/CN102702505A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001172355A (en) * | 1999-12-20 | 2001-06-26 | Mitsui Chemicals Inc | Polyester polyol for hard polyurethane foam, its manufacturing method and method for manufacturing hard polyurethane foam |
| CN1660918A (en) * | 2005-01-31 | 2005-08-31 | 锦化化工（集团）有限责任公司 | Method for preparing polyether glycol in use fire resistant hard foam of polyurethane |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104072748A (en) * | 2014-07-04 | 2014-10-01 | 山东一诺威新材料有限公司 | Preparation method for full saccharose polyether polyol |
| CN104231258A (en) * | 2014-10-11 | 2014-12-24 | 淄博德信联邦化学工业有限公司 | Polyether defoaming agent and preparation method thereof |
| CN104448291A (en) * | 2014-12-09 | 2015-03-25 | 淄博德信联邦化学工业有限公司 | Polyester cross-linking agent and preparation method thereof |
| CN105330831A (en) * | 2015-10-26 | 2016-02-17 | 江苏钟山化工有限公司 | Polyether polyol used for polyurethane single-component grouting materials and preparation method and application thereof |
| CN105820327A (en) * | 2016-05-24 | 2016-08-03 | 无锡市长安曙光手套厂 | Polyether polyol resistant to high temperature and corrosion and preparation method thereof |
| CN106146823A (en) * | 2016-07-30 | 2016-11-23 | 淄博德信联邦化学工业有限公司 | The preparation method of pure crystalline sorbitol polyether polyol |
| CN106336503A (en) * | 2016-08-25 | 2017-01-18 | 周荣 | Biocompatible hyper-dispersant preparation method |
| CN112708125A (en) * | 2019-10-25 | 2021-04-27 | 中国石油化工股份有限公司 | Preparation method of sorbitol-based polyether polyol |
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Application publication date: 20121003 |