GB610714A - Process of converting lignin predominantly into its aldehydic and acidic fractions - Google Patents

Process of converting lignin predominantly into its aldehydic and acidic fractions

Info

Publication number
GB610714A
GB610714A GB10998/45A GB1099845A GB610714A GB 610714 A GB610714 A GB 610714A GB 10998/45 A GB10998/45 A GB 10998/45A GB 1099845 A GB1099845 A GB 1099845A GB 610714 A GB610714 A GB 610714A
Authority
GB
United Kingdom
Prior art keywords
lignin
sodium hydroxide
silver
aldehydic
vanillic acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB10998/45A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PAPER CHEMISTRY INST
Institute of Paper Chemistry
Original Assignee
PAPER CHEMISTRY INST
Institute of Paper Chemistry
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PAPER CHEMISTRY INST, Institute of Paper Chemistry filed Critical PAPER CHEMISTRY INST
Publication of GB610714A publication Critical patent/GB610714A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
    • C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives

Abstract

Lignin-containing materials are treated to obtain an alkaline solution containing the sodium salt of vanillic acid by exposing basic calcium lignosulphate or other material containing lignin in aqueous suspension at an initial temperature of at least 50 DEG C. to the action of silver oxide in the presence of an excess of sodium hydroxide. It is preferred that the lignin containing starting material should be substantially free of cellulose and sugars. The silver oxide is preferably freshly prepared. It may either be preformed by adding sodium hydroxide to silver nitrate and filtering before adding to the reaction mixture or it may be formed in situ by adding silver nitrate to a sodium hydroxide suspension of lignin. The products of the reaction are extracted with ether and the extract washed with bicarbonate to give a solution of the sodium salt of vanillic acid. The silver is recovered from the residue from the ether extract.
GB10998/45A 1944-05-17 1945-05-01 Process of converting lignin predominantly into its aldehydic and acidic fractions Expired GB610714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US610714XA 1944-05-17 1944-05-17

Publications (1)

Publication Number Publication Date
GB610714A true GB610714A (en) 1948-10-20

Family

ID=22033427

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10998/45A Expired GB610714A (en) 1944-05-17 1945-05-01 Process of converting lignin predominantly into its aldehydic and acidic fractions

Country Status (1)

Country Link
GB (1) GB610714A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2438180A2 (en) * 2009-06-01 2012-04-11 Strategic Enzyme Applications, Inc. Lignin oxidation and products thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2438180A2 (en) * 2009-06-01 2012-04-11 Strategic Enzyme Applications, Inc. Lignin oxidation and products thereof
EP2438180A4 (en) * 2009-06-01 2013-11-27 Strategic Enzyme Applic Inc Lignin oxidation and products thereof

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