CN105885030A - 一种低分子量分布聚醚的制备方法 - Google Patents

一种低分子量分布聚醚的制备方法 Download PDF

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CN105885030A
CN105885030A CN201610490668.8A CN201610490668A CN105885030A CN 105885030 A CN105885030 A CN 105885030A CN 201610490668 A CN201610490668 A CN 201610490668A CN 105885030 A CN105885030 A CN 105885030A
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low molecular
molecular weight
polyether
weight distribution
distribution
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应珏
翟洪金
郑磊
于文超
许家鹏
徐波涛
董胜
王传超
王成建
许谦
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Jurong Ningwu New Material Co Ltd
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Jurong Ningwu New Material Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26Macromolecular 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
    • C08G65/2603Macromolecular 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
    • C08G65/2606Macromolecular 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
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26Macromolecular 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
    • C08G65/2642Macromolecular 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 characterised by the catalyst used
    • C08G65/2645Metals or compounds thereof, e.g. salts
    • C08G65/2663Metal cyanide catalysts, i.e. DMC's
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2101/00Manufacture of cellular products

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  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Toxicology (AREA)
  • Polyethers (AREA)

Abstract

本发明公开了一种低分子量分布聚醚的制备方法,是由以下重量份数的原料制成:低分子量聚醚8‑10,PO 90,DMC催化剂及碳酸锂0.05‰。将低分子量聚醚、碳酸锂投入到反应器中;然后在115‑120℃温度下通过氮气流脱水,水份合格后,加入DMC催化剂,通入环氧丙烷,环氧丙烷投加结束后,搅拌1‑3小时,使体系充分反应,然后抽真空,冷却后制得低分子量分布聚醚。本发明催化剂用量小,单体转化率高,聚合较稳定。

Description

一种低分子量分布聚醚的制备方法
技术领域
本发明属于有机高分子化合物的制备方法,具体地说是以一种新型催化剂(DMC)代替原始碱催化剂的低分子量分布聚醚的制备方法。
背景技术
随着聚醚多元醇生产工艺的不断改进,产品的质量也在不断提高,但传统聚醚的工业化生产一直以阴离子催化开环聚合为主,产品中单羟基聚醚含量高,分子量分布较宽,双键含量较高,影响聚氨酯制品的机械物理性能。当多元醇分子量增加时,异构化变得尤为显著。目前还没有得到很好的解决。
发明内容
本发明的目的是提供一种低分子量分布聚醚的制备方法,采用该聚醚制备的聚氨酯泡沫可以减少TDI的用量,使泡沫的弹性和舒适性得到改善。
本发明的目的是通过以下技术方案来实现的:
一种低分子量分布聚醚的制备方法,其特征在于:该方法以低分子量聚醚为起始剂;DMC催化剂;与环氧丙烷开环聚合反应制备;包括如下步骤:
1)准备原料,原料重量份数为低分子量聚醚(分子量800)8-10;DMC催化剂0.04‰-0.05‰;环氧丙烷80-90;碳酸锂0.01‰-0.03‰;
2)将低分子量聚醚、碳酸锂投入到反应器中;然后在115-120℃温度下通过氮气流脱水,水份合格后,加入DMC催化剂,通入环氧丙烷,环氧丙烷投加结束后,搅拌1-3小时,使体系充分反应,然后抽真空,冷却后制得低分子量分布聚醚。
水份合格是指水份质量份数低于0.05%。
上述制备方法制得的低分子量分布聚醚应用在聚氨酯泡沫中。
本发明制备的低分子量分布聚醚通过使用DMC络合催化剂引发PO开环聚合,合成分子规整好,质量稳定,价格性能比高,制备聚氨酯泡沫可以减少TDI的用量,并使泡沫的弹性和舒适性得到改善。
本发明催化剂用量小,单体转化率高,聚合较稳定。
具体实施方式
下面通过具体实施例对本发明作进一步的说明,但各实施例均不是对本发明的具体限制。
实施例1
一种低分子量分布聚醚的制备方法,以低分子量聚醚为起始剂;DMC催化剂;与环氧丙烷开环聚合反应制备。包括如下步骤:
①原料重量份数:低分子量聚醚(自制,分子量800)8;DMC催化剂0.05‰(华阴恒瑞公司);环氧丙烷90(江苏优利德化工有限公司)。碳酸锂0.01‰(上海比尤公司)。
②将低分子量聚醚、碳酸锂投入到反应器中,然后在115-120℃温度下通过氮气流脱水,水份合格后(水份合格是指水份质量份数低于0.05%),加入DMC催化剂,通入环氧丙烷,环氧丙烷投加结束后,搅拌1-3小时,使体系充分反应,然后抽真空,冷却后制得低分子量分布聚醚。
实施例2
一种低分子量分布聚醚的制备方法,以低分子量聚醚为起始剂;DMC催化剂;与环氧丙烷开环聚合反应制备。包括如下步骤:
①原料重量份数:低分子量聚醚(自制,分子量800)10;DMC催化剂0.04‰(华阴恒瑞公司);环氧丙烷90(江苏优利德化工有限公司)。碳酸锂0.02‰(上海比尤公司)。
②将低分子量聚醚、碳酸锂投入到反应器中,然后在115-120℃温度下通过氮气流脱水,水份合格后,加入DMC催化剂,通入环氧丙烷,环氧丙烷投加结束后,搅拌1-3小时,使体系充分反应,然后抽真空,冷却后制得聚醚。
实施例3
上述制备方法制得的低分子量分布聚醚的应用,取聚氨酯泡沫用聚醚多元醇100份,硅油2份,三乙烯二胺催化剂0.2份,水3份,异氰酸酯110份,高速搅拌混合后发泡制得聚氨酯泡沫制品。

Claims (3)

1.一种低分子量分布聚醚的制备方法,其特征在于:该方法以低分子量聚醚为起始剂;DMC催化剂;与环氧丙烷开环聚合反应制备;包括如下步骤:
1)准备原料,原料重量份数为低分子量聚醚8-10;DMC催化剂0.04‰-0.05‰;环氧丙烷80-90;碳酸锂0.01‰-0.03‰;
2)将低分子量聚醚、碳酸锂投入到反应器中;然后在115-120℃温度下通过氮气流脱水,水份合格后,加入DMC催化剂,通入环氧丙烷,环氧丙烷投加结束后,搅拌1-3小时,使体系充分反应,然后抽真空,冷却后制得低分子量分布聚醚。
2.根据权利要求1所述的低分子量分布聚醚的制备方法,其特征在于:水份合格是指水份质量份数低于0.05%。
3.根据权利要求1所述的低分子量分布聚醚的制备方法,其特征在于:低分子量聚醚的分子量800。
CN201610490668.8A 2016-06-29 2016-06-29 一种低分子量分布聚醚的制备方法 Pending CN105885030A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112480390A (zh) * 2020-11-30 2021-03-12 广东聚航新材料研究院有限公司 一种用于双环戊二烯树脂的抗静电剂及其制备方法
CN114456345A (zh) * 2022-01-17 2022-05-10 江苏斯德瑞克化工有限公司 一种阻燃聚醚多元醇及其制备方法

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CN101108896A (zh) * 2006-07-20 2008-01-23 拜尔材料科学有限公司 耐高含水量的聚醚生产方法
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CN102574999A (zh) * 2009-09-17 2012-07-11 旭硝子株式会社 聚醚类的制造方法
CN101967226A (zh) * 2010-09-28 2011-02-09 山东蓝星东大化工有限责任公司 高活性高分子量聚醚多元醇的合成方法
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112480390A (zh) * 2020-11-30 2021-03-12 广东聚航新材料研究院有限公司 一种用于双环戊二烯树脂的抗静电剂及其制备方法
CN112480390B (zh) * 2020-11-30 2023-05-09 广东聚航新材料研究院有限公司 一种用于双环戊二烯树脂的抗静电剂及其制备方法
CN114456345A (zh) * 2022-01-17 2022-05-10 江苏斯德瑞克化工有限公司 一种阻燃聚醚多元醇及其制备方法

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