US4141880A
Expired / Lapsed
US
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Flame retarded nylon composition
Assignee: Great Lakes Chemical Corp
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Filing: 1978-01-03
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Granted: 1979-02-27
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Expires: 1998-01-03
Abstract
Abstract Disclosed is a novel, flame retarded, non-blooming nylon composition with excellent thermal stability. This composition is comprised of from about 5 to about 35 percent (by weight) of a condensation product derived from brominated phenol by the displacement of bromine from said phenol wherein: (a) said phenol is selected from the group consisting of tribromophenol, tetrabromophenol, pentabromophenol, and mixtures thereof; (b) said condensation product has a repeating structural unit of the formula ##STR1## WHEREIN A IS AN INTEGER OF FROM ABOUT 0 TO ABOUT 4, B IS AN INTEGER OF FROM ABOUT 0 TO ABOUT 2, C IS AN INTEGER OF FROM ABOUT 1 TO ABOUT 5, A PLUS B PLUS C EQUAL 5, Q is a monovalent bond from a carbon atom in the aromatic nucleus of said repeating structural unit to an oxygen atom bonded to an aromatic nucleus, and the polymeric units containing said repeating structural unit comprise at least 80 percent (by weight) of said product; (c) said condensation product contains from about 17 to about 31 percent (by weight) of elemental carbon, from about 0 to about 1.0 percent (by weight) of elemental hydrogen, from about 3 to about 8 percent (by weight) of elemental oxygen, and at least 60 percent (by weight) of elemental bromine; and (d) said condensation product has a molecular weight of at least 750, and one or more polymeric units containing at least four aromatic nuclei per unit comprise at least about 80 percent (by weight) of said product.
Inventors
- 👤 Richard C. Nametz
- 👤 Peter H. Burleigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:10
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08L; C08L77/00
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
244 words
A flame retarded, non-blooming nylon composition which is comprised of from about 5 to about 35 percent (by weight) of a polyphenylene oxide condensation product derived from brominated phenol by the displacement of bromine from said phenol wherein: (a) said phenol is selected from the group consisting of tribromophenol, tetrabromophenol, pentabromophenol, and mixtures thereof; (b) said condensation product has a repeating structural unit of the formula ##STR5## wherein a is an integer of from about 0 to about 4, b is an integer of from about 0 to about 2, c is an integer of from about 1 to about 5, a plus b plus c equal 5, Q is a monovalent bond from a carbon atom in the aromatic nucleus of said repeating structural unit to an oxygen atom bonded to an aromatic nucleus, and the polymeric unit(s) containing said repeating structural unit comprise at least about 80 percent (by weight) of said product; (c) said condensation product contains from about 17 to about 31 percent (by weight) of elemental carbon, from about 0 to about 1.0 percent (by weight) of elemental hydrogen, from about 3 to about 8 percent (by weight) of elemental oxygen, and at least 60 percent (by weight) of elemental bromine; and (d) said condensation product has a molecular weight of at least 750, and one or more polymeric units containing at least four aromatic nuclei per unit comprise at least about 80 percent (by weight) of said product.
Claim 2
Dependent Claim
244 words
A flame retarded, non-blooming nylon composition which is comprised of from about 5 to about 35 percent (by weight) of a polyphenylene oxide condensation product derived from brominated phenol by the displacement of bromine from said phenol wherein: (a) said phenol is selected from the group consisting of tribromophenol, tetrabromophenol, pentabromophenol, and mixtures thereof; (b) said condensation product has a repeating structural unit of the formula ##STR5## wherein a is an integer of from about 0 to about 4, b is an integer of from about 0 to about 2, c is an integer of from about 1 to about 5, a plus b plus c equal 5, Q is a monovalent bond from a carbon atom in the aromatic nucleus of said repeating structural unit to an oxygen atom bonded to an aromatic nucleus, and the polymeric unit(s) containing said repeating structural unit comprise at least about 80 percent (by weight) of said product; (c) said condensation product contains from about 17 to about 31 percent (by weight) of elemental carbon, from about 0 to about 1.0 percent (by weight) of elemental hydrogen, from about 3 to about 8 percent (by weight) of elemental oxygen, and at least 60 percent (by weight) of elemental bromine; and (d) said condensation product has a molecular weight of at least 750, and one or more polymeric units containing at least four aromatic nuclei per unit comprise at least about 80 percent (by weight) of said product.
Claim 3
Dependent Claim
22 words
The nylon composition of claim 1, wherein said brominated phenol is selected from the group consisting of tribromphenol, tetrabromophenol, and mixtures thereof.
Claim 4
Dependent Claim
12 words
The nylon composition of claim 2, wherein a is at least 1.
Claim 5
Dependent Claim
21 words
The nylon composition of claim 3, wherein c is selected from the group consisting of 1, 2, 3, and mixtures thereof.
Claim 6
Dependent Claim
28 words
The nylon composition of claim 4, wherein said brominated phenol is tribromphenol; and wherein said condensation product contains from about 62 to about 66 percent of elemental bromine.
Claim 7
Dependent Claim
82 words
The nylon composition of claim 5, wherein said brominated phenol is 2,4,6-tribromophenol; wherein said nylon compositions is comprised of from about 9 to about 22 percent (by weight of composition) of said condensation product; and wherein said condensation product has a notched Izod impact strength of less than about 0.5 foot pounds per inch (A.S.T.M. D 256), and an elongation of less than about 2.0 percent and a tensile strength of less than about 200 pounds per square inch (A.S.T.M. D 638).
Claim 8
Dependent Claim
24 words
The nylon composition of claim 6, wherein said condensation product has an intrinsic viscosity (in tetrahydrofuran at 25° centigrade) of less than about 1.8.
Claim 9
Dependent Claim
257 words
A flame retarded, non-blooming nylon composition which is comprised of from about 1 to about 20 percent (by weight) of enhancing agent and from about 5 to about 35 percent (by weight) of a polyphenylene oxide condensation product derived from brominated phenol by the displacement of bromine from said phenol wherein: (a) said phenol is selected from the group consisting of tribromophenol, tetrabromophenol, pentabromophenol, and mixtures thereof; (b) said condensation product has a repreating structural unit of the formula ##STR6## wherein a is an integer of from about 0 to about 4, b is an integer of from about 0 to about 2, c is an integer of from about 1 to about 5, a plus b plus c equal 5, Q is a monovalent bond from a carbon atom in the aromatic nucleus of said repeating structural unit to an oxygen atom bonded to an aromatic nucleus, and the polymeric unit(s) containing said repeating structural unit comprise at least about 80 percent (by weight) of said product; (c) said condensation product contains from about 17 to about 31 percent (by weight) of elemental carbon, from about 0 to about 1.0 percent (by weight) of elemental hydrogen, from about 3 to about 8 percent (by weight) of elemental oxygen, and at least 60 percent (by weight) of elemental bromine; and (d) said condensation product has a molecular weight of at least 750, and one or more polymeric units containing at least four aromatic nuclei per unit comprise at least about 80 percent (by weight) of said product.
Claim 10
Dependent Claim
257 words
A flame retarded, non-blooming nylon composition which is comprised of from about 1 to about 20 percent (by weight) of enhancing agent and from about 5 to about 35 percent (by weight) of a polyphenylene oxide condensation product derived from brominated phenol by the displacement of bromine from said phenol wherein: (a) said phenol is selected from the group consisting of tribromophenol, tetrabromophenol, pentabromophenol, and mixtures thereof; (b) said condensation product has a repreating structural unit of the formula ##STR6## wherein a is an integer of from about 0 to about 4, b is an integer of from about 0 to about 2, c is an integer of from about 1 to about 5, a plus b plus c equal 5, Q is a monovalent bond from a carbon atom in the aromatic nucleus of said repeating structural unit to an oxygen atom bonded to an aromatic nucleus, and the polymeric unit(s) containing said repeating structural unit comprise at least about 80 percent (by weight) of said product; (c) said condensation product contains from about 17 to about 31 percent (by weight) of elemental carbon, from about 0 to about 1.0 percent (by weight) of elemental hydrogen, from about 3 to about 8 percent (by weight) of elemental oxygen, and at least 60 percent (by weight) of elemental bromine; and (d) said condensation product has a molecular weight of at least 750, and one or more polymeric units containing at least four aromatic nuclei per unit comprise at least about 80 percent (by weight) of said product.
Claim 11
Dependent Claim
23 words
The nylon composition of claim 8, wherein said enhancing agent is selected from the group consisting of oxides of antimony, arsenic, and bismuth.
Claim 12
Dependent Claim
40 words
The nylon composition of claim 9, wherein said nylon composition is comprised of from about 3 to about 10 percent (by weight) of said enhancing agent and from about 9 to about 22 percent (by weight) of said condensation product.
Claim 13
Dependent Claim
13 words
The nylon composition of claim 10, wherein said enhancing agent is antimony trioxide.
Claim 14
Dependent Claim
22 words
The nylon composition of claim 11, wherein said brominated phenol is selected from the group consisting of tribromophenol, tetrabromphenol, and mixtures thereof.
Claim 15
Dependent Claim
12 words
The nylon composition of claim 12, wherein a is at least 1.
Claim 16
Dependent Claim
19 words
The nylon composition of claim 13, wherein c is selected from the group consisting of 1,2,3 and mixtures thereof.
Claim 17
Dependent Claim
30 words
The nylon composition of claim 14, wherein said brominated phenol is tribromphenol; and wherein said condensation product contains from about 62 to about 66 percent (by weight) of elemental bromine.
Claim 18
Dependent Claim
57 words
The nylon composition of claim 15, wherein said brominated phenol is 2,4,6-tribromophenol; and wherein said condensation product has a notched Izod impact strength of less than about 0.5 foot pounds per inch (A.S.T.M. D 256), and an elongation of less than about 2.0 percent and a tensile strength of less than about 200 pounds per square inch.
Claim 19
Dependent Claim
61 words
The nylon composition of claim 1, wherein said composition is comprised of from about 0 to about 80 percent (by weight) of a material selected from the group consisting of adhesion promotors, antioxidants, antistatic agents, antimicrobial agents, colorants, other flame retardants (in addition to the flame retarding condensation product described herein), heat stabilizers, light stabilizers, fillers, reinforcing agents, and mixtures thereof.
Claim 20
Dependent Claim
61 words
The nylon composition of claim 8, wherein said composition is comprised of from about 0 to about 80 percent (by weight) of a material selected from the group consisting of adhesion promoters, antioxidants, antistatic agents, antimicrobial agents, colorants, other flame retardants (in addition to the flame retarding condensation product described herein), heat stabilizers, light stabilizers, fillers, reinforcing agents, and mixtures thereof.
Claim 21
Dependent Claim
34 words
The nylon composition of claim 1, wherein said composition is comprised of from about 6 to about 60 percent (by weight) of fiberglass and at least 20 percent (by weight) of said nylon composition.
Claim 22
Dependent Claim
35 words
The nylon composition of claim 8, wherein said composition is comprised of from about 6 to about 60 percent (by weight) of fiberglass and at least 20 per percent (by weight) of said nylon composition.
Claim 23
Dependent Claim
34 words
The nylon composition of claim 1, wherein said composition is comprised of from about 6 to about 60 percent (by weight) of asbestos and at least 20 percent (by weight) of said nylon composition.
Claim 24
Dependent Claim
34 words
The nylon composition of claim 8, wherein said composition is comprised of from about 6 to about 60 percent (by weight) of asbestos and at least 20 percent (by weight) of said nylon composition.
Claim 25
Dependent Claim
18 words
A polymer blend comprised of at least 25 percent (by weight) of the nylon composition of claim 1.
Claim 26
Dependent Claim
19 words
A polymer blend comprised of at least about 25 percent (by weight) of the nylon composition of claim 8.
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) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |