Patent US4154718A successfully refreshed from Google Patents.
US4154718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-retardant thermoplastic resin composition
Assignee: Kyowa Chemical Industry Co Ltd
•
Filing: 1977-08-29
•
Granted: 1979-05-15
•
Expires: 1997-08-29
Abstract
Abstract A fire-retardant thermoplastic resin composition consisting essentially of:
Inventors
- 👤 Shigeo Miyata
- 👤 Takesi Imahasi
- 👤 Hitosi Anabuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:12
CPC Classifications
C; C08; C08K; C08K3/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
153 words
A fire-retardant thermoplastic resin composition consisting essentially of: (A) a thermoplastic synthetic resin, (B) about 40 to 150 parts by weight per 100 parts by weight of the thermoplastic synthetic resin, of at least one magnesium-containing inorganic compound selected from the group consisting of magnesium hydroxide, basic magnesium carbonate hydrate and hydrotalcite, and (C) a fire-retardant assistant selected from the group consisting of (1) about 0.1 to 30 parts by weight, per 100 parts by weight of the magnesium-containing inorganic compound, of an alkali metal chloride, (2) about 0.2 to 5% by weight, calculated as metal per 100 parts by weight of the magnesium-containing inorganic compound, of an inorganic tin compound and (3) a combination of the alkali metal chloride (1) with about 0.2 to 5% by weight, calculated as metal per 100 parts by weight of the magnesium-containing inorganic compond, of an inorganic tin compound or an inorganic vanadium compound or both.
Claim 2
Dependent Claim
153 words
A fire-retardant thermoplastic resin composition consisting essentially of: (A) a thermoplastic synthetic resin, (B) about 40 to 150 parts by weight per 100 parts by weight of the thermoplastic synthetic resin, of at least one magnesium-containing inorganic compound selected from the group consisting of magnesium hydroxide, basic magnesium carbonate hydrate and hydrotalcite, and (C) a fire-retardant assistant selected from the group consisting of (1) about 0.1 to 30 parts by weight, per 100 parts by weight of the magnesium-containing inorganic compound, of an alkali metal chloride, (2) about 0.2 to 5% by weight, calculated as metal per 100 parts by weight of the magnesium-containing inorganic compound, of an inorganic tin compound and (3) a combination of the alkali metal chloride (1) with about 0.2 to 5% by weight, calculated as metal per 100 parts by weight of the magnesium-containing inorganic compond, of an inorganic tin compound or an inorganic vanadium compound or both.
Claim 3
Dependent Claim
63 words
The composition of claim 1 which further contains about 10 to 100 parts by weight of a filler, about 0.1 to 10 parts by weight of an antioxidant, about 0.1 to about 5 parts by weight of a lubricant and about 0.1 to about 10 parts by weight of an ultraviolet absorber, per 100 parts by weight of the thermoplastic synthetic resin (A).
Claim 4
Dependent Claim
35 words
The composition of claim 1 wherein the magnesium-containing inorganic compound (B) is surface-treated with about 1 to 10% by weight, based on the weight of the magnesium-containing inorganic compound, of an anionic surface active agent.
Claim 5
Dependent Claim
24 words
The composition of claim 1 wherein the alkali metal chloride is selected from a chloride of an alkali metal selected from K and Na.
Claim 6
Dependent Claim
46 words
The composition of claim 1 wherein the inorganic tin compound in (2) or (3) of (C) is a compound selected from the group consisting of sodium stannate, potassium stannate, metastannic acid, stannous oxide, stannic oxide, stannous chloride, stannic chloride, stannous sulfate, stannic sulfate and stannous iodide.
Claim 7
Dependent Claim
33 words
The composition of claim 1 wherein the inorganic vanadium compound (3) is a compound selected from the group consisting of sodium vanadate, potassium vanadate, ammonium vanadate, vanadium pentoxide, vanadium trichloride, and vanadyl sulfate.
Claim 8
Dependent Claim
31 words
The composition of claim 1 which comprises about 70 to 120 parts by weight, per 100 parts by weight, of the thermoplastic synthetic resin of at least one magnesium-containing inorganic compound.
Claim 9
Dependent Claim
13 words
The composition of claim 1 wherein the magnesium-containing inorganic compound is magnesium hydroxide.
Claim 10
Dependent Claim
15 words
The composition of claim 1 wherein the magnesium-containing inorganic compound is basic magnesium carbonate hydrate.
Claim 11
Dependent Claim
12 words
The composition of claim 1 wherein the magnesium-containing inorganic compound is hydrotalcite.
Claim 12
Dependent Claim
16 words
The composition of claim 1 wherein the fire-retardant assistant is the alkali metal chloride (C) (1).
Claim 13
Dependent Claim
16 words
The composition of claim 1 wherein the fire-retardant assistant is the inorganic tin compound (C) (2).
Claim 14
Dependent Claim
34 words
The fire-retardant composition of claim 1 wherein the fire-retardant assistant is the combination of the alkali metal chloride with at least one of an inorganic tin compound and an inorganic vanadium compound (C) (3).
Claim 15
Dependent Claim
22 words
The composition of claim 13 wherein the fire-retardant assistant is a combination of the alkali metal chloride with an inorganic vanadium compound.
Claim 16
Dependent Claim
34 words
The composition of claim 1 wherein the thermoplastic synthetic resin is selected from the group consisting of homopolymers or copolymers of alpha-olefins, acrylonitrile butadiene-styrene resins, polyesters, polycarbonate resins, and synthetic rubbers or mixtures thereof.
Claim 17
Dependent Claim
54 words
The composition of claim 15 wherein the fire-retardant assistant is a combination of an alkali metal chloride with about 0.2 to 5% by weight, calculated as metal per 100 parts by weight of the magnesium-containing inorganic compound, of an inorganic vanadium compound or mixture of an inorganic vanadium compound and an inorganic tin compound.
References Cited (Backward Citations)
US3239482A
Cited
US3488725A
Cited
US3879523A
Cited
US3829400A
Cited
US3846372A
Cited
US3998783A
Cited
US3912671A
Cited
US3996142A
Cited
US3962177A
Cited
US4002597A
Cited
US4085088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |