GB541720A - Improvements in the manufacture of filters - Google Patents

Improvements in the manufacture of filters

Info

Publication number
GB541720A
GB541720A GB9861/40A GB986140A GB541720A GB 541720 A GB541720 A GB 541720A GB 9861/40 A GB9861/40 A GB 9861/40A GB 986140 A GB986140 A GB 986140A GB 541720 A GB541720 A GB 541720A
Authority
GB
United Kingdom
Prior art keywords
gel
base material
filtering
medium
colloid
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
GB9861/40A
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.)
MAJOR CONRAD LAWRENCE WALSH
Original Assignee
MAJOR CONRAD LAWRENCE WALSH
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 MAJOR CONRAD LAWRENCE WALSH filed Critical MAJOR CONRAD LAWRENCE WALSH
Priority to GB9861/40A priority Critical patent/GB541720A/en
Publication of GB541720A publication Critical patent/GB541720A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0039—Inorganic membrane manufacture
    • B01D67/0048—Inorganic membrane manufacture by sol-gel transition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/14—Dynamic membranes
    • B01D69/141—Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Filtering Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

541,720. Filtering-media. BROWNE, R. J., and WALSH, C. L. June 5, 1940, No. 9861. [Class 46] A filtering-medium is prepared by impregnating base material with the gel of a vegetable colloid in alkaline solution and precipitating it as a gel in the base material. The colloid may be that extracted from agave, sisal and like plants as described in Specification 517,729. Any of the following may be used as base material:-sand, kieselguhr, filter aid, fibres, hair or cotton wool, silk combings or noils, paper, porous plates or compacted porous bodies. Acids or solutions of acid salts or neutral salts may be used as precipitants. Calcium hyperchlorite, sodium perborate and calcium chloride are mentioned in this connection. The permeability of.the medium may be varied by varying the concentrations of the gel and of the precipitant employed.
GB9861/40A 1940-06-05 1940-06-05 Improvements in the manufacture of filters Expired GB541720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9861/40A GB541720A (en) 1940-06-05 1940-06-05 Improvements in the manufacture of filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9861/40A GB541720A (en) 1940-06-05 1940-06-05 Improvements in the manufacture of filters

Publications (1)

Publication Number Publication Date
GB541720A true GB541720A (en) 1941-12-09

Family

ID=9880142

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9861/40A Expired GB541720A (en) 1940-06-05 1940-06-05 Improvements in the manufacture of filters

Country Status (1)

Country Link
GB (1) GB541720A (en)

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