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US3956236A
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US
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Synergistic compositions for increasing flame resistance of polymers
Assignee: Honeywell International Inc
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Filing: 1974-04-29
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Granted: 1976-05-11
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Expires: 1994-04-29
Abstract
Abstract A composition for increasing flame resistance of a step-reaction polymer comprising a metal salt of certain organic acids in combination with certain organic acids or their ammonium salts, the method of treating the step-reaction polymer with the composition and the resulting treated polymer.
Inventors
- 👤 Francis E. Evans
- 👤 Kenneth B. Gilleo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:16
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0066; D; D06; D06M; D06M11/00; D06M11/58; D06M11/67; D06M13/00; D06M13/10; D06M13/184; D06M13/192; D06M13/244; D06M13/248; D06M13/252
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
75 words
A polymer selected from the group consisting of nylon, polyester and polyurethane, said polymer having from about 1 to 15 weight percent of a composition added thereto, said composition comprising: a. from about 20 to 80 weight percent of a metal salt of a hydrocarbyl hydroxycarboxylic acid; and b. from about 20 to 80 weight percent of a metal free organic compound selected from the group consisting of hydrocarbyl hydroxycarboxylic acids and their ammonium salts.
Claim 2
Dependent Claim
75 words
A polymer selected from the group consisting of nylon, polyester and polyurethane, said polymer having from about 1 to 15 weight percent of a composition added thereto, said composition comprising: a. from about 20 to 80 weight percent of a metal salt of a hydrocarbyl hydroxycarboxylic acid; and b. from about 20 to 80 weight percent of a metal free organic compound selected from the group consisting of hydrocarbyl hydroxycarboxylic acids and their ammonium salts.
Claim 3
Dependent Claim
21 words
The polymer of claim 1 wherein the polymer is treated from about 2 to about 8 weight percent of the composition.
Claim 4
Independent Claim
80 words
A method for increasing the flame resistance of a polymer selected from a group consisting of nylon, polyester and polyurethane comprising adding to the polymer from about 1 to 15 weight percent of a composition comprising: a. from about 20 to 80 weight percent of a metal salt of a hydrocarbyl hydroxycarboxylic acid; and b. from 20 to 80 weight percent of a metal free organic compound selected from the group consisting of hydrocarbyl hydroxycarboxylic acids and their ammonium salts.
Claim 5
Independent Claim
80 words
A method for increasing the flame resistance of a polymer selected from a group consisting of nylon, polyester and polyurethane comprising adding to the polymer from about 1 to 15 weight percent of a composition comprising: a. from about 20 to 80 weight percent of a metal salt of a hydrocarbyl hydroxycarboxylic acid; and b. from 20 to 80 weight percent of a metal free organic compound selected from the group consisting of hydrocarbyl hydroxycarboxylic acids and their ammonium salts.
Claim 6
Dependent Claim
10 words
The method of claim 3 wherein the polymer is nylon.
Claim 7
Dependent Claim
65 words
A composition for increasing flame resistance of a polymer selected from the group consisting of nylon, polyester, and polyurethane, comprising: a. from about 20 to 80 weight percent of a metal salt of a hydrocarbyl hydroxycarboxylic acid; and b. from about 20 to 80 weight percent of a metal free organic compound selected from a group consisting of hydrocarbyl hydroxycarboxylic acids and their ammonium salts.
Claim 8
Dependent Claim
65 words
A composition for increasing flame resistance of a polymer selected from the group consisting of nylon, polyester, and polyurethane, comprising: a. from about 20 to 80 weight percent of a metal salt of a hydrocarbyl hydroxycarboxylic acid; and b. from about 20 to 80 weight percent of a metal free organic compound selected from a group consisting of hydrocarbyl hydroxycarboxylic acids and their ammonium salts.
Claim 9
Dependent Claim
19 words
The composition of claim 5 wherein the metal salt is a lithium, sodium, potassium, calcium or magnesium metal salt.
Claim 10
Dependent Claim
12 words
The composition of claim 6 wherein the metal salt is lithium salt.
Claim 11
Dependent Claim
17 words
The composition of claim 6 wherein the metal salt is lithium tartrate, lithium malate, or lithium citrate.
Claim 12
Dependent Claim
19 words
The composition of claim 3 wherein the metal free organic compound is ammonium citrate, ammonium malate or ammonium tartrate.
References Cited (Backward Citations)
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US3087900A
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US3087901A
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US3179625A
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US3342762A
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US3487122A
Cited
US3531427A
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US3798198A
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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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |