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US3670051A Expired / Lapsed US ⏱️ 0.0 years remaining

Carbonate containing copolymerisation products and process for their production

Assignee: Bayer AG
•
Filing: 1970-01-28
•
Granted: 1972-06-13
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Expires: 1990-01-28
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Abstract

Abstract R is a hydrogen; halogen; a lower alkyl group having up to six carbon atoms; a phenyl group; a vinyl group; OF A MONOHYDRIC ALCOHOL CONTAINING THE HYDROCARBON RADICAL Y of those alcohols which contain up to about 18 carbon atoms including methanol, ethanol, propanol, isopropanol, butanol, isobutanol, hexanol, octanol, lauryl alcohol, stearyl alcohol and the like; OF A MONOCARBOXYLIC ACID CONTAINING THE HYDROCARBON RADICAL Z of acids including acetic, propionic, butyric, benzoic and the like acids; THE NITRILE GROUP -C*N or an alkyl ether group, preferably those containing up to octoxy eight carbon atoms including methoxy, ethoxy, allyloxy, hexoxy, ocotxy and the like; R'' is hydrogen, halogen, methyl or nitrile, R'''' is hydrogen or a lower alkyl group having up to about six carbon atoms, R'''''' is hydrogen, a lower alkyl group having up to about six carbon atoms, halogen, an hydroxy group or a phenolic radical which is bound directly or via a methylene group, an oxygen or sulphur atom, a sulphonyl or sulphoxide group, or a silane group, B is oxygen or an optionally nucleus-substituted phenoxy radical which may be linked to the benzene ring either directly or via a carbon, oxygen, sulphur or silicon atom, with the proviso that when t is 0, B is hydrogen, Ar1 is a bivalent, optionally nucleus-substituted aromatic radical which may contain a free hydroxy group, Ar2 is a monovalent, optionally nucleus-substituted aromatic radical, Q and Q'' are the endgroups of the copolymerizates as they are formed by the copolymerization reaction initiated by ionic catalysts or free radicals, G IS AN INTEGER BETWEEN ABOUT 9 AND ABOUT 1,000, M IS AN INTEGER FROM ABOUT 5 TO ABOUT 200, N IS AN INTEGER FROM 0 TO ABOUT 200, T IS 0 OR 1 AND P IS AN INTEGER FROM 1 TO ABOUT 15. These new polymers are especially useful in the production of thermal and hydrolysis resistant thermoplastic resins. New polymeric products are provided which correspond to the statistical formula

Inventors

  • 👤 Ferdinand Senge
  • 👤 Kurt Weirauch
  • 👤 Ludwig Bottenbruch

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 09:04
CPC Classifications
C; C08; C08F; C08F8/00

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 16 words
The polymeric compounds of claim 1 wherein A is hydrogen or methyl, A'' is hydrogen or
Claim 2
Dependent Claim 46 words
The polymeric compounds of claim 1 wherein A, A'', R'', R'''' and R'''''' are hydrogen, R is phenyl, B and Ar1 are the bis(4-phenylene)-isopropylidene radical, Ar2 is the p-tert.-butylphenyl radical, g is about 55, m+n equal about 55, t is 1 and p is about 3.
Claim 3
Dependent Claim 41 words
The polymeric compounds of claim 1 wherein A is methyl, A'', R'', R'''' and R'''''' are hydrogen, R is phenyl and -CN, Ar2 is p-tert.-butylphenyl, g is about 180, m+n equal about 100, t is 1 and p is about 2.
Claim 4
Dependent Claim 21 words
The polymeric compounds of claim 1 wherein A is methyl, A'', R'''' and R'''''' are hydrogen, R'' is hydrogen and methyl,
Claim 5
Dependent Claim 36 words
The polymeric compounds of claim 1 wherein A and R'' are methyl, A'', R'''' and R'''''' are hydrogen, Ar2 is p-tert.-butylphenyl, g is about 100, n+m equal 54, t is 1 and p is about 5.
Claim 6
Dependent Claim 43 words
The polymeric compounds of claim 1 wherein A is methyl, A'', R'', R'''', R'''''' and B are hydrogen, R is phenyl and -CN, Ar2 is p-tert.-butylphenyl, g is about 106, m is 130, n and t are 0 and p is about 3.
Claim 7
Dependent Claim 43 words
The polymeric compounds of claim 1 wherein A is methyl, A'', R'', R'''', R'''''' and B are hydrogen, R is phenyl, , Ar2 is p-tert.-butylphenyl, g Is about 42, m is about 75, n and t are 0 and p is about 2.
Claim 8
Dependent Claim 32 words
A method for preparing the polymeric compounds of claim 1 which comprises reacting a polycarbonate forming derivative of carbonic acid with a bivalent phenol, a monophenol and a copolymer having the formula
Claim 9
Dependent Claim 10 words
As a composition of matter polymeric compounds having the formula

References Cited (Backward Citations)

US3461187A Cited
US3506739A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-06-13 1975-12-13 1976-06-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-06-13 1979-12-13 1980-06-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-06-13 1983-12-13 1984-06-13 $7700.00 Window Closed / Lapsed

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