Cellulose ethers and their use
US-9580581-B2 · Feb 28, 2017 · US
Hydroxypropyl methyl cellulose having high thermal gel strength, method for producing the same, and food containing the same
US10570217B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10570217-B2 |
| Application number | US-201715452894-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 8, 2017 |
| Priority date | Mar 15, 2016 |
| Publication date | Feb 25, 2020 |
| Grant date | Feb 25, 2020 |
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Abstract
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Hydroxypropyl methyl cellulose having a high thermal gel strength even at a low viscosity is provided and utilized. Specifically provided is hydroxypropyl methyl cellulose having such properties that a 2% by weight aqueous solution of the hydroxypropyl methyl cellulose has a viscosity at 20° C. of 300 to 2,000 mPa·s and a storage elastic modulus at 85° C. of 2,000 to 4,500 mPa. Also provided is a food comprising the hydroxypropyl methyl cellulose. Further provided is a method for producing the hydroxypropyl methyl cellulose, the method comprising a step of depolymerizing, with an acid, high-viscosity hydroxypropyl methyl cellulose having such a property that a 2% by weight aqueous solution of the high-viscosity hydroxypropyl methyl cellulose has a viscosity at 20° C. of 70,000 to 100,000 mPa·s to obtain the hydroxypropyl methyl cellulose.
First claim
Opening claim text (preview).
The invention claimed is: 1. Hydroxypropyl methyl cellulose having a viscosity at 20° C. of 300 to 2,000 mPa·s and a storage elastic modulus at 85° C. of 2,000 to 4,500 mPa as determined in a 2% by weight aqueous solution thereof. 2. The hydroxypropyl methyl cellulose according to claim 1 , having a thermal gelation temperature of 70° C. or more. 3. The hydroxypropyl methyl cellulose according to claim 2 , having an average degree of substitution (DS) of methoxy group per glucose unit of 1.0 to 2.0 and an average molar substitution (MS) of hydroxypropoxy group per glucose unit of 0.05 to 0.4. 4. A food comprising the hydroxypropyl methyl cellulose of claim 3 . 5. A food comprising the hydroxypropyl methyl cellulose of claim 2 . 6. The hydroxypropyl methyl cellulose according to claim 1 , having an average degree of substitution (DS) of methoxy group per glucose unit of 1.0 to 2.0 and an average molar substitution (MS) of hydroxypropoxy group per glucose unit of 0.05 to 0.4. 7. A food comprising the hydroxypropyl methyl cellulose of claim 3 . 8. A food comprising the hydroxypropyl methyl cellulose of claim 1 . 9. A method for producing the hydroxypropyl methyl cellulose of claim 1 , the method comprising: depolymerizing high-viscosity hydroxypropyl methyl cellulose with an acid to obtain the hydroxypropyl methyl cellulose of claim 1 , wherein the high-viscosity hydroxypropyl methyl cellulose has a viscosity at 20° C. of 70,000 to 100000 mPa·s as determined in a 2% by weight aqueous solution thereof. 10. The method according to claim 9 , wherein a viscosity reduction ratio in depolymerizing step is 97% or more.
Assignees
Inventors
Classifications
- C08B11/08Primary
with hydroxylated hydrocarbon radicals; Esters, ethers, or acetals thereof · CPC title
Cellulose; Derivatives thereof, e.g. ethers · CPC title
- C08B11/193Primary
Mixed ethers, i.e. ethers with two or more different etherifying groups · CPC title
with hydroxylated hydrocarbon radicals · CPC title
Food compositions, function of food ingredients or processes for food or foodstuffs · CPC title
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- What does patent US10570217B2 cover?
- Hydroxypropyl methyl cellulose having a high thermal gel strength even at a low viscosity is provided and utilized. Specifically provided is hydroxypropyl methyl cellulose having such properties that a 2% by weight aqueous solution of the hydroxypropyl methyl cellulose has a viscosity at 20° C. of 300 to 2,000 mPa·s and a storage elastic modulus at 85° C. of 2,000 to 4,500 mPa. Also provided is…
- Who is the assignee on this patent?
- Shinetsu Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification C08B11/08. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 25 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).