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Amino acid derivatives of chloromethylated polymers and methods of making the same

Assignee: OI Glass Inc
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Filing: 1973-05-24
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Granted: 1976-07-13
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Expires: 1993-05-24
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Abstract

Abstract The application discloses polymers and methods of making same in which a chlorine atom of a chloromethyl pendant group of a polymer such as a chloromethylated copolymer of styrene and divinylbenzene is substituted with a derivative of malonic acid having a protected amino group on the alpha-carbon atom and two carboxyl groups or precursors thereof to form, via several steps, the alpha-amino acid derivative of the starting polymer. These polymers are used, for instance, as ion exchange resins, as substrates for affinity chromotography, and as a starting resin for solid peptide synthesis. The resultant polymer is also used as a starting material to make a polymer with a pendant group that is a derivative of oxazolidone-2,5-dione, substituted at the 4-position. These polymers are used, for example, as the matrix for solid phase peptide synthesis and as the starting resin for solid phase peptide degradation.

Inventors

  • 👤 Don N. Gray

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 21:57
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 41 words
A resinous polymer consisting essentially of recurring units in its molecular formula as follows: ##EQU10## where R is H or a metal that is the residue of the reaction of a base with a carboxyl group to form the acid salt.
Claim 2
Dependent Claim 41 words
A resinous polymer consisting essentially of recurring units in its molecular formula as follows: ##EQU10## where R is H or a metal that is the residue of the reaction of a base with a carboxyl group to form the acid salt.
Claim 3
Dependent Claim 12 words
A polymer as defined in claim 1 in which R is H.
Claim 4
Dependent Claim 12 words
A polymer as defined in claim 1 in which R is Na.
Claim 5
Dependent Claim 29 words
A polymer as defined in claim 1 in which the main molecular chain is one of a copolymer of styrene and about 4% to 6% by weight of divinylbenzene.
Claim 6
Dependent Claim 29 words
A polymer as defined in claim 1 in which the main molecular chain is one of a copolymer of styrene and about 1 - 8% by weight of divinylbenzene.

References Cited (Backward Citations)

GB767821A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-07-13 1980-01-12 1980-07-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-07-13 1984-01-12 1984-07-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-07-13 1988-01-12 1988-07-13 $7700.00 Window Closed / Lapsed

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