US4396730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-retarding resin composition and fire retardant composition
Assignee: Kyowa Chemical Industry Co Ltd
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Filing: 1981-11-19
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Granted: 1983-08-02
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Expires: 2001-11-19
Abstract
Abstract A fire-retarding resin composition composed of (a) a thermoplastic resin, (b) about 20 to about 60% by weight, based on the total weight of (a), (b) and (c), of a magnesium hydroxide powder whose surface is treated with an alkali metal oleate, and (c) about 0.1 to about 10% by weight, based on the total weight of (a), (b) and (c), of at least one fatty acid metal salt selected from the group consisting of magnesium oleate and aluminum oleate; and a fire retardant composition for thermoplastic resins, said composition comprising (b) a magnesium hydroxide powder whose surface is treated with an alkali metal oleate, and (c) at least one fatty acid metal salt selected from the group consisting of magnesium oleate and aluminum oleate, the weight ratio of (b) to (c) being from 2 to 600:1.
Inventors
- 👤 Takeshi Imahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08K9/00; C08K9/04; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
80 words
A fire-retarding resin composition composed of (a) a thermoplastic resin, (b) about 20 to about 60% by weight, based on the total weight of (a), (b) and (c), of a magnesium hydroxide powder whose surface is treated with an alkali metal oleate, and (c) about 0.1 to about 10% by weight, based on the total weight of (a), (b) and (c), of at least one fatty acid metal salt selected from the group consisting of magnesium oleate and aluminum oleate.
Claim 2
Dependent Claim
80 words
A fire-retarding resin composition composed of (a) a thermoplastic resin, (b) about 20 to about 60% by weight, based on the total weight of (a), (b) and (c), of a magnesium hydroxide powder whose surface is treated with an alkali metal oleate, and (c) about 0.1 to about 10% by weight, based on the total weight of (a), (b) and (c), of at least one fatty acid metal salt selected from the group consisting of magnesium oleate and aluminum oleate.
Claim 3
Dependent Claim
72 words
The composition of claim 1 wherein said magnesium hydroxide powder has (i) a BET specific surface area of about 1 to about 20 m 2 /g, and (ii) a x/ε B ratio, which is the ratio of its average second order particle diameter (x) determined by the LUZEX method to its average second order particle diameter (ε B ) calculated from the BET specific surface area, of not more than about 2.
Claim 4
Dependent Claim
13 words
The composition of claim 2 wherein the alkali metal oleate is sodium oleate.
Claim 5
Dependent Claim
15 words
The composition of claim 1 wherein the alkali metal oleate is sodium or potassium oleate.
Claim 6
Dependent Claim
13 words
The composition of claim 4 wherein the alkali metal oleate is sodium oleate.
Claim 7
Dependent Claim
62 words
The composition of claim 1 wherein the amount of the magnesium hydroxide powder (b) is from about 30 to about 55% by weight, based on the total weight of (a), (b) and (c); and the amount of the fatty acid metal salt (c) is from about 0.5 to about 6% by weight, based on the total weight of (a), (b) and (c).
Claim 8
Dependent Claim
56 words
A fire retardant composition for thermoplastic resins, said composition comprising (b) a magnesium hydroxide powder whose surface is treated with an alkali metal oleate, and (c) at least one fatty acid metal salt selected from the group consisting of magnesium oleate and aluminum oleate, the weight ratio of (b) to (c) being from 2 to 600:1.
Claim 9
Dependent Claim
56 words
A fire retardant composition for thermoplastic resins, said composition comprising (b) a magnesium hydroxide powder whose surface is treated with an alkali metal oleate, and (c) at least one fatty acid metal salt selected from the group consisting of magnesium oleate and aluminum oleate, the weight ratio of (b) to (c) being from 2 to 600:1.
Claim 10
Dependent Claim
70 words
The composition of claim 7 wherein the magnesium hydroxide has a BET specific surface area of about 1 to about 20 m 2 /g, and (ii) a x/ε B ratio, which is the ratio of its average second order particle diameter (x) determined by the LUZEX method to its average second order particle diameter (ε B ) calculated from the BET specific surface area, of not more than about 2.
Claim 11
Dependent Claim
13 words
The composition of claim 8 wherein the alkali metal oleate is sodium oleate.
Claim 12
Dependent Claim
16 words
The composition of claim 7 wherein the alkali metal oleate is sodium oleate or potassium oleate.
Claim 13
Dependent Claim
13 words
The composition of claim 10 wherein the alkali metal oleate is sodium oleate.
Claim 14
Dependent Claim
18 words
The composition of claim 7 wherein the weight ratio of (b) to (c) is from 3 to 120:1.
References Cited (Backward Citations)
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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) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |