CN105237761A - Method for preparing polyether polyol for producing polyurethane waterproof material - Google Patents
Method for preparing polyether polyol for producing polyurethane waterproof material Download PDFInfo
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- CN105237761A CN105237761A CN201510782613.XA CN201510782613A CN105237761A CN 105237761 A CN105237761 A CN 105237761A CN 201510782613 A CN201510782613 A CN 201510782613A CN 105237761 A CN105237761 A CN 105237761A
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- waterproof material
- polyurethane waterproof
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- polyether glycol
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- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to the technical field of polyether polyol preparation, and in particular relates to a method for preparing polyether polyol for producing a polyurethane waterproof material. The method comprises the following steps: stirring and dissolving bisphenol A, a basic catalyst and polyhydric alcohol to homogeneous phase, replacing with nitrogen, continuously introducing propylene oxide, aging, neutralizing, dehydrating and finely preparing, thereby obtaining polyether polyol. As bisphenol A, the basic catalyst and polyhydric alcohol are used as an initial system to synthesize polyether polyol, the cost is lowered, the operation is simple, and the operation process can be greatly shortened.
Description
Technical field
The present invention relates to polyether glycol preparing technical field, be specifically related to a kind of preparation method of the polyether glycol for the production of polyurethane waterproof material.
Background technology
Urethane purposes is in daily life more and more extensive, and waterproof is the large application direction of one, and existing market requires more and more higher to urethane water tolerance.But current polyurethane waterproof material cost is higher.
Chinese patent CN104059211A discloses a kind of preparation method of polyether polyurethane waterproof material, comprises the following steps: take tetramethylolmethane 15g, potassium hydroxide 5g, oxyethane 30g, propylene oxide 50g, drop in autoclave and react 1.5 hours; Then drip propylene oxide 60g, oxyethane 500g successively, temperature maintains 120 DEG C, obtains work in-process after 2 hours; Work in-process are put into there-necked flask, drips Glacial acetic acid, control acid number at 0.3-0.5mgKOH/g, then add perlite 1.5g and 0.5g gac, after 2 hours, suction filtration obtains polyethers finished product; Get polyethers finished product 500g, add strong phosphoric acid 10, MDI100g, react 2 hours; Then add crosslinkers 10g, MOCA solidifying agent 100g, stir discharging casting after 40 minutes.It is simple that the present invention has technique, and temperature of reaction is lower, and small product size expands doubly large, the advantage of water-tolerant.
But above-mentioned patent, technical process is long, complex operation, and cost is high.Need the preparation method that a kind of cost is low, flow process is short, the simple to operate polyether glycol for the production of polyurethane waterproof material is provided at present badly.
Summary of the invention
The object of this invention is to provide the preparation method of the polyether glycol for the production of polyurethane waterproof material that a kind of cost is low, flow process is short, simple to operate.
The preparation method of the polyether glycol for the production of polyurethane waterproof material of the present invention, by dihydroxyphenyl propane, basic catalyst and polyvalent alcohol, stirring and dissolving to homogeneous phase, after nitrogen replacement, pass into propylene oxide continuously, through slaking, neutralization, dehydration, refining obtain polyether glycol.
Described polyvalent alcohol is propylene glycol, glycerol or tetramethylolmethane.
Described basic catalyst is potassium hydroxide, sodium hydroxide or sodium bicarbonate.
With weight parts, dihydroxyphenyl propane is 20-80 part, and basic catalyst is 1-8 part, and polyvalent alcohol is 300-1000 part, propylene oxide 1500-2500 part.
Described whipping temp is 75-85 DEG C.
Described temperature when passing into propylene oxide is 100-110 DEG C.
Described curing time 2-3 hour.
Beneficial effect of the present invention is as follows:
The present invention is using dihydroxyphenyl propane, basic catalyst and polyvalent alcohol as initial system synthesizing polyether glycol, and not only cost is low, simple to operate, and operating process shortens greatly.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1
1, raw material is selected: propylene glycol 550g, dihydroxyphenyl propane 40g, KOH2.5g, propylene oxide 1600g.
2, preparation technology: propylene glycol, KOH and dihydroxyphenyl propane are dropped at 80 DEG C in 5L reactor that stirring and dissolving is to homogeneous phase, nitrogen replacement, passes into propylene oxide continuously at 100 DEG C, slaking 3 hours, neutralization, dehydration, surveys moisture when being less than 0.05%, refiningly to obtain finished product.
3, the performance perameter of the polyether glycol that test is obtained: OHV:435.5, viscosity: 2190, pH:6.56, moisture: 0.015%.
Embodiment 2
1, raw material is selected: glycerol 600g, dihydroxyphenyl propane 50g, NaOH3g, propylene oxide 2100g.
2, preparation technology: glycerol, NaOH and dihydroxyphenyl propane are dropped at 80 DEG C in 5L reactor that stirring and dissolving is to homogeneous phase, nitrogen replacement, passes into propylene oxide continuously at 105 DEG C, slaking 3 hours, neutralization, dehydration, surveys moisture when being less than 0.05%, refiningly to obtain finished product.
3, the performance perameter of the polyether glycol that test is obtained: OHV:477.1, viscosity: 2300, pH:6.16, moisture: 0.024%.
Embodiment 3
1, raw material is selected: tetramethylolmethane 700g, dihydroxyphenyl propane 60g, sodium bicarbonate 4g, propylene oxide 2200g.
2, preparation technology: tetramethylolmethane, sodium bicarbonate and dihydroxyphenyl propane are dropped at 80 DEG C in 5L reactor that stirring and dissolving is to homogeneous phase, nitrogen replacement, passes into propylene oxide continuously at 110 DEG C, slaking 3 hours, neutralization, dehydration, when survey moisture is less than 0.05%, refines and to obtain finished product.
3, the performance perameter of the polyether glycol that test is obtained: OHV:469.8, viscosity: 2500, pH:6.22, moisture: 0.044%.
Claims (7)
1. the preparation method for the production of the polyether glycol of polyurethane waterproof material, it is characterized in that: by dihydroxyphenyl propane, basic catalyst and polyvalent alcohol, stirring and dissolving to homogeneous phase, after nitrogen replacement, pass into propylene oxide continuously, through slaking, neutralization, dehydration, refining obtain polyether glycol.
2. the preparation method of the polyether glycol for the production of polyurethane waterproof material according to claim 1, is characterized in that: polyvalent alcohol is propylene glycol, glycerol or tetramethylolmethane.
3. the preparation method of the polyether glycol for the production of polyurethane waterproof material according to claim 1, is characterized in that: basic catalyst is potassium hydroxide, sodium hydroxide or sodium bicarbonate.
4. the preparation method of the polyether glycol for the production of polyurethane waterproof material according to claim 1,2 or 3, it is characterized in that: with weight parts, dihydroxyphenyl propane is 20-80 part, and basic catalyst is 1-8 part, polyvalent alcohol is 300-1000 part, propylene oxide 1500-2500 part.
5. the preparation method of the polyether glycol for the production of polyurethane waterproof material according to claim 4, is characterized in that: whipping temp is 75-85 DEG C.
6. the preparation method of the polyether glycol for the production of polyurethane waterproof material according to claim 5, is characterized in that: temperature when passing into propylene oxide is 100-110 DEG C.
7. the preparation method of the polyether glycol for the production of polyurethane waterproof material according to claim 6, is characterized in that: curing time 2-3 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510782613.XA CN105237761A (en) | 2015-11-13 | 2015-11-13 | Method for preparing polyether polyol for producing polyurethane waterproof material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510782613.XA CN105237761A (en) | 2015-11-13 | 2015-11-13 | Method for preparing polyether polyol for producing polyurethane waterproof material |
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| CN105237761A true CN105237761A (en) | 2016-01-13 |
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| CN201510782613.XA Pending CN105237761A (en) | 2015-11-13 | 2015-11-13 | Method for preparing polyether polyol for producing polyurethane waterproof material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109337062A (en) * | 2018-09-30 | 2019-02-15 | 山东诺威新材料有限公司 | The preparation method of low-density high-mechanic sponge polyether polyol |
| CN113105616A (en) * | 2021-04-12 | 2021-07-13 | 山东蓝星东大有限公司 | Preparation method of hydrophobic polyether polyol |
| CN113105617A (en) * | 2021-04-12 | 2021-07-13 | 山东蓝星东大有限公司 | Preparation method of polyether polyol for high-performance waterproof coating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391592A (en) * | 1999-11-22 | 2003-01-15 | 拜尔公司 | Method for producing polyether polyols |
| CN1618835A (en) * | 2003-11-21 | 2005-05-25 | 西安石油大学 | Preparation method of high efficiency broad spectrum deemulsifier |
| CN104072745A (en) * | 2014-07-04 | 2014-10-01 | 山东一诺威新材料有限公司 | Method for preparing polyether polyol for aromatic coating |
| CN104262610A (en) * | 2014-10-11 | 2015-01-07 | 淄博德信联邦化学工业有限公司 | Preparation method of flame-retardant polyether glycol |
-
2015
- 2015-11-13 CN CN201510782613.XA patent/CN105237761A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391592A (en) * | 1999-11-22 | 2003-01-15 | 拜尔公司 | Method for producing polyether polyols |
| CN1618835A (en) * | 2003-11-21 | 2005-05-25 | 西安石油大学 | Preparation method of high efficiency broad spectrum deemulsifier |
| CN104072745A (en) * | 2014-07-04 | 2014-10-01 | 山东一诺威新材料有限公司 | Method for preparing polyether polyol for aromatic coating |
| CN104262610A (en) * | 2014-10-11 | 2015-01-07 | 淄博德信联邦化学工业有限公司 | Preparation method of flame-retardant polyether glycol |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109337062A (en) * | 2018-09-30 | 2019-02-15 | 山东诺威新材料有限公司 | The preparation method of low-density high-mechanic sponge polyether polyol |
| CN109337062B (en) * | 2018-09-30 | 2021-06-18 | 山东一诺威新材料有限公司 | Preparation method of polyether polyol for low-density high-bearing sponge |
| CN113105616A (en) * | 2021-04-12 | 2021-07-13 | 山东蓝星东大有限公司 | Preparation method of hydrophobic polyether polyol |
| CN113105617A (en) * | 2021-04-12 | 2021-07-13 | 山东蓝星东大有限公司 | Preparation method of polyether polyol for high-performance waterproof coating |
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Application publication date: 20160113 |
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