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Hybrid polyester-polyether polyols

A technology of polyether polyol and polyester, which is applied in the field of preparing hybrid polyester-polyether polyol, and can solve the problems of wide polydispersity, high preparation temperature, troubles, etc.

Active Publication Date: 2013-01-09
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] While a wide variety of methods have been developed to prepare polyester-polyether polyols, many suffer from disadvantages
These disadvantages can include the presence of undesired residual diols in the polyol, broad polydispersity, poor yields and requiring preparation temperatures greater than 150°C

Method used

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  • Hybrid polyester-polyether polyols
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  • Hybrid polyester-polyether polyols

Examples

Experimental program
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Embodiment 1

[0124] 623.4 g (6.77 mol) of glycerin and 1503.9 g (10.15 mol) of phthalic anhydride were mixed in a 5 L stainless steel alkoxylation reactor. The reaction mixture was blown with 6 bar (600kPa) nitrogen (N 2 ) and rinse 10 times without stirring. The reactor was fed with 6 bar of N 2 The pressure was constant at 120°C. Initially, the solid reactor contents gradually dissolved in the reactor, becoming mostly liquid after 0.5 h at this temperature. Start stirring and gradually increase the stirring speed from 50 rpm to 200 rpm. The reactor contents were stirred for an additional 1.5 h. N in the reactor2 The pressure was reduced to 1.0 bar and the stirring rate was increased to 400 rpm. PO (1651 g, 28.43 mol) was fed to the reactor at a feed rate of 15 g / min over 110 min. The reaction started immediately with a strong exotherm. By the time the feed was complete, the total pressure in the reactor had reached 5.1 bar (510 kPa). The reactor temperature was increased to 130°C...

Embodiment 2

[0127] 307.4 g (3.34 mol) of glycerin and 741.6 g (5.01 mol) of phthalic anhydride were mixed in a 5 L stainless steel alkoxylation reactor. The reaction mixture was blown with 6 bar (600kPa) nitrogen (N 2 ) and rinse 10 times without stirring. The reactor was fed with 6 bar of N 2 The pressure was constant at 120°C. Initially, the solid reactor contents gradually dissolved in the reactor, becoming mostly liquid after 0.5 h at this temperature. Stirring was started and the stirring rate was gradually increased from 50 rpm to 200 rpm. The reactor contents were stirred for an additional 1.5 h. N in the reactor 2 The pressure was reduced to 1.0 bar (100 kPa). DMC catalyst (1.549 g, 800 ppm based on product weight) was added to the reactor. The reaction mixture was heated with 6 bar (600kPa) N 2 Pressure rinse 10 times. The stirring rate was increased to 400 rpm and the reactor temperature was increased to 130°C. PO (887 g, 15.27 mol) was fed to the reactor at a feed rat...

Embodiment 3

[0130] 650.0 g (6.13 mol) diethylene glycol, 1814.5 g (12.25 mol) phthalic anhydride, and DMC catalyst (0.036 g, 10 ppm based on product weight) were mixed in a 5 L stainless steel alkoxylation reactor. The reaction mixture was blown with 6 bar (600kPa) nitrogen (N 2 ) and rinse 10 times without stirring. The reactor uses 6 bar (600kPa) of N 2 The pressure was constant at 110°C. Initially, the solid reactor contents gradually dissolved in the reactor, becoming mostly liquid after 0.5 h at this temperature. Stirring was started and the stirring rate was gradually increased from 50 rpm to 200 rpm. The reactor contents were stirred for an additional 1.5 h. N in the reactor 2 The pressure was reduced to 1.0 bar (100 kPa). The stirring rate was increased to 400 rpm and the reactor temperature was increased to 120°C. PO (1189 g, 20.47 mol) was fed to the reactor at a feed rate of 15 g / min over a period of 60 min. The reaction started immediately with a strong exotherm. By t...

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Abstract

A process for preparing a hybrid polyester-polyether polyol comprises contacting a carboxyl group-containing component and an epoxide, optionally in the presence of one or more of a double metal cyanide catalyst, a superacid catalyst, a metal salt of a superacid catalyst and / or a tertiary amine catalyst, under conditions such that a hybrid polyester-polyether polyol is formed. The hybrid polyester-polyether polyol offers the advantages of both ester and ether functionalities when used in a polyurethane formulation, thus enhancing physical properties. The process results in products having narrow polydispersity, a low acid number and unsaturation, and reduced byproduct formation, particularly when the double metal cyanide catalyst is employed.

Description

[0001] Cross Reference Statement [0002] This application claims the benefit of US Provisional Application No. 61 / 329,219, filed April 29, 2010, and US Provisional Application No. 61 / 453,152, filed March 16, 2011, which are hereby incorporated by reference. technical field [0003] The present invention relates to a process for the preparation of hybrid polyester-polyether polyols from carboxyl-containing compounds and epoxides. More specifically, it relates to the preparation of hybrid polyester-polyether polyols, optionally utilizing one or more of double metal cyanide catalysts, superacid catalysts, metal salts of superacid catalysts, and / or tertiary amine catalysts Methods. Background technique [0004] Polyurethanes are produced in large quantities throughout the world. They are generally produced by reacting polyisocyanates with compounds comprising at least two hydrogen atoms reactive toward isocyanate groups, in particular polyether polyols and / or polyester polyo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/42C08G18/48C08G63/672C08G65/26
CPCC08G2101/0025C08J2375/06C08G65/2603C08J9/141C08G65/2672C08G65/2615C08G63/42C08G63/672C08G65/2663C08G18/4866C08G63/914C08G18/4261C08G65/2678C08G2110/0025
Inventor P·舒托夫J·吉梅内茨H·范德瓦尔F·卡萨蒂
Owner DOW GLOBAL TECH LLC
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