Patent US4201832A successfully refreshed from Google Patents.
US4201832A
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Non melt-drip flame retardant polycarbonate composition
Assignee: General Electric Co
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Filing: 1978-06-23
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Granted: 1980-05-06
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Expires: 1998-06-23
Abstract
Abstract A coated non melt-drip and non-opaque flame retardant polycarbonate article having improved abrasion, scratch and chemical resistance, comprising an admixture of an aromatic carbonate polymer and a metal salt of a monomeric or polymeric unsubstituted or substituted aliphatic, aromatic or heterocyclic sulfonic acid, said article having deposited on the surface thereof a coating comprised of a certain aminoplast adhesion promoter and levelling agent, a diol, a certain melamine, and a polyol.
Inventors
- 👤 Walter L. Hall
- 👤 William J. J. O'Connell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:23
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/02; B05D7/24; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34922; C08K5/36; C08K5/41; C08K5/42; C08L; C08L69/00; C08L81/00; C08L81/08; C09; C09K; C09K21/00; C09K21/14; C08J2369/00; C08J2461/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
168 words
A coated non melt-drip flame retardant polycarbonate article consisting essentially of an admixture of an aromatic carbonate polymer and a flame retardant amount of a compound selected from the group consisting of the alkali metal and alkaline earth metal salts of unsubstituted and substituted monomeric or polymeric aliphatic, aromatic or heterocyclic sulfonic acids and mixtures thereof, said polycarbonate article having deposited on the surface thereof an adherent, non melt-drip, abrasion, scratch and chemical solvent resistant coating consisting essentially of the reaction products of: (i) a melamine represented by the general formula ##STR3## wherein each R is independently selected from hydrogen or a lower alkyl group, each R 1 is independently selected from an alkylene group, and each R 2 is independently selected from a hydroxy group, a lower alkoxy group, or a lower alkyl group; (ii) a lower alkyl diol; (iii) a polyester or polyether polyol; and (iv) an adhesion promoter and leveling agent consisting essentially of the reaction products of a melamine and a hydroxy functional acrylate.
Claim 2
Dependent Claim
168 words
A coated non melt-drip flame retardant polycarbonate article consisting essentially of an admixture of an aromatic carbonate polymer and a flame retardant amount of a compound selected from the group consisting of the alkali metal and alkaline earth metal salts of unsubstituted and substituted monomeric or polymeric aliphatic, aromatic or heterocyclic sulfonic acids and mixtures thereof, said polycarbonate article having deposited on the surface thereof an adherent, non melt-drip, abrasion, scratch and chemical solvent resistant coating consisting essentially of the reaction products of: (i) a melamine represented by the general formula ##STR3## wherein each R is independently selected from hydrogen or a lower alkyl group, each R 1 is independently selected from an alkylene group, and each R 2 is independently selected from a hydroxy group, a lower alkoxy group, or a lower alkyl group; (ii) a lower alkyl diol; (iii) a polyester or polyether polyol; and (iv) an adhesion promoter and leveling agent consisting essentially of the reaction products of a melamine and a hydroxy functional acrylate.
Claim 3
Dependent Claim
77 words
The article of claim 1 wherein the anionic portion of said alkali metal and alkali earth metal salt is selected from the following anions: monomeric or polymeric aromatic sulfonates; monomeric or polymeric substituted aromatic sulfonates; monomeric or polymeric aromatic sulfonesulfonates; aromatic ketone sulfonates; heterocyclic sulfonates; halogenated methanesulfonates; perfluoralkane sulfonates; aromatic sulfide sulfonates; monomeric or polymeric aromatic ether sulfonates; aliphatic and olefinic sulfonates; monomeric or polymeric phenol ester sulfonates; halocycloaliphatic aromatic sulfonates; monomeric or polymeric aromatic amide sulfonates.
Claim 4
Dependent Claim
21 words
The article of claim 1 wherein said carbonate polymer contains from about 0.001% to about 10% by weight of said salt.
Claim 5
Dependent Claim
33 words
The article of claim 1 wherein said melamine is represented by the general formula ##STR4## wherein R 3 is independently selected from lower alkyl groups containing from 1 to about 4 carbon atoms.
Claim 6
Dependent Claim
10 words
The article of claim 4 wherein R 3 is methyl.
Claim 7
Dependent Claim
12 words
The article of claim 4 wherein said polyol is a polyester polyol.
Claim 8
Dependent Claim
152 words
A coated non melt-drip flame retardant polycarbonate article consisting essentially of an admixture of an aromatic carbonate polymer and a flame retardant amount of a compound selected from the group consisting of alkali metal and alkaline earth metal salts of unsubstituted and substituted monomeric or polymeric aliphatic, aromatic or heterocyclic sulfonic acids and mixtures thereof, said polycarbonate article having deposited thereon a coating composition consisting essentially of (i) a melamine represented by the general formula ##STR5## wherein each R is independently selected from hydrogen or a lower alkyl group, each R 1 is independently selected from an alkylene group, and each R 2 is independently selected from a hydroxy group, a lower alkoxy group, or a lower alkyl group; (ii) a lower alkyl diol; (iii) a polyester or polyether polyol; and (iv) an adhesion promoter and leveling agent consisting essentially of the reaction products of a melamine and a hydroxy functional acrylate.
Claim 9
Dependent Claim
152 words
A coated non melt-drip flame retardant polycarbonate article consisting essentially of an admixture of an aromatic carbonate polymer and a flame retardant amount of a compound selected from the group consisting of alkali metal and alkaline earth metal salts of unsubstituted and substituted monomeric or polymeric aliphatic, aromatic or heterocyclic sulfonic acids and mixtures thereof, said polycarbonate article having deposited thereon a coating composition consisting essentially of (i) a melamine represented by the general formula ##STR5## wherein each R is independently selected from hydrogen or a lower alkyl group, each R 1 is independently selected from an alkylene group, and each R 2 is independently selected from a hydroxy group, a lower alkoxy group, or a lower alkyl group; (ii) a lower alkyl diol; (iii) a polyester or polyether polyol; and (iv) an adhesion promoter and leveling agent consisting essentially of the reaction products of a melamine and a hydroxy functional acrylate.
Claim 10
Dependent Claim
77 words
The article of claim 7 wherein the anionic portion of said alkali metal and alkali earth metal salt is selected from the following anions: monomeric or polymeric aromatic sulfonates; monomeric or polymeric substituted aromatic sulfonates; monomeric or polymeric aromatic sulfonesulfonates; aromatic ketone sulfonates; heterocyclic sulfonates; halogenated methanesulfonates; perfluoralkane sulfonates; aromatic sulfide sulfonates; monomeric or polymeric aromatic ether sulfonates; aliphatic and olefinic sulfonates; monomeric or polymeric phenol ester sulfonates; halocycloaliphatic aromatic sulfonates; monomeric or polymeric aromatic amide sulfonates.
Claim 11
Dependent Claim
21 words
The article of claim 7 wherein said carbonate polymer contains from about 0.001% to about 10% by weight of said salt.
Claim 12
Dependent Claim
33 words
The article of claim 7 wherein said melamine is represented by the general formula ##STR6## wherein R 3 is independently selected from lower alkyl groups containing from 1 to about 4 carbon atoms.
Claim 13
Dependent Claim
10 words
The particle of claim 10 wherein R 3 is methyl.
Claim 14
Dependent Claim
12 words
The article of claim 10 wherein said polyol is a polyester polyol.
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) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |