Patent US2628361A successfully refreshed from Google Patents.
Patent US4281095A successfully refreshed from Google Patents.
US4281095A
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Coating compositions obtained by reacting amino carboxylic acids derivatives with polyisocyanates and compounds containing carboxylic groups to produce polymers containing hydantoin rings and amide groups
Assignee: Bayer AG
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Filing: 1979-12-05
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Granted: 1981-07-28
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Expires: 1999-12-05
Abstract
Abstract In non-phenolic solvents soluble Polyamid-hydantoins optionally containing ester and/or imide and/or isocyanurate groups are obtained by reacting polyisocyanates with polyfunctional amino carboxylic acid derivatives and a compound containing at least a carboxylic group preferably in the presence of a non-phenolic solvent.
Inventors
- 👤 Willi Dunwald
- 👤 Jurgen Lewalter
- 👤 Rudolf Merten
- 👤 Ludwig Rottmaier
- 👤 Bernhard Schulte
- 👤 Karl-Heinrich Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:37
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3821; C08G73/00; C08G73/06; C08G73/0605; C08G73/0616
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
70 words
A polymer attached through (thio)hydantoin rings and amide groups obtained by reacting (a) polyfunctional amino carboxylic acids, its amide or its ester, with (b) polyiso(thio)cyanates which are masked or unmasked and a compound containing at least one carboxylic group or at least one carboxylic group together with at least one additional moiety selected from polyhydroxy, cyclic anhydride and isocyanurate polyisocyanates, with the reacting proceeding with or without a non-phenolic solvent.
Claim 2
Dependent Claim
70 words
A polymer attached through (thio)hydantoin rings and amide groups obtained by reacting (a) polyfunctional amino carboxylic acids, its amide or its ester, with (b) polyiso(thio)cyanates which are masked or unmasked and a compound containing at least one carboxylic group or at least one carboxylic group together with at least one additional moiety selected from polyhydroxy, cyclic anhydride and isocyanurate polyisocyanates, with the reacting proceeding with or without a non-phenolic solvent.
Claim 3
Dependent Claim
83 words
Polymers as claimed in claim 1 wherein as compound containing at least one carboxylic group a compound of the general formula is used: (X).sub.z --R.sup.1 --COOH wherein R 1 represents a z+1-functional, optionally substituted aliphatic, cycloaliphatic, aliphatic aromatic, aromatic radical or C 5 -C 12 aryl or cycloalkyl radical containing one or more hetero atoms in the ring; z represents an integer of from 1 to 4, and X represents a carboxyl, glycine acid derivative, hydroxy, amino, carboxyl ester or cyclic anhydride group.
Claim 4
Dependent Claim
68 words
A polymer as claimed in claim 2, wherein R 1 represents an optionally substituted aliphatic radical with C 1 -C 10 cycloaliphatic radical with C 9 -C 12 , aliphatic aromatic radical with C 6 -C 20 , aromatic radical with C 5 -C 12 or a C 5 -C 12 aryl or cycloalkyl radical containing N and/or Q and/or S hetero atoms in the ring and z=1.
Claim 5
Dependent Claim
52 words
A Polymer as claimed in claim 1, wherein the carboxylic group-containing compound is isophthalic acid and/or trimellitic acid anhydride and/or terephthalic acid, an isomeric carboxyl group-containing anilinoisobutric acid derivative or the corresponding oligo ester of these acids with small quantities of ethylene glycol, propylene glycol, glycerol, trimethylol propane and/or tris-hydroxy ethyl isocyanurate.
Claim 6
Dependent Claim
9 words
Polyhydantoin amide esters obtained as claimed in claim 1.
Claim 7
Dependent Claim
13 words
Lacquer mixtures for lacquering wires, containing a polymer as claimed in claim 1.
Claim 8
Dependent Claim
9 words
Coating compositions containing the polymer claimed in claim 1.
Claim 9
Dependent Claim
10 words
Lacquer mixtures, containing a polymer as claimed in claim 1.
Claim 10
Dependent Claim
18 words
Lacquer mixtures as claimed in claim 6 having a solid content of from 20 to 70% by weight.
References Cited (Backward Citations)
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Cited
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US3397253A
Cited
US3705874A
Cited
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Cited
US4169931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |