GB897395A - Multi-stage polymerization process - Google Patents

Multi-stage polymerization process

Info

Publication number
GB897395A
GB897395A GB26487/59A GB2648759A GB897395A GB 897395 A GB897395 A GB 897395A GB 26487/59 A GB26487/59 A GB 26487/59A GB 2648759 A GB2648759 A GB 2648759A GB 897395 A GB897395 A GB 897395A
Authority
GB
United Kingdom
Prior art keywords
polymerization
monomeric
mould
room temperature
partially
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
GB26487/59A
Inventor
Edward Noonan Squire
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to GB26487/59A priority Critical patent/GB897395A/en
Priority claimed from DEF29076A external-priority patent/DE1100958B/en
Publication of GB897395A publication Critical patent/GB897395A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
    • C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/02—Polymerisation in bulk
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/12—Polymerisation in non-solvents
    • C08F2/16—Aqueous medium
    • C08F2/22—Emulsion polymerisation
    • C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/12—Polymerisation in non-solvents
    • C08F2/16—Aqueous medium
    • C08F2/22—Emulsion polymerisation
    • C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
    • C08F2/30—Emulsion polymerisation with the aid of emulsifying agents non-ionic
    • 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
    • C08F20/10—Esters
    • C08F20/26—Esters containing oxygen in addition to the carboxy oxygen
    • 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
    • C08F220/00—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
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
    • 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
    • C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
    • C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
    • C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

Monomeric or partially polymerized vinyl-containing organic compounds are partially or further polymerized in a non-compression preforming mould in the presence of a catalyst at between room temperature and 95 DEG C. to produce a performed article which will retain its shape at room temperature, and the polymerization is completed in a compression mould at a pressure of up to 1,000 p.s.i. Acrylate and alkacrylate monomeric or partially polymerized compounds, particularly methyl methacrylate syrups, having a viscosity of between 0,1 and 150 poises at 25 DEG C. are preferred. Temperature is a critical factor during the preform stage and should preferably be between 45 DEG and 50 DEG C. while the final polymerization should preferably be effected at between 80 DEG and 150 DEG C. In one example, an initial monomer-polymer slurry is prepared from methyl methacrylate 120, polymethyl methacrylate 120 and a ,a 1-azodiisobutyronitrile (catalyst) 0,2 lbs. When a viscosity of 20 poises is attained, n-propyl sulphite 0,8 lb. may be added, if desired. In other examples, benzoyl peroxide, t-butyl peracetate, 2,4-dichlorobenzoyl peroxide and dimethyl aniline are used as catalysts. U.S.A. Specification 2,471,959 is referred to.ALSO:Monomeric or partially polymerized vinyl-containing organic compounds are partially or further polymerized in a non-compression preforming mould in the presence of a catalyst at between room temperature and 95 DEG C. to produce a preformed article which will retain its shape at room temperature, and the polymerization is completed in a compression mould at a pressure of up to 1000 psi. Acrylate and alkacrylate monomeric or partially polymerized compounds, particularly methyl methacrylate syrups, having a viscosity of between 0,1 and 150 poises at 25 DEG C. are preferred. Temperature is a critical factor during the preform stage and should preferably be between 45 DEG and 50 DEG C. while the temperature of the final polymerization should preferably be between 80 DEG and 150 DEG C. When preforms with glass fibre reinforcement are to be made, the reinforcement is inserted before the first stage polymerization, e.g. by placing a fibre mat in the preform mould and then adding the syrup with a "squeegeeing" action. Metal screens, ferrous or non-ferrous, may also be used as reinforcement. U.S.A. Specification 2,471,959 is referred to.
GB26487/59A 1959-08-01 1959-08-01 Multi-stage polymerization process Expired GB897395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26487/59A GB897395A (en) 1959-08-01 1959-08-01 Multi-stage polymerization process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEF29076A DE1100958B (en) 1959-08-01 1959-08-01 Process for the production of polymer dispersions
GB26487/59A GB897395A (en) 1959-08-01 1959-08-01 Multi-stage polymerization process

Publications (1)

Publication Number Publication Date
GB897395A true GB897395A (en) 1962-05-23

Family

ID=25974380

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26487/59A Expired GB897395A (en) 1959-08-01 1959-08-01 Multi-stage polymerization process

Country Status (1)

Country Link
GB (1) GB897395A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158478A2 (en) * 1984-03-27 1985-10-16 Kuraray Co., Ltd. Methacrylic resin molding material and method for production thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158478A2 (en) * 1984-03-27 1985-10-16 Kuraray Co., Ltd. Methacrylic resin molding material and method for production thereof
EP0158478A3 (en) * 1984-03-27 1986-12-17 Kyowa Gas Chemical Industry Co., Ltd. Methacrylic resin molding material and method for production thereof
US4791184A (en) * 1984-03-27 1988-12-13 Kyowa Gas Chemical Industry Co., Ltd. Methacrylic resin molding material and method for production thereof

Similar Documents

Publication Publication Date Title
US2384387A (en) Treatment of urea-formaldehyde resin foam
US3639524A (en) Hydrophilic gel polymer insoluble in water from polyvinylpyrrolidone with n-vinyl-2-pyrrolidone and methacrylic modifier
ATE6784T1 (en) POLYMER COMPOSITIONS AND THEIR PRODUCTION.
US3154600A (en) Methacrylate sirups and their preparation, and preparation of reinforced plastic articles employing same
US3972969A (en) Manufacture of cement-resin composite articles
US2899402A (en) Process for manufacturing fiber re-
US4104208A (en) Process for preparation of hard and porous polyvinylalcohol gels
GB1080484A (en) Graft terpolymer process
US4113803A (en) Acrylic sheet having improved thermoshaping properties
GB897395A (en) Multi-stage polymerization process
US3084068A (en) Process for acrylic polymerizations
DE59007037D1 (en) Process for the production of pearl-shaped expandable styrene polymers.
JPH0422196B2 (en)
US3013305A (en) Method for making copolymers
US2786793A (en) Method of fabricating glass rod
WO2003033558A3 (en) High index curable photochromic composition and its process
KR960701735A (en) Improved process for resin transfer molding
US3287155A (en) Process for impregnating glass fiber mat with methyl methacrylate polymer
KR830004049A (en) Casting core and mold production method using binder cured by free radical polymerization
IL66090A (en) Curable molding compositions,molded articles prepared therefrom and process for producing fiber reinforced articles
US4725397A (en) Thermosetting preform having superior transparency and process for producing molded articles from said preform
KR900014476A (en) Manufacturing method of thick molded article
US4367290A (en) Method for manufacture of foamed article
KR900003912B1 (en) Anti-impactness polystrene
KR830000944B1 (en) Transparency Reinforced Fiberglass Mold Plate Manufacturing Method