US4001177A
Expired / Lapsed
US
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Flame-retarding polyamide composition
Assignee: Toray Industries Inc
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Filing: 1975-11-03
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Granted: 1977-01-04
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Expires: 1995-11-03
Abstract
Abstract Flame-retarding polyamide composition having excellent mechanical and flame retardant properties is disclosed. The composition comprises polyamide, about 3 to 40% by weight of melamine on the basis of the polyamide, and about 0.5 to 20% by weight on the basis of the polyamide and about 2 to 75% by weight on the basis of melamine of a compound represented by a compound selected from the group consisting of the following formulas (I) and (II) ##STR1## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different radicals selected from the group consisting of hydrogen, alkyl, alicyclic and aromatic radicals having from 1 to 10 carbon atoms, and from such radicals having a substituent selected from the group consisting of --OH, --COOR' and --CONH 2 , wherein R' is aliphatic alkyl group having from 1 to 5 carbon atoms.
Inventors
- 👤 Tadao Tsutsumi
- 👤 Nobuo Kato
- 👤 Masanobu Morikawa
- 👤 Toshikazu Aoyama
- 👤 Kazumi Nagai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:32
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34924
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
153 words
A flame-retarding polyamide composition which comprises polyamide having receiving amide groups as integral parts of the main polymer chain, about 3 to 40% by weight of melamine on the basis of the polyamide, and about 0.5 to 20% by weight on the basis of the polyamide and about 2 to 75% by weight on the basis of melamine of a compound represented by a compound selected from the group consisting of the following formulas (I) and (II): ##STR3## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different radicals selected from the group consisting of hydrogen, alkyl, alicyclic and aromatic radicals having from 1 to 10 carbon atoms, and from such radicals having a substituent selected from the group consisting of --OH, --COOR' and --CONH 2 , wherein R' is aliphatic alkyl group having from 1 to 5 carbon atoms.
Claim 2
Dependent Claim
153 words
A flame-retarding polyamide composition which comprises polyamide having receiving amide groups as integral parts of the main polymer chain, about 3 to 40% by weight of melamine on the basis of the polyamide, and about 0.5 to 20% by weight on the basis of the polyamide and about 2 to 75% by weight on the basis of melamine of a compound represented by a compound selected from the group consisting of the following formulas (I) and (II): ##STR3## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different radicals selected from the group consisting of hydrogen, alkyl, alicyclic and aromatic radicals having from 1 to 10 carbon atoms, and from such radicals having a substituent selected from the group consisting of --OH, --COOR' and --CONH 2 , wherein R' is aliphatic alkyl group having from 1 to 5 carbon atoms.
Claim 3
Dependent Claim
24 words
A flame-retarding polyamide composition of claim 1, wherein the amount of melamine is about 5 to 30% by weight on the basis of polyamide.
Claim 4
Dependent Claim
40 words
A flame-retarding polyamide composition of claim 1, wherein the amount of cyanurate or isocyanurate compound is about 0.5 to 10% by weight on the basis of the polyamide and about 5 to 50% by weight on the basis of melamine.
Claim 5
Dependent Claim
58 words
A flame-retarding polyamide composition of claim 1, wherein the cyanurate or isocyanurate compound is selected from the group consisting of the following general formulas (I) and (II): ##STR4## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are alkyl, alicyclic or aromatic radicals having 1 to 10 carbon atoms.
Claim 6
Dependent Claim
13 words
A flame-retarding polyamide composition of claim 4, wherein the compound is trimethyl cyanurate.
Claim 7
Dependent Claim
59 words
A flame-retarding polyamide composition of claim 1, wherein the cyanurate or isocyanurate compound is selected from the group consisting of the following general formulas (I) and (II): ##STR5## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are alkyl radicals having 2 to 10 carbon atoms and a hydroxyl substituent.
Claim 8
Dependent Claim
13 words
The flame-retarding polyamide composition of claim 6, wherein the compound is tris-(2-hydroxyethyl) isocyanurate.
Claim 9
Dependent Claim
62 words
The flame-retarding polyamide composition of claim 1, wherein the cyanurate or isocyanurate compound is selected from the group consisting of the following general formulas (I) and (II): ##STR6## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are alkyl, alicyclic or aromatic radicals having 2- 10 carbon atoms and a --CONH 2 substituent.
Claim 10
Dependent Claim
13 words
The flame-retarding polyamide composition of claim 1 wherein the compound is tris-(2-carbamoylethyl) isocyanurate.
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) | 1980-01-04 | 1980-07-05 | 1981-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-04 | 1984-07-05 | 1985-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-04 | 1988-07-05 | 1989-01-04 | $7700.00 | Window Closed / Lapsed |