Biomass-resource-derived polyurethane, method for producing same, and biomass-resource-derived polyester polyol
US-10351658-B2 · Jul 16, 2019 · US
Biomass-resource-derived polyurethane, method for producing same, and biomass-resource-derived polyester polyol
US10619000B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10619000-B2 |
| Application number | US-201916413862-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 16, 2019 |
| Priority date | Mar 31, 2010 |
| Publication date | Apr 14, 2020 |
| Grant date | Apr 14, 2020 |
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- Title
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Abstract
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The invention relates to a method for producing a biomass-resource-derived polyurethane, which comprises: reacting a dicarboxylic acid and an aliphatic diol to produce a polyester polyol; and reacting the polyester polyol and a polyisocyanate compound, wherein the dicarboxylic acid contains at least one component derived from biomass resources, a content of an organic acid in the dicarboxylic acid is more than 0 ppm and not more than 1,000 ppm relative to the dicarboxylic acid, and a pKa value of the organic acid at 25° C. is not more than 3.7.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a biomass-resource-derived polyurethane, the method comprising: reacting an organic acid having a pKa value at 25° C. of not more than 3.7, a dicarboxylic acid other than the organic acid, and an aliphatic diol to produce a polyester polyol having a number average molecular weight of 500 to 4,500; and reacting the polyester polyol and a polyisocyanate compound, to obtain the biomass-resource-derived polyurethane, wherein the dicarboxylic acid comprises at least one component derived from biomass resources, wherein a content of the organic acid is more than 0 ppm and not more than 1,000 ppm relative to the dicarboxylic acid. 2. The method for producing a biomass-resource-derived polyurethane according to claim 1 , wherein the dicarboxylic acid contains succinic acid derived from biomass resources. 3. The method for producing a biomass-resource-derived polyurethane according to claim 1 , wherein the organic acid having a pKa value at 25° C. of not more than 3.7 has three or more active hydrogen groups per molecule. 4. The method for producing a biomass-resource-derived polyurethane according to claim 1 , wherein the organic acid having a pKa value of the organic acid at 25° C. of not more than 3.7 is at least one member selected from malic acid, tartaric acid, and citric acid.
Assignees
Inventors
Classifications
- C08G18/4238Primary
derived from dicarboxylic acids and dialcohols · CPC title
from polyesters · CPC title
Soles · CPC title
with compounds of group C08G18/3203 · CPC title
Plastics, rubber or vulcanised fibre · CPC title
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- What does patent US10619000B2 cover?
- The invention relates to a method for producing a biomass-resource-derived polyurethane, which comprises: reacting a dicarboxylic acid and an aliphatic diol to produce a polyester polyol; and reacting the polyester polyol and a polyisocyanate compound, wherein the dicarboxylic acid contains at least one component derived from biomass resources, a content of an organic acid in the dicarboxylic a…
- Who is the assignee on this patent?
- Mitsubishi Chem Corp
- What technology area does this patent fall under?
- Primary CPC classification C08G18/4238. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 14 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).