GB1295149A – – Google Patents
GB1295149A – – Google Patents
Info
Publication number
GB1295149A
GB1295149A
GB1295149DA
GB1295149A
GB 1295149 A
GB1295149 A
GB 1295149A
GB 1295149D A
GB1295149D A
GB 1295149DA
GB 1295149 A
GB1295149 A
GB 1295149A
Authority
GB
United Kingdom
Prior art keywords
emulsion
reactor
styrene
reaction
elastomer
Prior art date
1969-12-23
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
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.)
1969-12-23
Filing date
1970-12-11
Publication date
1972-11-01
1970-12-11
Application filed
filed
Critical
1972-11-01
Publication of GB1295149A
publication
Critical
patent/GB1295149A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
Abstract
1295149 Graft polymers SOC ITALIANA RESINE SpA 11 Dec 1970 [23 Dec 1969] 59140/70 Heading C3G A process for the continuous manufacture in emulsion of graft polymers from vinyl monomers, alone or in mixture, comprises preparing an emulsion of the vinyl monomer or monomers in water, supplying the emulsion to a reactor in which the graft polymer is produced and to which is separately supplied the elastomer latex, the polymerization initiator and the other necessary additives, carrying out the polymerization reaction in the reactor, and separating the product of reaction. Preferred vinyl monomers are styrene, α-methyl styrene, nucleus substituted styrenes, acrylonitrile, methacrylonitrile, alkyl methacrylates such as methyl methacrylate, and alkyl acrylates which are used in such quantities that the water is present in the emulsion in the amount 30-70%, preferably 40-60%, by weight. The elastomer may be of natural or synthetic origin, e.g. polybutadiene, polyisoprene, styrene-butadiene copolymer, acrylonitrile-butadiene copolymer or an acrylic elastomer. The other substances present in the reaction may be added separately or mixed appropriately with the two main agents supplied. The initiators, emulsifiers, dispersion agents and modifiers used are conventional. The emulsifier may be used in an amount 1-5% by weight of the polymer. The polymerization reaction is preferably carried out in an inert atmosphere at temperatures between 50‹ to 80‹C. and more preferably 65‹ to 75‹ C. The process results in a graft polymer having a degree of grafting between 35 and 70%. In a preferred form graft polymers are produced by polymerizing in two or more reactors disposed in series, the second or subsequent reactor(s) acting as finishing vessel(s). Preferably the first reactor operates at a temperature between 65‹ and 75‹ C. with dwell times of 1-4 hours, while the second or subsequent reactors operate at a temperature of between 65‹ and 85‹ C. with a dwell time as required to produce less than 1% by weight non-reacted monomer content in the latex.
GB1295149D
1969-12-23
1970-12-11
Expired
GB1295149A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
IT2620769
1969-12-23
Publications (1)
Publication Number
Publication Date
GB1295149A
true
GB1295149A
(en)
1972-11-01
Family
ID=11218940
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1295149D
Expired
GB1295149A
(en)
1969-12-23
1970-12-11
Country Status (7)
Country
Link
CH
(1)
CH533140A
(en)
DE
(1)
DE2062311C2
(en)
ES
(1)
ES386719A1
(en)
FR
(1)
FR2074118A5
(en)
GB
(1)
GB1295149A
(en)
NL
(1)
NL160005C
(en)
YU
(1)
YU33978B
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
IT1007901B
(en)
*
1974-04-12
1976-10-30
Montedison Spa
PROCEDURE FOR THE PRODUCTION OF IMPACT RESISTANT POLYSTEROL
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE1252902B
(en)
*
1963-07-30
1967-10-26
Bayer Ag
Process for the production of graft polymers
GB1237293A
(en)
*
1968-04-05
1971-06-30
Amf Inc
Polymerization improvements
1970
1970-12-11
GB
GB1295149D
patent/GB1295149A/en
not_active
Expired
1970-12-17
DE
DE19702062311
patent/DE2062311C2/en
not_active
Expired
1970-12-17
YU
YU310170A
patent/YU33978B/en
unknown
1970-12-18
NL
NL7018499A
patent/NL160005C/en
not_active
IP Right Cessation
1970-12-18
CH
CH1887370A
patent/CH533140A/en
not_active
IP Right Cessation
1970-12-21
FR
FR7046101A
patent/FR2074118A5/fr
not_active
Expired
1970-12-22
ES
ES386719A
patent/ES386719A1/en
not_active
Expired
Also Published As
Publication number
Publication date
DE2062311C2
(en)
1982-04-29
YU33978B
(en)
1978-09-08
YU310170A
(en)
1978-02-28
FR2074118A5
(en)
1971-10-01
DE2062311A1
(en)
1971-07-01
CH533140A
(en)
1973-01-31
ES386719A1
(en)
1973-03-16
NL160005C
(en)
1979-09-17
NL7018499A
(en)
1971-06-25
NL160005B
(en)
1979-04-17
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Legal Events
Date
Code
Title
Description
1973-03-21
PS
Patent sealed
1975-04-23
435
Patent endorsed ‘licences of right’ on the date specified (sect. 35/1949)
1984-08-15
PCNP
Patent ceased through non-payment of renewal fee
