GB1272302A - Process for the preparation of new plastics materials, and plastics materials produced by said process - Google Patents

Process for the preparation of new plastics materials, and plastics materials produced by said process

Info

Publication number
GB1272302A
GB1272302A GB355669A GB355669A GB1272302A GB 1272302 A GB1272302 A GB 1272302A GB 355669 A GB355669 A GB 355669A GB 355669 A GB355669 A GB 355669A GB 1272302 A GB1272302 A GB 1272302A
Authority
GB
United Kingdom
Prior art keywords
solution
fabric
nylon
neutralisation
plastics materials
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
GB355669A
Inventor
Michel Lefebvre
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
Publication of GB1272302A publication Critical patent/GB1272302A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/59—Polyamides; Polyimides
    • 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
    • C08J11/00—Recovery or working-up of waste materials
    • 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
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Sustainable Development (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Polyamides (AREA)

Abstract

1,272,302. Polyaminoacid coating. M. S. M. LEFEBVRE. 22 Jan., 1969 [22 Jan., 1968; 6 Dec., 1968], No. 3556/69. Heading B2E. [Also in Division C3] A poly(aminoacid) is treated with a solution comprising a hydrogen halide in a mixture of water and alcohol at a concentration which effects a depolymerisation such that the reduction of the degree of polymerisation by 50% takes more than a minute and in a quantity sufficient to take all the partially depolymerised polyamide into solution, and the resulting solution is then neutralised with an alkali to form a precipitate. Preferably the solution is allowed to stand for about a day before neutralisation. A softening agent e.g. polyoxyethylene sulphonate or menthol or other phenol may be mixed with the solution or neutralising agent. Precipitation may be effected in the presence of a filler, e.g. rare earth oxides, or in situ on a fabric. In the case of nylon 6 HCl at a concentration exceeding 2 moles/litre may be used. The precipitation product is stated to have ionic sites which cause reticulation giving a cellular product having very different electrostatic properties from the starting polyamide. Uses. The application of the process with neutralisation effected in situ on a fabric is stated to improve opacity, moisture-absorbance and fire-resistance and to modify the dyeing properties. A further treatment with aqueous sodium bicarbonate forms bubbles in the coating and give a simulated leather appearance. Polymer precipitates on a filler may be used for radiation-deflecting or absorbing screens. Specified fabrics are cotton, polyester and nylon. In the case of nylon contact with the solution prior to neutralisation should be brief (less than 10 and 3 seconds for nylons 66 and 6 respectively) and the fabric may first be dipped in water. The solution may be applied by doctor blade, bath or roller.
GB355669A 1968-01-22 1969-01-22 Process for the preparation of new plastics materials, and plastics materials produced by said process Expired GB1272302A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR136879A FR1584238A (en) 1968-01-22 1968-01-22
FR177054A FR1602721A (en) 1968-01-22 1968-12-06

Publications (1)

Publication Number Publication Date
GB1272302A true GB1272302A (en) 1972-04-26

Family

ID=26181744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB355669A Expired GB1272302A (en) 1968-01-22 1969-01-22 Process for the preparation of new plastics materials, and plastics materials produced by said process

Country Status (10)

Country Link
AT (1) AT297322B (en)
BE (1) BE727221A (en)
DE (1) DE1902147A1 (en)
ES (1) ES362795A1 (en)
FR (2) FR1584238A (en)
GB (1) GB1272302A (en)
IL (1) IL31465A0 (en)
LU (1) LU57819A1 (en)
NL (1) NL6901017A (en)
OA (1) OA02980A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024002975A1 (en) 2022-06-26 2024-01-04 Solvay Specialty Polymers Usa, Llc Method for recycling a polyamide under acidic conditions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024002975A1 (en) 2022-06-26 2024-01-04 Solvay Specialty Polymers Usa, Llc Method for recycling a polyamide under acidic conditions

Also Published As

Publication number Publication date
LU57819A1 (en) 1969-05-14
NL6901017A (en) 1969-07-24
IL31465A0 (en) 1969-03-27
FR1584238A (en) 1969-12-19
DE1902147A1 (en) 1969-09-04
AT297322B (en) 1972-03-27
FR1602721A (en) 1971-01-18
OA02980A (en) 1970-12-15
BE727221A (en) 1969-07-01
ES362795A1 (en) 1970-11-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees