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US4245064A Expired / Lapsed US ⏱️ 0.0 years remaining

Activated solid carrier and a method of its preparation

Assignee: Czech Academy of Sciences
•
Filing: 1979-02-12
•
Granted: 1981-01-13
•
Expires: 1999-02-12
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Abstract

Abstract The invention relates to a solid insoluble carrier which is activated for bonding of nucleophilic groups and to a method of its preparation. The carrier contains active groups --O.CO.O.R, where R is the residue selected from the group comprising nitrophenyl, dinitrophenyl, trichlorophenyl, pentachlorophenyl, N-succinimidyl, N-phthalimidyl, and 8-quinolinyl. Active groups are bonded to polysaccharides, phenol-formaldehyde resins, polyacrylates, or polyacrylamides. The invention further relates to a method for preparation of the polymeric carrier, which consists in treatment of polymers carrying hydroxyl functions and selected from the group comprising polysaccharides, phenol-formaldehyde resins, polyacrylates, and polyacrylamides, with esters of chloroformic acid which contain the above mentioned active groups.

Inventors

  • 👤 Jaroslav Drobnik
  • 👤 Jaroslav Kalal
  • 👤 Jiri Labsky
  • 👤 Vladimir Saudek
  • 👤 Frantisek Svec

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 21:26
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/14; C08B37/00; C08B37/0006; C08B37/0036; C08B37/0039; C08F; C08F8/00; C08F8/14; C12; C12N; C12N11/00; C12N11/02; C12N11/08; C12N11/082; C12N11/087; C12N11/089; C12N11/091; C12N11/10; C08F2810/00; C08F2810/20

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 63 words
A polymeric carrier containing hydroxyl groups which have been activated for bonding of nucleophilic groups, wherein this carrier is selected from the group comprising polysaccharides, phenol-formaldehyde resins, polyacrylates, polymethacrylates and polyacrylamides contains active groups of the general formula I --O.CO.OR.sub.1 , (I) where R 1 is the residue selected from the group comprising 4-nitrophenyl, 2,4-dinitrophenyl, 2,4,6-trichlorophenyl, 2,4,5- trichlorophenyl, pentachlorophenyl, N-succinimidyl, N-phthalimidyl and 8-quinolinyl.
Claim 2
Dependent Claim 63 words
A polymeric carrier containing hydroxyl groups which have been activated for bonding of nucleophilic groups, wherein this carrier is selected from the group comprising polysaccharides, phenol-formaldehyde resins, polyacrylates, polymethacrylates and polyacrylamides contains active groups of the general formula I --O.CO.OR.sub.1 , (I) where R 1 is the residue selected from the group comprising 4-nitrophenyl, 2,4-dinitrophenyl, 2,4,6-trichlorophenyl, 2,4,5- trichlorophenyl, pentachlorophenyl, N-succinimidyl, N-phthalimidyl and 8-quinolinyl.
Claim 3
Dependent Claim 22 words
The polymeric carrier as set forth in claim 1, wherein the active groups of the general formula I are bonded to polysaccharides.
Claim 4
Dependent Claim 59 words
The polymeric carrier as set forth in claim 1, wherein the active groups of general formula I are bonded to polyacrylates, polymethacrylates of the general formula II or polyacrylamides ##STR1## where X is hydrogen atom or CH 3 , Y is --NH-- or oxygen atom, and Z is mono- or dihyroxyalkyl, while alkyl contains 2 to 3 carbon atoms.
Claim 5
Dependent Claim 20 words
The polymeric carrier as set forth in claim 1, wherein said carrier is a polysaccharide and R 1 is 4-nitrophenyl.

References Cited (Backward Citations)

US3705890A Cited
US3879353A Cited
US3959078A Cited
US4090919A Cited
US4101721A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-01-13 1984-07-14 1985-01-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-01-13 1988-07-14 1989-01-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-01-13 1992-07-14 1993-01-13 $7700.00 Window Closed / Lapsed

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