CN103396522A - Methylal-type combined polyether - Google Patents
Methylal-type combined polyether Download PDFInfo
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- CN103396522A CN103396522A CN2013102885560A CN201310288556A CN103396522A CN 103396522 A CN103396522 A CN 103396522A CN 2013102885560 A CN2013102885560 A CN 2013102885560A CN 201310288556 A CN201310288556 A CN 201310288556A CN 103396522 A CN103396522 A CN 103396522A
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Abstract
The invention discloses a methylal-type combined polyether. The methylal-type combined polyether comprises the following constituents in parts by weight: 20-60 parts of polyether polyol A, 10-40 parts of polyether polyol B, 10-40 parts of polyether polyol C, 0-30 parts of polyether polyol D, 1.5-2.5 parts of foam stabilizer, 1.5-2.5 parts of water, 2-4 parts of composite catalyst, and 12-16 parts of methylal. According to the methylal-type combined polyether, methylal is used as a foaming agent, both the ODP (ozone-depletion potential) value and the GWP (global warming potential) value are zero, and the methylal-type combined polyether is an ideal material for replacing HCFC-141b in rigid polyurethane foam plastic production.
Description
Technical field:
The invention belongs to polyurethane rigid foam plastic foaming technique field, the particularly a kind of type of methylal〔Su〕 for field of household appliances and building field combined polyether, and the polyurethane rigid foam plastic goods that made by itself and polyisocyanates reaction.
Background technology:
Rigid urethane foam has the excellent characteristics such as density is low, intensity is high, thermal conductivity is low, sound insulation, waterproof, easy construction, as a kind of Multifunction macromolecular material, be widely used in the fields such as refrigerator, refrigerator-freezer, building, communications and transportation, petrochemical complex, military aviation.Along with the carrying out of China environmental protection work, HCFC-141b, as a kind of transition type whipping agent, is prohibited from using in field of household appliances, and other field is also progressively banning use of, and finds and develop various substituted type whipping agents extremely urgent.At present alternative whipping agent commonly used mainly contains pentamethylene, iso-pentane, HFC-245fa, HFC-365mfc or FEA1100 etc., wherein at home refrigerator of pentamethylene, refrigerator production, to be widely used.Methylal〔Su〕 is as the whipping agent of a kind of ODP=0, GWP=0, quite (molecular weight of methylal〔Su〕 is 76.1 for its molecular weight and pentamethylene, the molecular weight of pentamethylene is 70), also close (boiling point of methylal〔Su〕 is 42.3 ℃ to boiling point, the boiling point of pentamethylene is about 49 ℃), the thermal conductivity of gas is close with HCFC-141b again, and (HCFC-141b Measurement of Gas Thermal Conductivity in the time of 25 ℃ is about 10mW/m ﹒ K, methylal〔Su〕 Measurement of Gas Thermal Conductivity in the time of 25 ℃ is about 11mW/m ﹒ K), ample supply and prompt delivery, reasonable price, be a kind of desirable foaming agent that substitutes HCFC-141b at home.
Summary of the invention:
Purpose of the present invention is exactly the deficiency for prior art, and a kind of methylal〔Su〕 type combined polyether is provided, and it usings methylal〔Su〕 as whipping agent, and ODP value and GWP value are all zero, is to substitute the ideal material of HCFC-141b in polyurethane rigid foam plastic is produced.
Technology solution of the present invention is as follows:
A kind of methylal〔Su〕 type combined polyether, by weight, the each component proportioning is as follows:
Polyether glycol A, 20～60 parts;
Polyether glycol B, 10～40 parts;
Polyether glycol C, 10～40 parts;
Polyether glycol D, 0～30 part;
Suds-stabilizing agent, 1.5～2.5 parts;
Water, 1.5～2.5 parts;
Composite catalyst, 2～4 parts;
Methylal〔Su〕, 12～16 parts;
Wherein polyether glycol A is take sucrose as initiator, and the propylene oxide ring-opening polymerization forms, and hydroxyl value is 360～400mgKOH/g; Polyether glycol B is take sucrose as initiator, and the propylene oxide ring-opening polymerization forms, and hydroxyl value is 420～460mgKOH/g; Polyether glycol C is take sorbyl alcohol as initiator, and the propylene oxide ring-opening polymerization forms, and hydroxyl value is 380～420mgKOH/g; Polyether glycol D is take glycerine as initiator, and the propylene oxide ring-opening polymerization forms, and hydroxyl value is 380～420mgKOH/g, and polyether glycol A, B, C and D are that ShaoXing Hengfeng Polyurethane Industry Co., Ltd. produces.
Described suds-stabilizing agent is a kind of or any several mixture in B8525, AK8830 or H-3635, and manufacturer is respectively Degussa Investment Co., Ltd, Nanjing Dymatic Shichuang Chemical Co., Ltd., east, Zhongshan city high chemical industry company limited.
Described composite catalyst is by dimethylcyclohexylamine, pentamethyl-diethylidene support triamine, triethylene diamine, 1,3, a kind of or any several being composited in 5-bis-(dimethylamino-propyl) Hexahydrotriazine, dibutyl tin laurate.
The purity of described methylal〔Su〕 is more than 99%, for Jixi, Anhui Sanming City Fine Chemical Co., Ltd produces.
