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Natural oil based polyol blends

A polyol and natural oil technology, applied in the field of polyol blends, can solve problems such as foaming method or foam quality degradation

Inactive Publication Date: 2014-03-05
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some cases, the use of natural oil-based polyols can result in poor foaming methods or foam quality

Method used

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  • Natural oil based polyol blends
  • Natural oil based polyol blends
  • Natural oil based polyol blends

Examples

Experimental program
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Effect test

preparation example Construction

[0047] For the production of flexible foams, the polyisocyanates may generally be toluene-2,4-diisocyanate and benzene-2,6-diisocyanate or MDI or combinations of TDI / MDI or prepolymers made therefrom.

[0048] Isocyanate-terminated prepolymers can also be used in polyurethane formulations. Such prepolymers can be obtained by reaction of excess polyols. The polyol may be a conventional petroleum-based polyol, a polyol derived from natural oils, an amine-initiated polyol, and / or a combination of polyols.

[0049] Processes for making polyurethane products are well known in the art. In general, the components of the polyurethane-forming reaction mixture can be mixed together in any convenient manner, for example by using any mixing equipment described for this purpose in the prior art, for example in "Polyurethane Handbook" by G. Oertel ", a mixing device described in Hanser publisher.

[0050] Generally, polyurethane foams are prepared by reacting a polyisocyanate with a poly...

Embodiment 1-6 and comparative example 1 and 2

[0109] Foams (Examples E1-E6 and Comparative Examples C1 and C2) were prepared by pre-blending the components in Table 1 except the isocyanate, all foams conditioned at 25°C. The isocyanate SPECFLEX * NE 134 was conditioned separately at 25°C. Foams were prepared by hand stirring at 2,000 RPM for 5 seconds and each reactant was poured into a 300x300x10 mm aluminum mold equipped with vent holes heated at 60°C. The mold release agent was Kluber 41-2038 from Chem-Trend. The demoulding time was 4 minutes.

[0110] Core density is measured according to ASTM D3574-95 after removal of any skin formed on the surface of the molded or free-rising foam block.

[0111] 50% CFD is a measure of the compressive deflection of a flexible material (e.g., foam), measured as the amount required to compress a 5 cm thick sample not smaller than 100 cm square to 50% deflection after 4 pre-cycles Force in kPa. CFD is measured according to the procedure of DIN 53577.

[0112] Airflow is the volu...

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Abstract

A natural oil based polyol blend is provided. The blend includes a first natural oil based polyol comprising is the reaction product of a first monomer and a first initiator, and where the first monomer is derived from at least one first fatty acid methyl ester. The blend also includes a second natural oil based polyol comprising the reaction product of a second monomer and a second initiator. The second monomer is derived from at least one second fatty acid methyl ester, and at least one of the second monomer and the second initiator is different from the first monomer and the first initiator, respectively. The natural oil based polyol blend may be reacted with an isocyanate to form a foam.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application 61 / 051,744, filed May 9, 2008, entitled "NATURAL OIL BASED POLYOL BLENDS," which is incorporated herein by reference. technical field [0003] Embodiments of the present invention relate generally to blends of polyols; more particularly, to blends of polyols based on renewable resources for use in polyurethane products. Background technique [0004] Polyether polyols based on the polymerization of alkylene oxides, polyester polyols, or combinations thereof with isocyanates are the main components of polyurethane systems. One class of polyols is conventional petroleum-based polyols, while another class is those polyols prepared from vegetable oils or other renewable raw materials (known as natural oil-based polyols, or NOPBs). Polyols based on renewable raw materials can be sold and commercially traded as components of polyol blends, which may also t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/36C08G18/48
CPCC08G2101/0008C08G18/4072C08G18/4891C08G2101/0083C08G2101/005C08G18/632C08G18/4841C08G18/4812C08G2110/005C08G2110/0083C08G2110/0008
Inventor 弗朗索瓦.卡萨蒂让-马里.桑尼
Owner DOW GLOBAL TECH LLC
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