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 processInfo
- 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
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.
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)
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 |
-
1968
- 1968-01-22 OA OA53485A patent/OA02980A/en unknown
- 1968-01-22 FR FR136879A patent/FR1584238A/fr not_active Expired
- 1968-12-06 FR FR177054A patent/FR1602721A/fr not_active Expired
-
1969
- 1969-01-17 DE DE19691902147 patent/DE1902147A1/en active Pending
- 1969-01-22 LU LU57819D patent/LU57819A1/xx unknown
- 1969-01-22 GB GB355669A patent/GB1272302A/en not_active Expired
- 1969-01-22 IL IL31465A patent/IL31465A0/en unknown
- 1969-01-22 AT AT64469A patent/AT297322B/en not_active IP Right Cessation
- 1969-01-22 ES ES362795A patent/ES362795A1/en not_active Expired
- 1969-01-22 NL NL6901017A patent/NL6901017A/xx unknown
- 1969-01-22 BE BE727221D patent/BE727221A/xx unknown
Cited By (1)
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 |