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US3923762A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for preparation of 2-anthryl and substituted 2-anthryl functional monomers and polymers

Assignee: Xerox Corp
•
Filing: 1974-02-25
•
Granted: 1975-12-02
•
Expires: 1994-02-25
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Abstract

Abstract Process for preparation of 2-anthryl and substituted 2-anthryl functional monomers and polymers. In the process for preparation of these monomers, an anthracenic reactant of the formula: WHEREIN X and Y are independently selected from hydrogen, chlorine, bromine, alkyl of 1 to 4 carbon atoms or phenyl is acylated in nitrobenzene under conditions which favor reaction at the two position. The resulting acylated product can then be (a) reacted with an alkylidenephosphorane (Wittig synthesis) or (b) reduced to the corresponding alcohol. Subsequent to such reduction, this alcohol can undergo further modification at the hydroxyl function to form a polymerizable addition monomer. Through the proper selection of the relative concentration of reactants and control over processing conditions, it is possible not only to prepare such monomers in high yields but also upon polymerization of such monomers, to obtain high molecular weight 2-anthryl and substituted 2-anthryl functional polymers (molecular weight of at least 104). Polymers of such high molecular weight can readily be formed without the use of binders into self-supporting films. Such films are intrinsically photoconductive in the ultraviolet region of the electromagnetic spectrum and have good transport capabilities for charge carriers of both polarities.

Inventors

  • 👤 Milan Stolka
  • 👤 James M Pearson
  • 👤 John F Yanus

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 15:38
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/071; C; C07; C07C; C07C1/00; C07C1/32; C07C1/34; C07C15/00; C07C15/40; C07C15/56; C07C15/60; C08; C08F; C08F12/00; C08F12/02; C08F12/32; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/16; C08F20/18; C08F20/22; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 18 words
AN ANTHRACENIC POLYMER SEGMENT CONSISTING ESSENTIALLY OF THE ADDITION PRODUCT OF AT LEAST ONE MONOMER OF THE FORMULA
Claim 2
Dependent Claim 18 words
AN ANTHRACENIC POLYMER SEGMENT CONSISTING ESSENTIALLY OF THE ADDITION PRODUCT OF AT LEAST ONE MONOMER OF THE FORMULA
Claim 3
Dependent Claim 18 words
An anthracenic polymer segment consisting essentially of the addition product of at least one monomer of the formula
Claim 4
Dependent Claim 18 words
An anthracenic polymer segment consisting essentially of the addition product of at least one monomer of the formula
Claim 5
Dependent Claim 15 words
In a free radical initiated addition polymerization of at least one monomer of the formula
Claim 6
Dependent Claim 15 words
In a free radical initiated addition polymerization of at least one monomer of the formula
Claim 7
Dependent Claim 14 words
In a cationic initiated addition polymerization of at least one monomer of the formula
Claim 8
Dependent Claim 14 words
In a cationic initiated addition polymerization of at least one monomer of the formula
Claim 9
Dependent Claim 14 words
In an anionic initiated addition polymerization of at least one monomer of the formula
Claim 10
Dependent Claim 14 words
In an anionic initiated addition polymerization of at least one monomer of the formula
Claim 11
Dependent Claim 15 words
In a free radical initiated addition polymerization of at least one monomer of the formula
Claim 12
Dependent Claim 15 words
In a free radical initiated addition polymerization of at least one monomer of the formula

References Cited (Backward Citations)

US2749321A Cited
US3116271A Cited
US3316087A Cited
US3164576A Cited
US3361726A Cited
US3409589A Cited
US3705136A Cited
US3764590A Cited
US3725505A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-12-01 1979-06-02 1979-12-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-12-01 1983-06-02 1983-12-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-12-01 1987-06-02 1987-12-02 $7700.00 Window Closed / Lapsed

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