GB1350612A - Depolymerisation of acrylic polymers - Google Patents
Depolymerisation of acrylic polymersInfo
- 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
- depolymerisation
- 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
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5522470A | 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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4425323C2 (en) | 1994-07-18 | 2000-06-08 | Roehm Gmbh | Process for the production of a back-lined sanitary article |
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 |
-
1971
- 1971-07-01 DE DE19712132716 patent/DE2132716A1/en active Pending
- 1971-07-13 FR FR7125753A patent/FR2101684A5/fr not_active Expired
- 1971-07-13 NL NL7109686A patent/NL7109686A/xx unknown
- 1971-07-15 GB GB3332671A patent/GB1350612A/en not_active Expired
Cited By (6)
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 |
---|---|
DE2132716A1 (en) | 1972-01-27 |
FR2101684A5 (en) | 1972-03-31 |
NL7109686A (en) | 1972-01-18 |
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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 |