US3872057A
Expired / Lapsed
US
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Polymers coupled by nitroso groups
Assignee: EIDP Inc
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Filing: 1973-02-02
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Granted: 1975-03-18
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Expires: 1993-02-02
Abstract
Abstract Compounds, preferably oligomers or polymers, are nitrosated to provide at least two nitroso groups on the average per molecule. At ambient temperatures the molecules couple by dimerization of the nitroso groups to modify the properties. At higher temperatures the nitroso dimer groupings dissociate so that the composition can be melt fabricated. Melt-compatible blends of different compounds can also be employed as the precursor materials.
Inventors
- 👤 Jose F Pazos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:43
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/22; C08F; C08F8/00; C08F8/30; C08G; C08G85/00; C08G85/004; C08F2800/00; C08F2800/10; C08F2800/20; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
69 words
A NITROSATED PRECURSOR COMPOUND CONTAINING AN AVERAGE OF AT LEAST TWO C-NITROSO GROUPS PER MOLECULE SAID NITROSO GROUP BEING ATTACHED TO AN ALIPHATIC CARBON ATOM OR TO AN AROMATIC RING CONTAINING TWO ORTHO SUBSTITUENTS OF LOWER ALKYL, LOWER ALKOXYCARBONYL OR CHLORINE AND JOINED BY A CARBONYL LINKAGE AND AT LEAST TWO OF WHICH ARE SEPARATED FROM THE NEAREST NITROSO GROUP BY AT LEAST SIX ATOMS, SAID PRECURSOR COMPOUND BEING
Claim 2
Dependent Claim
69 words
A NITROSATED PRECURSOR COMPOUND CONTAINING AN AVERAGE OF AT LEAST TWO C-NITROSO GROUPS PER MOLECULE SAID NITROSO GROUP BEING ATTACHED TO AN ALIPHATIC CARBON ATOM OR TO AN AROMATIC RING CONTAINING TWO ORTHO SUBSTITUENTS OF LOWER ALKYL, LOWER ALKOXYCARBONYL OR CHLORINE AND JOINED BY A CARBONYL LINKAGE AND AT LEAST TWO OF WHICH ARE SEPARATED FROM THE NEAREST NITROSO GROUP BY AT LEAST SIX ATOMS, SAID PRECURSOR COMPOUND BEING
Claim 3
Dependent Claim
34 words
ORGANIC MONOMERS OR POLYMERS MELT FABRICABLE BELOW 200*C; OR II. A MELT-COMPATIBLE BLEND OF SAID MONOMERS OF POLYMERS, SAID NITROSATED PRECURSOR COMPOUNDS COUPLING TO POLYMERS AT AMBIENT TEMPERATURE BY DIMERIZATION OF SAID NITROSO GROUPS.
Claim 4
Dependent Claim
34 words
ORGANIC MONOMERS OR POLYMERS MELT FABRICABLE BELOW 200*C; OR II. A MELT-COMPATIBLE BLEND OF SAID MONOMERS OF POLYMERS, SAID NITROSATED PRECURSOR COMPOUNDS COUPLING TO POLYMERS AT AMBIENT TEMPERATURE BY DIMERIZATION OF SAID NITROSO GROUPS.
Claim 5
Dependent Claim
13 words
Composition of claim 1 wherein said nitrosated precursor compound is a nitrosated polyurethane.
Claim 6
Dependent Claim
25 words
Composition of claim 2 wherein said nitrosated polyurethane is obtained by reaction of hexamethylenediisocyanate with a nitroalcohol and subsequent reduction of the nitrogroup to nitrosogroup.
Claim 7
Dependent Claim
9 words
Composition of claim 3 wherein said nitroalcohol is 2-methyl-2-nitro-1-propanol.
Claim 8
Dependent Claim
12 words
Composition of claim 1 wherein said nitrosated precursor compound has the formula:
Claim 9
Dependent Claim
8 words
Composition of claim 5 wherein X is Cl.
Claim 10
Dependent Claim
8 words
Composition of claim 6 wherein x is 2.
Claim 11
Dependent Claim
34 words
Composition of claim 1 wherein said nitrosated precursor compound is the diamide obtained by reacting a nitrosated acid or acid halide with a primary or secondary diamine of from 4 to 12 carbon atoms.
Claim 12
Dependent Claim
12 words
Composition of claim 8 wherein said nitrosated acid is nitrosated 4-methylvaleric acid.
Claim 13
Dependent Claim
10 words
Composition of claim 9 wherein said amine is hexamethylene diamine.
Claim 14
Dependent Claim
10 words
Composition of claim 8 wherein said nitrosated acid halide is
Claim 15
Dependent Claim
8 words
Composition of claim 11 wherein X is chlorine.
Claim 16
Dependent Claim
9 words
Composition of claim 12 wherein said diamine is 1,12-diaminododecane.
Claim 17
Dependent Claim
9 words
Composition of claim 13 wherein said diamine is N,N''-diisobutylhexamethylenediamine.
Claim 18
Dependent Claim
73 words
A nitrosated polyamide consisting essentially of the reaction product of at least one aliphatic primary or secondary diamine having from 4 to 20 carbon atoms; at least one dicarboxylic acid halide selected from aliphatic dicarboxylic acid halide of 6 to 12 carbon atoms, terephthaloyl halides and isophthaloyl halides and 4-nitroso-3,5-dichloro benzoyl halide said polyamide being characterized by a melting point below 200*C and further polymerizing by coupling of nitrosogroups in the solid state.
Claim 19
Dependent Claim
73 words
A nitrosated polyamide consisting essentially of the reaction product of at least one aliphatic primary or secondary diamine having from 4 to 20 carbon atoms; at least one dicarboxylic acid halide selected from aliphatic dicarboxylic acid halide of 6 to 12 carbon atoms, terephthaloyl halides and isophthaloyl halides and 4-nitroso-3,5-dichloro benzoyl halide said polyamide being characterized by a melting point below 200*C and further polymerizing by coupling of nitrosogroups in the solid state.
Claim 20
Dependent Claim
22 words
Composition of claim 11 wherein said aliphatic diamine is hexamethylenediamine or hexamethylenediamine having two N-alkyl substituents of 1 to 6 carbon atoms.
Claim 21
Dependent Claim
12 words
Composition of claim 12 wherein said dicarboxylic acid halide is terephthaloyl chloride.
Claim 22
Dependent Claim
12 words
Composition of claim 12 wherein said dicarboxylic acid halide is isophthaloyl chloride.
Claim 23
Dependent Claim
56 words
A nitrosated polyester prepared by reacting a polyglycol of the formula HO(CH2xO)yH wherein x is 2 to 20 and y is from 1 to an average of 100 with adipoyl halide or terephthaloyl halide and a nitrosated acid halide, said polymer melting below 200*C and further polymerizing by coupling of nitroso groups in the solid state.
Claim 24
Dependent Claim
56 words
A nitrosated polyester prepared by reacting a polyglycol of the formula HO(CH2xO)yH wherein x is 2 to 20 and y is from 1 to an average of 100 with adipoyl halide or terephthaloyl halide and a nitrosated acid halide, said polymer melting below 200*C and further polymerizing by coupling of nitroso groups in the solid state.
Claim 25
Dependent Claim
14 words
A nitrosated polyester of claim 19 wherein said nitrosated acid halide is 4-nitroso-3,5-dichloro-benzoyl chloride.
Claim 26
Dependent Claim
10 words
A nitrosated polyester of claim 20 wherein x is 2.
Claim 27
Dependent Claim
18 words
Composition of claim 1 wherein said precursor compound is a polymer of a diolefin having pendant olefinic groups.
Claim 28
Dependent Claim
13 words
Composition of claim 22 wherein said nitrosated precursor coMpound is nitrosated ethylene/propylene/1,4-hexadiene polymer.
Claim 29
Dependent Claim
13 words
Composition of claim 22 wherein said nitrosated precursor compound is nitrosated styrene/butadiene copolymer.
Claim 30
Dependent Claim
13 words
Composition of claim 22 wherein said nitrosated precursor compound is nitrosated ethylene/propylene/ethylidenenorbornene polymer.
Claim 31
Dependent Claim
12 words
Composition of claim 22 wherein said nitrosated precursor compound is nitrosated polybutadiene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |