CN1058025A - Low fluorine (Lyons) foamed polyether polyhydric alcohol synthesis technique - Google Patents
Low fluorine (Lyons) foamed polyether polyhydric alcohol synthesis technique Download PDFInfo
- Publication number
- CN1058025A CN1058025A CN 91103585 CN91103585A CN1058025A CN 1058025 A CN1058025 A CN 1058025A CN 91103585 CN91103585 CN 91103585 CN 91103585 A CN91103585 A CN 91103585A CN 1058025 A CN1058025 A CN 1058025A
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- CN
- China
- Prior art keywords
- polyhydric alcohol
- low fluorine
- polyether polyhydric
- foamed polyether
- tensio
- 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.)
- Pending
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- Polyethers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
With polyols such as alkyl glucose glucoside and glycerine is initiator, and tensio-active agent is a properties-correcting agent, produces low fluorine foamed polyether polyhydric alcohol, CFC-11 (CCl
3F) reduce 50%, the polyurethane foam performance with do not reduce CFC-11 quite, foaming properties and processing performance all can satisfy the needs that refrigerator is produced, it is a kind of excellent performance, economize the polyether glycol of CFC-11 again, popularizing application prospect is wide, and favorable economic benefit and significant environmental benefit are arranged.
Description
The invention belongs to chemical technology field
Low fluorine foamed polyether polyhydric alcohol is a not product innovation of the eighties.In January, 1990, Britain ICI and West Germany BASF begin to sell product.It is said by 3-5 kind polyethers to mix, do not find the patent report of relevant this class polyethers so far.
The polyether glycol of our development is to adopt novel initiator-alkyl glucose glucoside.It is reported that the European market do not have this series products, so the low fluorine foamed polyether that we produce is different with theirs.
The polyether glycol for low fluorine foaming of Liming chemical Inst of China the Ministry of Chemical Industry development is also different with ours.
Shenyang petrochemical complex design and research institute once also once used methylglucoside and propylene oxide synthesizing polyether glycol with the direct synthesizing methyl glycoside of starch, methyl alcohol and propylene oxide polyether glycol, but the prescription and the Technology that are limited to them, the polyether glycol that is generated can not be used for low fluorine foaming.
The difference of we and Shenyang petrochemical complex design and research institute is, we adopt special formula and process control technology, and carry out modification with tensio-active agent, and institute's synthetic polyethers has low fluorine foam performance, CFC-11 reduces 50%, foaming properties with do not reduce CFC-11 quite.
The object of the invention: in order to reduce the CFC-11 consumption of polyurethane foam, reduce the destruction of CFC-11, the protection environment for human survival to atmospheric ozone layer; With the low fluorine foamed polyether import substitution polyethers of home-made, save foreign exchange; And refrigerator can be exported to countries in the world, obtain favorable economic benefit and remarkable social benefit.
Be to be total to initiator with methylglucoside and glycerine now, tensio-active agent is an example as properties-correcting agent, and it is as follows to introduce low fluorine foaming ethoxylated polyhydric alcohol synthesis technique:
One, main raw material
Methylglucoside, glycerine, tensio-active agent, propylene oxide, potassium hydroxide, H
2O
2, oxalic acid.
Two, product quality indicator
The light yellow transparent liquid of outward appearance
Hydroxyl value mgKOH/g 300-500
25 ℃ of 2000-1 of pol centipoise, 0000
Acid number mgKOH/g≤0.2
Moisture content %≤0.1
Be made into the special-purpose low fluorine foaming combined polyether of refrigerator:
The CFC-11 consumption reduces more than 50%
Unit weight Kg/m
3The 32-35(foam box)
Compressive strength MPa 〉=0.12
Thermal conductivity W/MK 0.018-0.020
Water-intake rate Kg/m
2＜0.20
Rate of closed hole % 90-95
Dimensional stability %＜0.5(-30 ℃, 48h, linear change rate)
Three, technological process
1. reinforced: as glycerine, methylglucoside, propylene oxide, tensio-active agent, potassium hydroxide to be added in the polymeric kettle by a certain percentage, and begin to heat up;
2. polymerization: temperature 80-150 ℃, pressure 3-10Kg/cm
2
Reaction times 4-8 hour
Chuck and inner coil water flowing cooling, control reaction temperature.
