GB462511A - Improvements in apparatus for carrying out the synthesis of resins from glycerol and phthalic acid - Google Patents

Improvements in apparatus for carrying out the synthesis of resins from glycerol and phthalic acid

Info

Publication number
GB462511A
GB462511A GB1807736A GB1807736A GB462511A GB 462511 A GB462511 A GB 462511A GB 1807736 A GB1807736 A GB 1807736A GB 1807736 A GB1807736 A GB 1807736A GB 462511 A GB462511 A GB 462511A
Authority
GB
United Kingdom
Prior art keywords
outlet pipe
downwardly
upwardly
unions
elbow
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
GB1807736A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1807736A priority Critical patent/GB462511A/en
Publication of GB462511A publication Critical patent/GB462511A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78—Preparation processes
    • C08G63/785—Preparation processes characterised by the apparatus used

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

To prevent deposition of phthalic anhydride in the outlet pipe 3 of a reaction vessel 1 in which synthetic resins are being synthesized from glycerol and phthalic acid, the outlet pipe is heated and the vapours pass to a collecting vessel 4 before flowing upwardly to a direct contact spray condenser 8 wherein the phthalic anhydride is precipitated as a sludge which is withdrawn from the collecting vessel by a pump 6. The reaction vessel is maintained under vacuum by means of a pump 12 which is connected through pipes 11, 9 and elbow 10 with the upper end of the condenser. The latter is provided with axially mounted jets connected to unions 14, 15 and 16, the sprays of water from these unions being directed upwardly, upwardly and downwardly, and downwardly respectively. The union 16 may also supply <PICT:0462511/IV/1> water to a jet directed along the horizontal pipe 9; an additional jet may also be provided in the elbow 10 directed downwardly into the vertical pipe 11. The outlet pipe 3 may be heated electrically or by a steam jacket Specification 444,889 is referred to.ALSO:<PICT:0462511/III/1> To prevent deposition of phthalic anhydride in the outlet pipe 3 of a reaction vessel 1 in which synthetic resins are being synthesized from glycerol and phthalic acid, the outlet pipe is heated and the vapours pass to a collecting vessel 4 before flowing upwardly to a direct contact spray condenser 8 wherein the phthalic anhydride is precipitated as a sludge which is withdrawn from the collecting vessel by a pump 6. The reaction vessel is maintained under vacuum by means of a pump 12 which is connected through pipes 11, 9 and elbow 10 with the upper end of the condenser. The latter is provided with axially mounted jets connected to unions 14, 15 and 16, the sprays of water from these unions being directed upwardly, upwardly and downwardly, and downwardly respectively. The union 16 may also supply water to a jet directed along the horizontal pipe 9; an additional jet may also be provided in the elbow 10 directed downwardly into the vertical pipe 11. The outlet pipe 3 may be heated electrically or by a steam jacket. Specification 444,889, [Group IV], is referred to.
GB1807736A 1936-06-30 1936-06-30 Improvements in apparatus for carrying out the synthesis of resins from glycerol and phthalic acid Expired GB462511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1807736A GB462511A (en) 1936-06-30 1936-06-30 Improvements in apparatus for carrying out the synthesis of resins from glycerol and phthalic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1807736A GB462511A (en) 1936-06-30 1936-06-30 Improvements in apparatus for carrying out the synthesis of resins from glycerol and phthalic acid

Publications (1)

Publication Number Publication Date
GB462511A true GB462511A (en) 1937-03-10

Family

ID=10106253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1807736A Expired GB462511A (en) 1936-06-30 1936-06-30 Improvements in apparatus for carrying out the synthesis of resins from glycerol and phthalic acid

Country Status (1)

Country Link
GB (1) GB462511A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892813A (en) * 1954-03-23 1959-06-30 Pittsburgh Plate Glass Co Conservation of dihydric alcohol in the preparation of polyesters by application of water to the vapors from the reaction
US2993029A (en) * 1958-10-03 1961-07-18 Pittsburgh Plate Glass Co Conserving dihydric alcohol in the preparation of polyesters
US4045392A (en) * 1975-03-11 1977-08-30 E. I. Du Pont De Nemours And Company Alkyd resin manufacturing process by using water or steam to reverse or retard gelation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892813A (en) * 1954-03-23 1959-06-30 Pittsburgh Plate Glass Co Conservation of dihydric alcohol in the preparation of polyesters by application of water to the vapors from the reaction
US2993029A (en) * 1958-10-03 1961-07-18 Pittsburgh Plate Glass Co Conserving dihydric alcohol in the preparation of polyesters
US4045392A (en) * 1975-03-11 1977-08-30 E. I. Du Pont De Nemours And Company Alkyd resin manufacturing process by using water or steam to reverse or retard gelation

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