GB415329A - Process for stabilising cellulose esters - Google Patents

Process for stabilising cellulose esters

Info

Publication number
GB415329A
GB415329A GB309134A GB309134A GB415329A GB 415329 A GB415329 A GB 415329A GB 309134 A GB309134 A GB 309134A GB 309134 A GB309134 A GB 309134A GB 415329 A GB415329 A GB 415329A
Authority
GB
United Kingdom
Prior art keywords
methanol
petrol
parts
cellulose esters
stabilising
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
GB309134A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB309134A priority Critical patent/GB415329A/en
Publication of GB415329A publication Critical patent/GB415329A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B3/00—Preparation of cellulose esters of organic acids
    • C08B3/22—Post-esterification treatments, including purification
    • C08B3/26—Isolation of the cellulose ester
    • C08B3/28—Isolation of the cellulose ester by precipitation

Abstract

Cellulose esters obtained with the aid of sulphuric acid are stabilized by treating with methanol, alone or in solution in water, petrol, benzol or carbon tetrachloride, without pressure or heating. Some acetone or diacetone alcohol may be added to the methanol. In an example, fibrous cellulose triacetate, e.g. as produced according to Specification 381,991, is drained and treated for 3 hours at 25 DEG C. in a bath of 98 per cent methanol, then removed and dried. In a further example, nitrocellulose is drained and treated for 3 hours at 25 DEG C. with a mixture of 10 parts of methanol and 90 parts of petrol, or 85 parts of petrol and 5 of acetone, and then removed and dried.
GB309134A 1934-01-30 1934-01-30 Process for stabilising cellulose esters Expired GB415329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB309134A GB415329A (en) 1934-01-30 1934-01-30 Process for stabilising cellulose esters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB309134A GB415329A (en) 1934-01-30 1934-01-30 Process for stabilising cellulose esters

Publications (1)

Publication Number Publication Date
GB415329A true GB415329A (en) 1934-08-23

Family

ID=9751769

Family Applications (1)

Application Number Title Priority Date Filing Date
GB309134A Expired GB415329A (en) 1934-01-30 1934-01-30 Process for stabilising cellulose esters

Country Status (1)

Country Link
GB (1) GB415329A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415734A (en) * 1981-07-10 1983-11-15 Daicel Chemical Industries, Ltd. Process for preparation of cellulose acetate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415734A (en) * 1981-07-10 1983-11-15 Daicel Chemical Industries, Ltd. Process for preparation of cellulose acetate

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