GB421505A - Method of production of artificial film from seaweed, and the like - Google Patents

Method of production of artificial film from seaweed, and the like

Info

Publication number
GB421505A
GB421505A GB220634A GB220634A GB421505A GB 421505 A GB421505 A GB 421505A GB 220634 A GB220634 A GB 220634A GB 220634 A GB220634 A GB 220634A GB 421505 A GB421505 A GB 421505A
Authority
GB
United Kingdom
Prior art keywords
mixture
solution
films
filtered
dissolved
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
GB220634A
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 GB220634A priority Critical patent/GB421505A/en
Publication of GB421505A publication Critical patent/GB421505A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

A process for the production of films from brown alga and like seaweeds comprises the following steps. The brown alga or the like is immersed in aqueous sodium carbonate, filtered, and to the viscous solution is added dilute acid. The gelatinous substance is dissolved in a solution of alkali salt containing ammonia, filtered and reprecipitated and bleached, by adding a mixture of dilute hydrochloric and nitric acids. The washed and dried material is then dissolved in a mixture of aqueous sodium carbonate and a product obtained by passing mixed vapours of alcohol and ketone produced by dry distillation of lime acetate over a heated mixture of nickel and calcium sulphide. The solution, after maturing and diluting, is formed into films by coagulation in a bath containing caustic alkali and furfurol.ALSO:A process for the production of films from brown alga and like seaweeds comprises the following steps. The brown alga or the like is immersed in aqueous sodium carbonate, filtered, and to the viscous solution is added dilute acid. The gelatinous substance is dissolved in a solution of alkali salt containing ammonia, filtered, and reprecipitated and bleached, by adding a mixture of dilute hydrochloric and nitric acids. The washed and dried material is then dissolved in a mixture of aqueous sodium carbonate and a product obtained by passing mixed vapours of alcohol and ketone produced by dry distillation of lime acetate over a heated mixture of nickel and calcium sulphide. The solution, after maturing and diluting, is formed into films by coagulation in a bath containing caustic alkali and furfurol.
GB220634A 1934-01-22 1934-01-22 Method of production of artificial film from seaweed, and the like Expired GB421505A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB220634A GB421505A (en) 1934-01-22 1934-01-22 Method of production of artificial film from seaweed, and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB220634A GB421505A (en) 1934-01-22 1934-01-22 Method of production of artificial film from seaweed, and the like

Publications (1)

Publication Number Publication Date
GB421505A true GB421505A (en) 1934-12-21

Family

ID=9735448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB220634A Expired GB421505A (en) 1934-01-22 1934-01-22 Method of production of artificial film from seaweed, and the like

Country Status (1)

Country Link
GB (1) GB421505A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014108887A3 (en) * 2012-11-12 2014-09-12 Mulyono Noryawati S Si Edible bioplastic from seaweed and the manufacturing technology thereof
FR3012817A1 (en) * 2013-11-07 2015-05-08 Super Film Ambalaj San Tic A S COMPOSITION BASED ON POLYMERS FOR THE PRODUCTION OF PLASTIC PRODUCTS DEGRADABLE IN THE ENVIRONMENT AND PLASTIC PRODUCTS OBTAINED
CN113549236A (en) * 2021-09-22 2021-10-26 汇泰渤海水产有限责任公司 Degradable seaweed film, preparation method thereof and packaging product

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014108887A3 (en) * 2012-11-12 2014-09-12 Mulyono Noryawati S Si Edible bioplastic from seaweed and the manufacturing technology thereof
FR3012817A1 (en) * 2013-11-07 2015-05-08 Super Film Ambalaj San Tic A S COMPOSITION BASED ON POLYMERS FOR THE PRODUCTION OF PLASTIC PRODUCTS DEGRADABLE IN THE ENVIRONMENT AND PLASTIC PRODUCTS OBTAINED
CN113549236A (en) * 2021-09-22 2021-10-26 汇泰渤海水产有限责任公司 Degradable seaweed film, preparation method thereof and packaging product

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