GB1262101A - Polymerization process - Google Patents

Polymerization process

Info

Publication number
GB1262101A
GB1262101A GB782069A GB782069A GB1262101A GB 1262101 A GB1262101 A GB 1262101A GB 782069 A GB782069 A GB 782069A GB 782069 A GB782069 A GB 782069A GB 1262101 A GB1262101 A GB 1262101A
Authority
GB
United Kingdom
Prior art keywords
polymerization
temperature
solution
polymers
layers
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
GB782069A
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.)
ChampionX LLC
Original Assignee
Nalco Chemical Co
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 Nalco Chemical Co filed Critical Nalco Chemical Co
Publication of GB1262101A publication Critical patent/GB1262101A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/003—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor characterised by the choice of material
    • B29C39/006—Monomers or prepolymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
    • C08F20/52—Amides or imides
    • C08F20/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
    • C08F20/56—Acrylamide; Methacrylamide

Abstract

1,262,101. Polymerization process. NALCO CHEMICAL CO. 13 Feb., 1969 [29 Nov., 1968], No. 7820/69. Heading C3P. Water-soluble polymers are prepared by polymerizing one or more polar solvent-soluble monomers, which undergo polymerization exothermically, by means of the following steps: (A) forming a polar solvent solution of the monomer(s) and a polymerization catalyst while maintaining a temperature of at least 100‹ F. but below the polymerization temperature, (B) forming the thus prepared solution into a layer 1-30 mm. thick, (c) heating the layer by means of a heated gas in a closed atmosphere to a temperature sufficient to initiate polymerization, and (D) thereafter continuing the polymerization in said closed atmosphere by the exothermic heat of reaction while utilizing said gas as a coolant until the desired polymerization is completed. In a preferred embodiment, the solution is formed into layers by placing in metal trays coated with polytetrafluoroethylene, and the trays heated in a drier unit wherein the heated gas is air; alternatively, the layers can be formed on a conveyer belt which is moved continuously through a drying chamber. After polymerization, the temperature can be increased to remove the solvent from the polymer product. The process is suitable for the preparation of acrylamide polymers, e.g. polyacrylamide and acrylamide-acrylic acid copolymers, which polymers are useful as flocculating agents for suspensions of solid particles. Polymerization catalysts specified are azobisisobutyronitrile, ammonium persulphate, and ammonium persulphate/sodium metabisulphite. In examples polymerization is effected in aqueous solution.
GB782069A 1968-11-29 1969-02-13 Polymerization process Expired GB1262101A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78028868A 1968-11-29 1968-11-29

Publications (1)

Publication Number Publication Date
GB1262101A true GB1262101A (en) 1972-02-02

Family

ID=25119166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB782069A Expired GB1262101A (en) 1968-11-29 1969-02-13 Polymerization process

Country Status (3)

Country Link
DE (1) DE1915903C3 (en)
ES (1) ES364584A1 (en)
GB (1) GB1262101A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857610A (en) * 1985-12-18 1989-08-15 Chemische Fabrik Stockhausen Gmbh Process for the continuous production of polymers and copolymers of water-soluble monomers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3246905A1 (en) * 1982-12-18 1984-06-20 Röhm GmbH, 6100 Darmstadt METHOD FOR PRODUCING POLYMETHACRYLAMIDE AND COPOLYMERISATS THEREOF
JPS6220501A (en) * 1985-07-19 1987-01-29 Mitsubishi Rayon Co Ltd Production of water-soluble or water-swellable polymer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857610A (en) * 1985-12-18 1989-08-15 Chemische Fabrik Stockhausen Gmbh Process for the continuous production of polymers and copolymers of water-soluble monomers

Also Published As

Publication number Publication date
DE1915903B2 (en) 1974-07-04
DE1915903A1 (en) 1970-07-30
ES364584A1 (en) 1971-02-01
DE1915903C3 (en) 1975-02-27

Similar Documents

Publication Publication Date Title
US4154910A (en) Method for producing acrylamide polymers
KR900007890A (en) Process for producing absorbent composites Process for continuous production Products and apparatus
FR2606778B1 (en) CROSSLINKING PROCESS
GB1262101A (en) Polymerization process
US3058958A (en) Continuous polymerization of acrylic salts
DK172580B1 (en) Process for the preparation of polymers and copolymers of amidosulfonic acid-containing monomers and salts thereof
US3663518A (en) Process for preparing acrylamide polymers
FR2322875A1 (en) METHOD OF EVACUATION OF THE REACTION HEAT DURING THE COPOLYMERIZATION OF ETHYLENE IN AQUEOUS DISPERSION
ES466003A1 (en) Method for the polymerization of vinyl monomers
EP0356242A3 (en) Polymerisation processes and products
Ogiwara et al. Radical formation and graft copolymerization on photo‐irradiated aldehyde cellulose
KR880004006A (en) Process for preparing vinyl chloride mono- and copolymers capable of forming plastisols
ES427987A1 (en) Catalytic process for the preparation of polyacrylonitrile and acrylonitrile copolymers
JPH06256414A (en) Production of (meth)acrylic acid (salt) polymer
SU727597A1 (en) Unit for producing concrete-polymeric articles
ES427985A1 (en) A catalytic procedure to prepare polymers and acrylonitrile copolymers. (Machine-translation by Google Translate, not legally binding)
US3716511A (en) Coating composition of an aqueous dispersion of copolymeric vinylidene chloride
GB1311542A (en) Graft polymerisation
SU679525A1 (en) Silica gel treatment method
Saika et al. Polymer radicals trapped in radical‐initiated polytetrafluoroethylene
JPS5224295A (en) Process for preparing powdered acrylamide polymers
SU427958A1 (en) METHOD OF OBTAINING WATER SOLUBLE COPOLYMERS
SE7610123L (en) PROCEDURE FOR FINISHING VINYL CHLORIDE POLYMERS
SU420634A1 (en) METHOD OF OBTAINING POLYMETHYLMETACRYLATE
DK137336B (en) Process for the discontinuous production of vinyl chloride-based polymers and copolymers by bulk polymerization.