US4064298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retardant polyamide fiber for use in carpets
Assignee: Honeywell International Inc
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Filing: 1976-09-22
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Granted: 1977-12-20
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Expires: 1996-09-22
Abstract
Abstract A flame-retardant polyamide fiber is prepared and made into a flame-retardant carpet. The polyamide fiber has incorporated therein from 1 to 15 percent by weight of zinc borate and from 1 to 15 percent of an organic halide which is substantially non-reactive with the polyamide except at temperatures above 300 DEG C. The flame-retardant fiber shows improved luster and improved colorfastness to light when dyed.
Inventors
- 👤 Judd Leonard Schwartz
- 👤 Richard Eugene Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:32
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/88; D01F6/90; C; C08; C08K; C08K3/00; C08K3/38; C08K5/00; C08K5/02; D01F1/00; D01F1/02; D01F1/07; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10S524/00; Y10S524/914; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/23986; Y10T428/23993
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
123 words
A flame-retardant pile carpet having a relatively pliable primary backing and a tufted surface, said surface being comprised of polyamide fibers having incorporated therein from 1 to 15 percent of the total weight of an organic chloride containing from 50 to 80 percent by weight of chlorine, which is substantially non-reactive with said polyamide except at temperatures above 300° C. and from 1 to 15 percent of the total weight of zinc borate, said fibers being bonded to said backing with a bonding substance comprising a latex material and a hydrate material selected from the group consisting of aluminum hydroxide and hydrated aluminum oxide, the ratio by weight of said latex material to said hydrate material being within the range 1:2 to 1:4.5.
Claim 2
Dependent Claim
123 words
A flame-retardant pile carpet having a relatively pliable primary backing and a tufted surface, said surface being comprised of polyamide fibers having incorporated therein from 1 to 15 percent of the total weight of an organic chloride containing from 50 to 80 percent by weight of chlorine, which is substantially non-reactive with said polyamide except at temperatures above 300° C. and from 1 to 15 percent of the total weight of zinc borate, said fibers being bonded to said backing with a bonding substance comprising a latex material and a hydrate material selected from the group consisting of aluminum hydroxide and hydrated aluminum oxide, the ratio by weight of said latex material to said hydrate material being within the range 1:2 to 1:4.5.
Claim 3
Dependent Claim
10 words
The carpet of claim 1 wherein said polyamide is polycaprolactam.
Claim 4
Dependent Claim
15 words
The carpet of claim 1 wherein said latex material is an ethylene-vinyl chloride copolymer latex.
Claim 5
Dependent Claim
137 words
In a process for producing a pile carpet having a relatively pliable primary backing through which polyamide fibers are tufted, the improvements which comprises incorporating in said polyamide fibers from 1 to 15 percent of the total weight of an organic chloride containing from 50 to 80 percent by weight of chlorine, which is substantially non-reactive with said polyamide except at temperatures above 300° C. and from 1 to 15 percent of the total weight of zinc borate, and bonding said fibers to said backing with a bonding substance comprising a latex material and a hydrate material selected from the group consisting of aluminum hydroxide and hydrated aluminum oxide, the ratio by weight of said latex material to said hydrate material being within the range 1:2 to 1:4.5, whereby the carpet has improved flame-retardancy and superior luster.
Claim 6
Dependent Claim
137 words
In a process for producing a pile carpet having a relatively pliable primary backing through which polyamide fibers are tufted, the improvements which comprises incorporating in said polyamide fibers from 1 to 15 percent of the total weight of an organic chloride containing from 50 to 80 percent by weight of chlorine, which is substantially non-reactive with said polyamide except at temperatures above 300° C. and from 1 to 15 percent of the total weight of zinc borate, and bonding said fibers to said backing with a bonding substance comprising a latex material and a hydrate material selected from the group consisting of aluminum hydroxide and hydrated aluminum oxide, the ratio by weight of said latex material to said hydrate material being within the range 1:2 to 1:4.5, whereby the carpet has improved flame-retardancy and superior luster.
Claim 7
Dependent Claim
10 words
The process of claim 4 wherein said polyamide is polycaprolactam.
Claim 8
Dependent Claim
15 words
The process of claim 4 wherein said latex material is an ethylene-vinyl chloride copolymer latex.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |