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US4216136A Expired / Lapsed US ⏱️ 0.0 years remaining

Fire retardant resin compositions and articles formed thereof

Assignee: Individual
•
Filing: 1978-06-16
•
Granted: 1980-08-05
•
Expires: 1998-06-16
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Abstract

Abstract Reinforced synthetic resin compositions are provided having 25 to 90% by weight of synthetic resin, and the balance (75 to 10% by weight) of reinforcing fillers comprising: (1) 0 to 150 parts by weight of epsom salt, (2) 0 to 150 parts by weight of hydrated borax, and/or (3) 0 to 20 parts by weight of glass spheres, so long as at least one of the two components identified in (1) and (2) are used. The compositions may be used as coatings or for molded articles. They do not require use of aluminum trihydrate, or silica flour particles, or other known fillers having fire retardant properties. Yet, the compositions of the invention are found to possess heretofore unknown properties of fire retardancy, ablation, and smoke absorbency.

Inventors

  • 👤 Vance A. Stayner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 00:56
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/38; C08K3/30; C08K3/40; C08K7/00; C08K7/16; C08K7/18; C08K7/20; Y; Y10; Y10S; Y10S260/00; Y10S260/24

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 65 words
A composition comprising about 25 to 90 percent by weight of a curable, synthetic resin, and about 75 to 10 percent by weight of a mixture of at least two of the following reinforcing fillers: (1) up to 150 parts by weight of epsom salt, (2) up to 150 parts by weight of hydrated borax, (3) up to 20 parts by weight of glass spheres.
Claim 2
Dependent Claim 65 words
A composition comprising about 25 to 90 percent by weight of a curable, synthetic resin, and about 75 to 10 percent by weight of a mixture of at least two of the following reinforcing fillers: (1) up to 150 parts by weight of epsom salt, (2) up to 150 parts by weight of hydrated borax, (3) up to 20 parts by weight of glass spheres.
Claim 3
Dependent Claim 25 words
The composition of claim 1 in which the resin comprises about 40 percent by weight, and the filler mixture comprises about 60 percent by weight.
Claim 4
Dependent Claim 33 words
The composition of claim 2 in which the filler mixture comprises about 100 parts by weight epsom salt, about 50 parts by weight hydrated borax, and about 10 parts by weight glass spheres.
Claim 5
Dependent Claim 53 words
For use as a reinforcing filler in a curable, synthetic resin, a dry blend including 1 to 20 parts by weight of glass spheres, and at least one of the following reinforcing fillers: (1) up to 150 parts by weight of epsom salt, (2) up to 150 parts by weight of hydrated borax.
Claim 6
Dependent Claim 53 words
For use as a reinforcing filler in a curable, synthetic resin, a dry blend including 1 to 20 parts by weight of glass spheres, and at least one of the following reinforcing fillers: (1) up to 150 parts by weight of epsom salt, (2) up to 150 parts by weight of hydrated borax.
Claim 7
Dependent Claim 33 words
The composition of claim 4 in which the filler mixture comprises about 100 parts by weight epsom salt, about 50 parts by weight hydrated borax, and about 10 parts by weight glass spheres.

References Cited (Backward Citations)

US1645172A Cited
US1839135A Cited
US2594937A Cited
US2948641A Cited
US3230184A Cited
US3875106A Cited
US3816307A Cited
US4079162A Cited
US4016111A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-08-05 1984-02-04 1984-08-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-08-05 1988-02-04 1988-08-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-08-05 1992-02-04 1992-08-05 $7700.00 Window Closed / Lapsed

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