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US3687895A Expired / Lapsed US ⏱️ 0.0 years remaining

Polymers from unsaturated carbonate esters of phenolic compounds

Assignee: Bayer AG
•
Filing: 1970-10-26
•
Granted: 1972-08-29
•
Expires: 1990-10-26
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Abstract

Abstract The new polymeric compounds corresponding to the statistical formula WHEREIN A is hydrogen or a methyl group, X is halogen or a methyl group, Ar1 is a bivalent aromatic radical which may or may not contain substitutents on the nucleus, Ar2 is a monovalent aromatic radical which may or may not be substituted on the nucleus or it may be the same as Ar1 but having an -OH group attached to one of the arylene valences; m is 0 or 1; n is 0 or 1; o is 0, 1 or 2; p is an integer of from about 5 to about 100; q is 1 or 2; r is an integer of from about 5 to about 1,000; g is a number of from about 5 to about 200; R'' is hydrogen or a methyl group; R is hydrogen, halogen, lower alkyl, ayrl, a carboxylic acid or a ester group of a monohydric alcohol, the amide or nitrile group, an ester group of a monocarboxylic acid or an alkoxy group, are the subjects of this application.

Inventors

  • 👤 Hugo Vernaleken
  • 👤 Georg Malamet
  • 👤 Ludwig Bottenbruch
  • 👤 Heinrich Krimm
  • 👤 Hermann Schnell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 16:01
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/18; C08F; C08F8/00; C08F8/14; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/50

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 8 words
The polymer of claim 1 having the formula:
Claim 2
Dependent Claim 17 words
The polymer of claim 1 wherein the Ar1 is a 2,2-bis-(4-hydroxyphenyl)propane, a,a''-bis-(p-hydroxyphenyl)-p-diisopropyl benzene, 1,1-bis-(4-hydroxyphenyl)-cyclohexane or 2,2-(bis-3,5-dichloro-4-hydroxyphenyl)propane radical.
Claim 3
Dependent Claim 15 words
The polymer of claim 1 wherein Ar2 radical is phenyl, p-tertiary butyl phenyl or 2,6-dichlorophenyl.
Claim 4
Dependent Claim 17 words
The polymer of claim 1 wherein R is a carboxymethyl, phenyl, nitrile, carboxybutyl or an N-methoxymethylamide radical.
Claim 5
Dependent Claim 26 words
A method for preparing the polymer of claim 1 which comprises forming a prepolymer by copolymerizing an ethylenically unsaturated monomer with a phenol having the formula
Claim 6
Dependent Claim 11 words
The method of claim 6 wherein the phenol has the formula:
Claim 7
Dependent Claim 16 words
The method of claim 6 wherein the resulting prepolymer is also reacted with a monovalent phenol.

References Cited (Backward Citations)

US3271367A Cited
US3356651A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-08-29 1976-02-28 1976-08-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-08-29 1980-02-28 1980-08-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-08-29 1984-02-28 1984-08-29 $7700.00 Window Closed / Lapsed

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