3. neutralization: reaction mass is squeezed into the aftertreatment still, when temperature of charge drops to 70-80 ℃, add in the equivalent oxalic acid and potassium hydroxide, start stirring, react and got final product in 30 minutes.
4. decolouring: use H
2O
2Or activated carbon decolorizing, stirred 30-50 minute.
5. dewater and low-boiling-point substance: at 80-130 ℃, under the 740mmHg post vacuum tightness, handled 1-4 hour, till no obvious overhead product.
6. filter: by pressure filter, filtrate is product with material, the barrelling warehouse-in.
In addition, with starch, methyl alcohol elder generation synthesizing methyl glycoside, purify without separating, with surfactant-modified, direct and propylene oxide reaction also can be made into low fluorine foamed polyether polyhydric alcohol, technological process and noted earlier basic identical.
The advantage that the present invention is compared with prior art had:
The polyethers made from the present invention can be used for low fluorine foaming, reduces CFC-11 more than 50%, reduces the destruction to atmospheric ozone layer, and the protection existent environment of people has significant environmental benefit.
Claims (4)
1, be initiator with the alkyl glucose glucoside, tensio-active agent is a properties-correcting agent, the low fluorine foamed polyether polyhydric alcohol of making, and wherein alkyl is methyl, ethyl, propyl group, allyl group, butyl ... the alkylate that hexadecyl etc. are all.
2, be to be total to initiator with polyols such as alkyl glucose glucoside and glycerine, tensio-active agent is a properties-correcting agent, the low fluorine foamed polyether polyhydric alcohol of making, wherein the alkyl scope is with 1, and polyol is glycerine, N.F,USP MANNITOL, sorbyl alcohol, sucrose, xylitol, tetramethylolmethane, hexanetriol, TriMethylolPropane(TMP), propylene glycol, ethylene glycol, glycol ether etc.
3, with the direct low fluorine foamed polyether polyhydric alcohol of synthetic of starch, methyl alcohol (or ethanol, propylene glycol, ethylene glycol, glycol ether, glycerine etc.), tensio-active agent and propylene oxide (or oxyethane).
4, be initiator with the alkyl glucose glucoside, the low fluorine foamed polyether polyhydric alcohol of making.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91103585 CN1058025A (en) | 1991-06-03 | 1991-06-03 | Low fluorine (Lyons) foamed polyether polyhydric alcohol synthesis technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91103585 CN1058025A (en) | 1991-06-03 | 1991-06-03 | Low fluorine (Lyons) foamed polyether polyhydric alcohol synthesis technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1058025A true CN1058025A (en) | 1992-01-22 |
Family
ID=4906159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91103585 Pending CN1058025A (en) | 1991-06-03 | 1991-06-03 | Low fluorine (Lyons) foamed polyether polyhydric alcohol synthesis technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1058025A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293113C (en) * | 2005-05-25 | 2007-01-03 | 李文祥 | Method for preparing polyether glycol in use for hard bubble of polyurethane in non-freon foaming system |
| CN1293121C (en) * | 2004-12-30 | 2007-01-03 | 锦化化工（集团）有限责任公司 | Polyether polyatomic alcohol preparation for subfluoride hard foamed material |
| CN101161699B (en) * | 2006-10-09 | 2011-09-21 | 李颂兵 | Polyether polyvalent alcohol for preparing no-freon polyurethane hard foam plastic and preparation method thereof |
-
1991
- 1991-06-03 CN CN 91103585 patent/CN1058025A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293121C (en) * | 2004-12-30 | 2007-01-03 | 锦化化工（集团）有限责任公司 | Polyether polyatomic alcohol preparation for subfluoride hard foamed material |
| CN1293113C (en) * | 2005-05-25 | 2007-01-03 | 李文祥 | Method for preparing polyether glycol in use for hard bubble of polyurethane in non-freon foaming system |
| CN101161699B (en) * | 2006-10-09 | 2011-09-21 | 李颂兵 | Polyether polyvalent alcohol for preparing no-freon polyurethane hard foam plastic and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |