GB1350612A - Depolymerisation of acrylic polymers - Google Patents

Depolymerisation of acrylic polymers

Info

Publication number
GB1350612A
GB1350612A GB3332671A GB3332671A GB1350612A GB 1350612 A GB1350612 A GB 1350612A GB 3332671 A GB3332671 A GB 3332671A GB 3332671 A GB3332671 A GB 3332671A GB 1350612 A GB1350612 A GB 1350612A
Authority
GB
United Kingdom
Prior art keywords
july
molten metal
acrylic
surface
alkyl esters
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
GB3332671A
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.)
Rohm and Haas Co
Original Assignee
Rohm and Haas 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 to US5522470A priority Critical
Application filed by Rohm and Haas Co filed Critical Rohm and Haas Co
Publication of GB1350612A publication Critical patent/GB1350612A/en
Application status is Expired legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/30—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
    • C07C67/333—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by isomerisation; by change of size of the carbon skeleton

Abstract

1350612 Alkyl esters of acrylic acids ROHM & HAAS CO 15 July 1971 [15 July 1970] 33326/71 Heading C2C Alkyl esters of acrylic and/or alpha alkyl substituted acrylic acid esters are prepared by depolymerizing the corresponding polymers by contacting with a constantly renewed surface of a hot molten metal in an inert atmosphere. The molten metal may be lead, tin or cadmium at 400‹ C., and the surface is mechanically agitated. The monomer vapours are condensed in a concurrent or countercurrent condenser with partial recycling. Examples describe the treatment of polymethyl methacrylate.
GB3332671A 1970-07-15 1971-07-15 Depolymerisation of acrylic polymers Expired GB1350612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US5522470A true 1970-07-15 1970-07-15

Publications (1)

Publication Number Publication Date
GB1350612A true GB1350612A (en) 1974-04-18

Family

ID=21996484

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3332671A Expired GB1350612A (en) 1970-07-15 1971-07-15 Depolymerisation of acrylic polymers

Country Status (4)

Country Link
DE (1) DE2132716A1 (en)
FR (1) FR2101684A5 (en)
GB (1) GB1350612A (en)
NL (1) NL7109686A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995017360A1 (en) * 1993-12-23 1995-06-29 Molten Metal Technology, Inc. Method for producing unsaturated organics from organic-containing feeds
US5629464A (en) * 1993-12-23 1997-05-13 Molten Metal Technology, Inc. Method for forming unsaturated organics from organic-containing feed by employing a Bronsted acid
US5640707A (en) * 1993-12-23 1997-06-17 Molten Metal Technology, Inc. Method of organic homologation employing organic-containing feeds
US6258988B1 (en) 1993-12-23 2001-07-10 Quantum Catalytics, L.L.C. Method for reforming organics into shorter-chain unsaturated organic compounds

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425323C2 (en) 1994-07-18 2000-06-08 Roehm Gmbh A method for producing a sanitary article fed behind
DE102009027658A1 (en) 2009-07-13 2011-04-28 Evonik Röhm Gmbh Ultralight and highly impact-resistant plate, useful e.g. as facade components, preferably claddings, comprises acrylic glass, obtainable by polymerizing composition of polymerizable (meth)acrylate system by chamber- or Rostero process

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995017360A1 (en) * 1993-12-23 1995-06-29 Molten Metal Technology, Inc. Method for producing unsaturated organics from organic-containing feeds
US5543558A (en) * 1993-12-23 1996-08-06 Molten Metal Technology, Inc. Method for producing unsaturated organics from organic-containing feeds
US5629464A (en) * 1993-12-23 1997-05-13 Molten Metal Technology, Inc. Method for forming unsaturated organics from organic-containing feed by employing a Bronsted acid
US5640707A (en) * 1993-12-23 1997-06-17 Molten Metal Technology, Inc. Method of organic homologation employing organic-containing feeds
US6258988B1 (en) 1993-12-23 2001-07-10 Quantum Catalytics, L.L.C. Method for reforming organics into shorter-chain unsaturated organic compounds
USRE42832E1 (en) 1993-12-23 2011-10-11 Quantum Catalytics, L.L.C. Method for reforming organics into shorter-chain unsaturated organic compounds

Also Published As

Publication number Publication date
FR2101684A5 (en) 1972-03-31
DE2132716A1 (en) 1972-01-27
NL7109686A (en) 1972-01-18

Similar Documents

Publication Publication Date Title
CA957156A (en) Process for neutralization and regeneration of aqueous solutions of acids and dissolved metals
RO62643A (en) Process for the preparation of dissymetric esters of 1,4-dihydropyridin-3,5-dicarboxylic acid
AU5300179A (en) Solvent polymerization of unsaturated carboxylic acid monomers
DE2238295B2 (en) A method for preventing the polymerization of acrylic and methacrylic esters during distillation of the
GB1339930A (en) Polymeric materials and dispersions containing them
JPS57198714A (en) Production of hydrogel
CA1001344A (en) Polymerization process using an ester ramifying agent and polymers therefrom
EP0264508A1 (en) Process for the production of heat resistant thermoplastic copolymer
YU36029B (en) Process for obtaining 6-(d(-)-alfa-aminophenylacetamido) penicillanic acid phthalide ester
NL177119B (en) A process for the preparation of an aqueous latex comprising a copolymer of vinylidene chloride, vinyl chloride, one or more acrylic monomers and one or more alpha-beta unsaturated aliphatic carboxylic acids, and molded articles with metal substrates, which are with the aid of the thus-prepared latex of a coating to provide.
CA959197A (en) Process for recovering polymers from organic solutions
GB1313265A (en) Perfluoroalkylalkylmonocarboxylic acid esters their polymerisation
GB1281457A (en) Sterilisation of tissue binding adhesives
CA988452A (en) Electrodeposition of bright acid tin
JPS5263989A (en) Process for producing imidized acrylic acid polymer
GB1473934A (en) Steel making
DE2143391B2 (en) A process for the extraction of molybdic acid esters
GB859507A (en) Stabilized acrylonitrile polymers
JPS53102990A (en) Emulsifying process for producing copolymer consisting of alpha and betaaunsaturated carboxylic acid and methylacrylate
GB951285A (en) Polymer modification process
BE778656A (en) window frame-shaped light metal profile or plastic
CH558389A (en) A process for the preparation of bead polymers of acrylic acid and their use.
SE7811635A (en) Process for the tell up of 7 -acylamino-7 -alkoxicefalosporiner or 6 -acylamino-6 -alkoxipenicilliner
DE2001450A1 (en) A-to-use in connection with the smelting of sulphide ores method
DE2040546B (en) Aqueous solution of an aliphatic carboxylic acid for the removal of deposits or ocherings

Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
PS Patent sealed
414E Application relinquished (sect. 14/1949)
CSNS Application of which complete specification have been accepted and published, but patent is not sealed