Beneficial effect of the present invention is:
With methylal〔Su〕, replace HCFC-141b to use as the whipping agent of combined polyether, the properties of gained polyurethane rigid foam plastic is good.
Embodiment:
Embodiment: embodiment is preparation by the following method all: each raw material is even by the share input container for stirring of giving in table 1, obtain methylal〔Su〕 type combined polyether.This combined polyether and polyphenyl polymethylene polyisocyanates are carried out to the high-speed mixing reaction by the weight ratio of combined polyether: isocyanic ester=1:1.1～1.3, make the polyurethane rigid foam plastic of methylal〔Su〕 foaming.
Table 1
Annotate: 1. the table Raw all calculates with the quality share;
2. apparent core density, thermal conductivity, low temperature dimensional stability, compressive strength are all measured by the requirement of standard GB/T/T 26689-2011.
As seen from Table 1, by the prepared polyurethane rigid foam plastic of methylal〔Su〕 type combined polyether of the present invention, the excellent propertys such as thermal conductivity, low temperature dimensional stability and compressive strength.
A kind of production method of methylal〔Su〕 type combined polyether, put into container for stirring by above-mentioned each component share on request and mix, and obtains methylal〔Su〕 type combined polyether.This combined polyether and polyphenyl polymethylene polyisocyanates are carried out to the high-speed mixing reaction by weight 1:1.1～1.3, namely can be made into the polyurethane rigid foam plastic take methylal〔Su〕 as whipping agent.
Claims (4)
1. methylal〔Su〕 type combined polyether, it is characterized in that: by weight, the each component proportioning is as follows:
Polyether glycol A, 20～60 parts;
Polyether glycol B, 10～40 parts;
Polyether glycol C, 10～40 parts;
Polyether glycol D, 0～30 part;
Suds-stabilizing agent, 1.5～2.5 parts;
Water, 1.5～2.5 parts;
Composite catalyst, 2～4 parts;
Methylal〔Su〕, 12～16 parts;
Wherein polyether glycol A is take sucrose as initiator, and the propylene oxide ring-opening polymerization forms, and hydroxyl value is 360～400mgKOH/g; Polyether glycol B is take sucrose as initiator, and the propylene oxide ring-opening polymerization forms, and hydroxyl value is 420～460mgKOH/g; Polyether glycol C is take sorbyl alcohol as initiator, and the propylene oxide ring-opening polymerization forms, and hydroxyl value is 380～420mgKOH/g; Polyether glycol D is take glycerine as initiator, and the propylene oxide ring-opening polymerization forms, and hydroxyl value is 380～420mgKOH/g, and polyether glycol A, B, C and D are that ShaoXing Hengfeng Polyurethane Industry Co., Ltd. produces.
2. a kind of methylal〔Su〕 type combined polyether according to claim 1, it is characterized in that: described suds-stabilizing agent is a kind of or any several mixture in B8525, AK8830 or H-3635, and manufacturer is respectively Degussa Investment Co., Ltd, Nanjing Dymatic Shichuang Chemical Co., Ltd., east, Zhongshan city high chemical industry company limited.
3. a kind of methylal〔Su〕 type combined polyether according to claim 1, it is characterized in that: described composite catalyst is for supportting triamine, triethylene diamine, 1 by dimethylcyclohexylamine, pentamethyl-diethylidene, a kind of or any several being composited in 3,5-bis-(dimethylamino-propyl) Hexahydrotriazine, dibutyl tin laurate.
4. a kind of methylal〔Su〕 type combined polyether according to claim 1, it is characterized in that: the purity of described methylal〔Su〕 is more than 99%, is that Jixi, Anhui Sanming City Fine Chemical Co., Ltd produces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102885560A CN103396522A (en) | 2013-07-09 | 2013-07-09 | Methylal-type combined polyether |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102885560A CN103396522A (en) | 2013-07-09 | 2013-07-09 | Methylal-type combined polyether |
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| CN103396522A true CN103396522A (en) | 2013-11-20 |
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| CN2013102885560A Pending CN103396522A (en) | 2013-07-09 | 2013-07-09 | Methylal-type combined polyether |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107108846A (en) * | 2015-01-08 | 2017-08-29 | 陶氏环球技术有限责任公司 | Polyetheracetal glycol composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101959943A (en) * | 2008-02-08 | 2011-01-26 | 陶氏环球技术公司 | Improved flexible foams |
| CN102443134A (en) * | 2011-09-16 | 2012-05-09 | 广东万华容威聚氨酯有限公司 | Polyurethane rigid foam and preparation method thereof |
-
2013
- 2013-07-09 CN CN2013102885560A patent/CN103396522A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101959943A (en) * | 2008-02-08 | 2011-01-26 | 陶氏环球技术公司 | Improved flexible foams |
| CN102443134A (en) * | 2011-09-16 | 2012-05-09 | 广东万华容威聚氨酯有限公司 | Polyurethane rigid foam and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 傅东海等: "微乳化技术在环戊烷型组合聚醚系统中的应用研究", 《电器》, no. 1, 15 October 2012 (2012-10-15), pages 100 - 104 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107108846A (en) * | 2015-01-08 | 2017-08-29 | 陶氏环球技术有限责任公司 | Polyetheracetal glycol composition |
| CN107108846B (en) * | 2015-01-08 | 2020-07-10 | 陶氏环球技术有限责任公司 | Polyether-acetal polyol compositions |
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Application publication date: 20131120 |