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GB1005681A - Process for polymerizing a rubber-monomer solution - Google Patents

Process for polymerizing a rubber-monomer solution

Info

Publication number
GB1005681A
GB1005681A GB13235/63A GB1323563A GB1005681A GB 1005681 A GB1005681 A GB 1005681A GB 13235/63 A GB13235/63 A GB 13235/63A GB 1323563 A GB1323563 A GB 1323563A GB 1005681 A GB1005681 A GB 1005681A
Authority
GB
United Kingdom
Prior art keywords
polymerization
agitation
intensity
until
polymerizing
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
GB13235/63A
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.)
Monsanto Co
Original Assignee
Monsanto 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 Monsanto Co filed Critical Monsanto Co
Publication of GB1005681A publication Critical patent/GB1005681A/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

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

Polymeric materials of improved gloss/impact strength balance are made by polymerizing a solution of a rubbery polymer of a conjugated diene in a monovinyl aromatic hydrocarbon or halohyrocarbon, the polymerization being carried out in bulk, at least until phase inversion has occured, and wherein: (a) the agitation intensity is maintained at a level insufficient to cause any appreciable shearing of the rubber until phase inversion has occurred, (b) after phase inversion, the intensity of agitation is increased to a level sufficient to cause shearing of the particles of rubbery polymer and this intensity of agitation is maintained until the rubber particle size has been reduced to the desired degree, and (c) the agitation intensity is then decreased to a level insufficient to cause further shearing of the particles of rubbery polymer and is maintained at this level throughout the remainder of the reaction. The shear rate in the second stage of polymerization is preferably at least 1000 sec.-1. The examples describe forming a solution of a butadiene-styrene copolymer in styrene, polymerizing it in bulk until stage (b) of polymerization is complete, then transferring the mixture to an aqueous medium in which polymerization is completed in suspension.
GB13235/63A 1962-04-04 1963-04-03 Process for polymerizing a rubber-monomer solution Expired GB1005681A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18494462A 1962-04-04 1962-04-04
FR930465A FR1359953A (en) 1962-04-04 1963-04-04 Process for polymerizing a rubber containing monomer solution

Publications (1)

Publication Number Publication Date
GB1005681A true GB1005681A (en) 1965-09-29

Family

ID=26200635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13235/63A Expired GB1005681A (en) 1962-04-04 1963-04-03 Process for polymerizing a rubber-monomer solution

Country Status (2)

Country Link
FR (1) FR1359953A (en)
GB (1) GB1005681A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461188A (en) * 1965-08-23 1969-08-12 Monsanto Co Polyblends prepared by polymerizing vinyl monomers in the presence of cross-linked rubber
US3511895A (en) * 1966-04-01 1970-05-12 Union Carbide Corp Polymerization process and product thereof
FR2346381A1 (en) * 1976-03-29 1977-10-28 Basf Ag PROCESS FOR PREPARING MODIFIED STYRENE POLYMERS TO MAKE THEM RESISTANT TO IMPACT

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461188A (en) * 1965-08-23 1969-08-12 Monsanto Co Polyblends prepared by polymerizing vinyl monomers in the presence of cross-linked rubber
US3511895A (en) * 1966-04-01 1970-05-12 Union Carbide Corp Polymerization process and product thereof
FR2346381A1 (en) * 1976-03-29 1977-10-28 Basf Ag PROCESS FOR PREPARING MODIFIED STYRENE POLYMERS TO MAKE THEM RESISTANT TO IMPACT

Also Published As

Publication number Publication date
FR1359953A (en) 1964-04-30

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