GB1002529A - Polymerization process and products - Google Patents

Polymerization process and products

Info

Publication number
GB1002529A
GB1002529A GB4909563A GB4909563A GB1002529A GB 1002529 A GB1002529 A GB 1002529A GB 4909563 A GB4909563 A GB 4909563A GB 4909563 A GB4909563 A GB 4909563A GB 1002529 A GB1002529 A GB 1002529A
Authority
GB
United Kingdom
Prior art keywords
styrene
acrylonitrile
polymerization
butadiene
rubber
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
GB4909563A
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.)
Dow Chemical Co
Original Assignee
Dow 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
Priority claimed from US247192A external-priority patent/US3278642A/en
Priority claimed from US247193A external-priority patent/US3267178A/en
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1002529A publication Critical patent/GB1002529A/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
    • C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
    • C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
    • 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
    • C08F291/00—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00
    • C08F291/02—Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds according to more than one of the groups C08F251/00 - C08F289/00 on to elastomers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Graft Or Block Polymers (AREA)

Abstract

Thermoplastic polymeric materials are made by polymerizing at least two monomeric materials having a reactivity ratio other than one in the presence of one or more rubbery polymers, by heating a solution containing up to 20% by weight of the rubbery polymer in at least a portion of the monomers to cause graft polymerization while subjecting the solution to shearing agitation sufficient to maintain the grafted rubbery polymer suspended in the prepolymer in the form of particles not greater than 10 microns in size, until the prepolymer contains from 20 to 50% by weight of solid, adding any remaining monomer, and then continuing the polymerization by heating and agitating the partially polymerized solution suspended in an inert medium, e.g. water, containing a dispersant. The rubber used is preferably a butadiene polymer, but may also be an acrylate or silicone rubber, an ethylene-propylene-diene terpolymer, polytetrahydrofuran, polypropylene oxide, an allyl glycidyl ether copolymer or a butylene rubber. Polymerization in the first stage may be effected thermally or by the use of a catalyst such as benzoyl or di-tert.-butyl peroxide. The suspending medium used in the second stage of polymerization is preferably water containing sodium carboxymethyl methylcellulose as a suspending agent. The examples describe polymerization processes in which the monomer mixtures consist of styrene and acrylonitrile; styrene, alpha-methyl styrene and acrylonitrile; styrene and methyl methacrylate; styrene, methyl methacrylate and either acrylonitrile or methacrylic acid; and acrylonitrile or methyl methacrylate and o-vinyltoluene, mixed m- and p-vinyl toluenes or p-chlorostyrene, the rubbers used being stereospecific polybutadiene, butadiene-styrene and butadiene-acrylonitrile rubbers, and a mixture of polybutadiene and a butadiene-acrylonitrile rubber.
GB4909563A 1962-12-26 1963-12-12 Polymerization process and products Expired GB1002529A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US247192A US3278642A (en) 1962-12-26 1962-12-26 Method of making interpolymers of monovinyl aromatic compounds, acrylonitrile and a rubber
US247193A US3267178A (en) 1962-12-26 1962-12-26 Method of making interpolymers of monovinyl aromatic compounds, methyl methacrylate and rubbery butadiene polymers

Publications (1)

Publication Number Publication Date
GB1002529A true GB1002529A (en) 1965-08-25

Family

ID=26938523

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4909563A Expired GB1002529A (en) 1962-12-26 1963-12-12 Polymerization process and products

Country Status (5)

Country Link
BE (1) BE641894A (en)
DE (1) DE1245131B (en)
FR (1) FR1386535A (en)
GB (1) GB1002529A (en)
NL (1) NL301879A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747823C2 (en) 1977-10-26 1985-08-14 Bayer Ag, 5090 Leverkusen Thermoplastic molding compounds
DE2747822C2 (en) 1977-10-26 1985-05-30 Bayer Ag, 5090 Leverkusen Thermoplastic molding compounds

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE492180A (en) * 1948-11-16
US2886553A (en) * 1957-04-01 1959-05-12 Monsanto Chemicals Process for the suspension polymerization of vinylidene aromatic hydrocarbons having rubbery conjugated 1, 3-diene polymers dissolved therein

Also Published As

Publication number Publication date
NL301879A (en)
FR1386535A (en) 1965-01-22
DE1245131B (en) 1967-07-20
BE641894A (en) 1964-06-29

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