Long-chain composition, long-chain composition set, its preparation and application thereof

Patent metadata

Field	Value
Publication number	US-12540342-B2
Application number	US-202017755315-A
Country	US
Kind code	B2
Filing date	Oct 26, 2020
Priority date	Oct 28, 2019
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

A long-chain composition has at least one long-chain alkane selected from the group consisting of C9-18 linear or branched alkanes and at least one long-chain carboxylic acid selected from the group consisting of C9-18 linear or branched, saturated or unsaturated aliphatic monocarboxylic acids. The mass ratio of the long-chain alkane to the long-chain carboxylic acid ranges from 1:1 to 40:1. The long-chain composition has a higher fermentation degree or higher substrate utilization rate and the like, when used as a starting material in the production of long-chain dibasic acids via fermentation.

First claim

The invention claimed is:

1 . A long-chain composition, comprising at least one long-chain alkane selected from the group consisting of n-dodecane, n-tetradecane, and n-hexadecane and at least one long-chain carboxylic acid selected from the group consisting of lauric acid, myristic acid, and palmitic acid, wherein the long-chain alkane and the long-chain carboxylic acid have the same number of carbon atoms, and the mass ratio of the long-chain alkane to the long-chain carboxylic acid ranges from 2:1 to 20:1, and the long-chain composition further comprises water and has a pH value ranging from 7.5 to 10, and the mass of the water is 0.5 to 10 times the sum of the mass of the long-chain alkane and the mass of the long-chain carboxylic acid.

2 . The long-chain composition of claim 1 , wherein the mass of the water is 1 to 5 times the sum of the mass of the long-chain alkane and the mass of the long-chain carboxylic acid.

3 . The long-chain composition of claim 1 , wherein the mass of the water is 1 to 3 times the sum of the mass of the long-chain alkane and the mass of the long-chain carboxylic acid.

4 . The long-chain composition of claim 1 , which is present in the form of a liquid or a solid-liquid mixture at 32° C.

5 . A set of long-chain compositions, comprising n long-chain compositions according to claim 1 present independently of each other, wherein n is a positive integer ranging from 2 to 40, and where the mass ratio of long-chain alkane to long-chain carboxylic acid in the i-th long-chain composition is R i , wherein i represents an arbitrary positive integer in the range from 2 to n, the mass ratio of long-chain alkane to long-chain carboxylic acid in the first long-chain composition is R 1 , and the mass ratio of long-chain alkane to long-chain carboxylic acid in the n-th long-chain composition is R n , then R i−1 /R i =1-20 and R 1 /R n =1.0001-30.

6 . The set of long-chain compositions of claim 5 , wherein n is a positive integer ranging from 4 to 20, and/or R i−1 /R i =1.0001-10, and/or R 1 /R n =1.01-10.

7 . The set of long-chain compositions of claim 5 , wherein the weight ratios between any two of the n long-chain compositions (calculated on the basis of the amount of long-chain composition) are the same or different, and/or the weight ratios between any two of the n long-chain compositions (calculated on the basis of the amount of long-chain alkane) are the same or substantially the same, and/or n is a positive integer ranging from 5 to 10, and/or R i−1 /R i =1.5-2, and/or R 1 /R n =1.5-2.

8 . The long-chain composition of claim 1 , wherein the long-chain composition is to be used in fermentation.

9 . The long-chain composition of claim 8 , wherein the fermentation is carried out by fermenting the long-chain composition in a fermentation base solution to produce a long-chain dibasic acid.

Assignees

• China Petroleum & Chem Corp
• Dalian Res Institute Of Petroleum And Petrochemicals Sinopec Corp

Inventors

• Zhang Lin
• Fan Yachao
• Shi Wenjing

Classifications

• C12N1/16 Primary

  Yeasts; Culture media therefor · CPC title

• C07C53/126

  Acids containing more than four carbon atoms · CPC title

• C12P7/6409 Primary

  Fatty acids · CPC title

• C12P5/02

  acyclic {(C12P5/007 takes precedence)} · CPC title

• C12N1/145

  Fungi isolates · CPC title