GB1422827A - Polymerization process and vinylidene chloride copolymer micros pheres produced thereby - Google Patents

Polymerization process and vinylidene chloride copolymer micros pheres produced thereby

Info

Publication number
GB1422827A
GB1422827A GB3259273A GB3259273A GB1422827A GB 1422827 A GB1422827 A GB 1422827A GB 3259273 A GB3259273 A GB 3259273A GB 3259273 A GB3259273 A GB 3259273A GB 1422827 A GB1422827 A GB 1422827A
Authority
GB
United Kingdom
Prior art keywords
vinylidene chloride
blowing agent
acrylonitrile
parts
produced
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
GB3259273A
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
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1422827A publication Critical patent/GB1422827A/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
    • C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
    • C08F214/02—Monomers containing chlorine
    • C08F214/04—Monomers containing two carbon atoms
    • C08F214/08—Vinylidene chloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/06—Making microcapsules or microballoons by phase separation
    • B01J13/14—Polymerisation; cross-linking
    • B01J13/18—In situ polymerisation with all reactants being present in the same phase
    • B01J13/185—In situ polymerisation with all reactants being present in the same phase in an organic phase

Abstract

1422827 Production of foamable vinylidene chloride/acrylonitrile copolymers DOW CHEMICAL CO 9 July 1973 [10 July 1972] 32592/73 Heading C3P Microspheres comprising a blowing agent encapsulated by a polymer are produced by a process which comprises polymerizing 60-90 parts by wt. of vinylidene chloride and 40-10 parts by wt. of acrylonitrile mixed with a liquid volatile blowing agent, all dispersed as an oil in water emulsion with a dispersion stabilizer, as droplets of diameter 1-50 microns, to form particles comprising said encapsulated blowing agent, characterized in that 3-12 parts by wt. of a further monomer is present, having a propagation constant of 2-15,000 litres/mole/see. and where r 1 is the reactivity ratio for the further comonomer and r 2 is the reactivity ratio for acrylonitrile, with the further proviso that the vinylidene chloride/acrylonitrile/blowing agent are mutually soluble at between 20 and 90‹ C. The further monomer may be selected from methacrylonitrile, 1 - acetoxy - 1,3 - butadiene, acetoxy styrene, acrolein, acrylamide, acrylic acid, allyl alcohol, butadiene methacrolein, or mixtures thereof. Suitable blowing agents are butane, isobutane, neopentane and mixtures thereof.
GB3259273A 1972-07-10 1973-07-09 Polymerization process and vinylidene chloride copolymer micros pheres produced thereby Expired GB1422827A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27029672A 1972-07-10 1972-07-10

Publications (1)

Publication Number Publication Date
GB1422827A true GB1422827A (en) 1976-01-28

Family

ID=23030737

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3259273A Expired GB1422827A (en) 1972-07-10 1973-07-09 Polymerization process and vinylidene chloride copolymer micros pheres produced thereby

Country Status (9)

Country Link
JP (1) JPS4959168A (en)
AU (1) AU466762B2 (en)
BE (1) BE802003A (en)
CA (1) CA1002700A (en)
DE (1) DE2330060A1 (en)
FR (1) FR2192125B1 (en)
GB (1) GB1422827A (en)
IT (1) IT989790B (en)
NL (1) NL7309233A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151231A (en) * 1983-12-13 1985-07-17 Asahi Chemical Ind Vinylidene chloride copolymer expandable particles & in-mold foam molding by use thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597839B1 (en) * 1986-04-25 1989-05-26 Delamare & Cie Pierre NEW PROTECTIVE PACKAGING FOR THE TRANSPORT AND STORAGE OF OBJECTS
US5139153A (en) * 1986-04-25 1992-08-18 Establissements Pierre Delamare Et Cie Device for holding objects and protecting them against shocks
JP6534834B2 (en) * 2015-03-12 2019-06-26 松本油脂製薬株式会社 Thermally expandable microspheres, method for producing the same and use thereof
CN108084347B (en) * 2018-01-08 2020-08-04 河北工业大学 Preparation method of shape-controllable yolk-eggshell structure composite particles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151231A (en) * 1983-12-13 1985-07-17 Asahi Chemical Ind Vinylidene chloride copolymer expandable particles & in-mold foam molding by use thereof

Also Published As

Publication number Publication date
CA1002700A (en) 1976-12-28
FR2192125B1 (en) 1976-05-28
AU466762B2 (en) 1975-11-06
AU5643773A (en) 1974-12-05
IT989790B (en) 1975-06-10
BE802003A (en) 1974-01-07
NL7309233A (en) 1974-01-14
JPS4959168A (en) 1974-06-08
FR2192125A1 (en) 1974-02-08
DE2330060A1 (en) 1974-01-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee