Rigid polyurethane foam comprising polyester polyether polyol

A polyether polyol, polyurethane foam technology, applied in the field of rigid polyurethane foam

Inactive Publication Date: 2018-05-18
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] On the downside, rigid polyurethane foams may sacrifice mechanical properties such as compressive strength, thermal insulation, or durability due to the lower density desired by consumers

Method used

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  • Rigid polyurethane foam comprising polyester polyether polyol
  • Rigid polyurethane foam comprising polyester polyether polyol
  • Rigid polyurethane foam comprising polyester polyether polyol

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example

[0042] The following examples are provided to illustrate various embodiments, but are not intended to limit the scope of the claims. All parts and percentages are by weight unless otherwise indicated.

[0043] The raw materials used in the examples are described as follows:

[0044] TERCAROL TM 8092 is a sorbitol-initiated polyether polyol available from The Dow Chemical Company (Midland, Mich.) having a hydroxyl value of 460 mg KOH / g and an average functionality of 5;

[0045] VORANOL TM RN490 is a reaction mass of sucrose propoxylation and glycerol propoxylation available from The Dow Chemical Company (Midland, Mich.), having a hydroxyl value of 490 mg KOH / g and an average functionality of 4.3;

[0046] Aromatic polyester polyol #1 is an aromatic polyester polyol from terephthalic acid, polyethylene glycol, and glycerin available from The Dow Chemical Company (Midland, Mich.) with 315 mg KOH / g Hydroxyl value and average functionality of 2.4;

[0047] TERCAROL TM 590...

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Abstract

Polyurethane foams are provided. The polyurethane foams are produced from a formulation that includes an isocyanate reacting mixture, an isocyanate component, and a blowing agent. The isocyanate reacting mixture includes at least 40 wt% of at least one propoxylated polyester-polyether polyol based on the total weight of the isocyanate reacting mixture. The isocyanate reacting mixture also includesat least one of propoxylated sucrose polyol or propoxylated sorbitol polyol. The propoxylated sucrose polyol and / or propoxylated sorbitol polyol has a hydroxyl number of from about 300 mg KOH / g to about 600 mg KOH / g. The polyurethane foam has a compressive strength of at least 130 kPa, and a stoichiometric index of the isocyanate component to the isocyanate reacting mixture is between about 1.0 and 1.7.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Italian Patent Application No. 102015000056432 filed September 29, 2015, the content of which is hereby incorporated by reference in its entirety. technical field [0003] Embodiments of the present disclosure relate generally to rigid polyurethane foams, and specifically to rigid polyurethane foams prepared from polyester polyether polyols. Background technique [0004] Rigid polyurethane foams are widely used as insulating materials, for example in the construction and electrical industry. Typically, these foams are closed cell rigid foams containing a low conductivity gas (eg hydrocarbon) within the cells. The foaming composition can be poured in liquid form to form a rigid foam board or panel using a continuous or discontinuous process. The panels may further include a veneer, such as a metal foil, adhered to the foam. [0005] On the downside, rigid polyurethane foams may ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/76C08J9/14C08G18/18C08G18/42
CPCC08G18/4829C08G18/4887C08G18/7664C08J9/141C08G18/1808C08G18/1816C08G18/3221C08J2203/14C08J2203/142C08G18/4816C08J2375/04C08J9/146C08G2110/0025C08G18/4854C08G18/7671C08J2203/162
Inventor P·戈利尼C·格利奥蒂
Owner DOW GLOBAL TECH LLC
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