Patent US4137198A successfully refreshed from Google Patents.
US4137198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer-inorganic foam
Assignee: Individual
•
Filing: 1973-11-02
•
Granted: 1979-01-30
•
Expires: 1993-11-02
Abstract
Abstract Polymer-inorganic hybrid foam, having utility as construction materials, comprised of a continuous plastic phase or backbone structure of unexpanded polymer, e.g. polyvinyl acetate, vinyl-acrylic copolymer or asphalt or bituminous pitch, having distributed therein particles of an inorganic phase such as Portland cement particles, such inorganic phase being substantially free of sand, rock or aggregate, the cells of the hybrid foam being highly uniform, such hybrid foam being strong, and load supporting, and of low density, and being fire resistant and thermally insulating.
Inventors
- 👤 Carrol C. Sachs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:30
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C08; C08J; C08J9/00; C08J9/30
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
147 words
A polymer-inorganic cellular hybrid foam of low density, and which is load supporting, fire resistant, thermally insulating and has low thermal expansion, consisting essentially of a plastic phase matrix formed of unexpanded polymer particles selected from the group consisting of polyvinyl acetate, butadiene-styrene and silicone resins, and an inorganic phase formed of particles selected from the group consisting of Portland cement and gypsum, substantially uniformly distributed through said plastic phase, said inorganic phase being substantially free of sand, rock or aggregate, intersticial compounds or complexes being formed between said inorganic phase and said plastic phase, said hybrid foam having a density ranging from about 10 to about 80 pounds per cu. ft., said foam containing about 300 to about 1,000 parts of said inorganic phase and about 50 to about 100 parts of said polymer particles, by weight, said foam being substantially free of surface active agents.
Claim 2
Dependent Claim
147 words
A polymer-inorganic cellular hybrid foam of low density, and which is load supporting, fire resistant, thermally insulating and has low thermal expansion, consisting essentially of a plastic phase matrix formed of unexpanded polymer particles selected from the group consisting of polyvinyl acetate, butadiene-styrene and silicone resins, and an inorganic phase formed of particles selected from the group consisting of Portland cement and gypsum, substantially uniformly distributed through said plastic phase, said inorganic phase being substantially free of sand, rock or aggregate, intersticial compounds or complexes being formed between said inorganic phase and said plastic phase, said hybrid foam having a density ranging from about 10 to about 80 pounds per cu. ft., said foam containing about 300 to about 1,000 parts of said inorganic phase and about 50 to about 100 parts of said polymer particles, by weight, said foam being substantially free of surface active agents.
Claim 3
Dependent Claim
22 words
A polymer-inorganic hybrid foam as defined in claim 1, the cells of said hybrid foam being highly uniform, said foam being self-skinning.
Claim 4
Dependent Claim
25 words
A polymer-inorganic hybrid foam as defined in claim 1, said hybrid foam having a density ranging from about 15 to about 45 pounds per cu.ft.
Claim 5
Dependent Claim
54 words
A polymer-inorganic hybrid foam as defined in claim 1, said foam having a compressive strength of from about 400 to about 2,000 psi, a Rockwell hardness from about 80 to about 125, and a K factor of thermal insulation of about 0.15 to about 0.5, said foam having low shrinkage and low thermal expansion.
Claim 6
Dependent Claim
17 words
A polymer-inorganic hybrid foam as defined in claim 1, said hybrid foam being reinforced with fiberglass roving.
Claim 7
Dependent Claim
18 words
A polymer-inorganic hybrid foam as defined in claim 1, said inorganic phase being Portland cement free of gypsum.
Claim 8
Dependent Claim
18 words
A polymer-inorganic hybrid foam as defined in claim 4, said inorganic phase being Portland cement free of gypsum.
Claim 9
Dependent Claim
29 words
A polymer-inorganic hybrid foam as defined in claim 1, said inorganic phase being gypsum and about 0 to about 25 percent of Portland cement by weight of total inorganics.
Claim 10
Dependent Claim
15 words
A polymer-inorganic hybrid foam as defined in claim 1, said polymer particles being polyvinyl acetate.
Claim 11
Dependent Claim
25 words
A polymer-inorganic hybrid foam as defined in claim 1, said polymer particles being polyvinyl acetate, and said inorganic phase being Portland cement free of gypsum.
Claim 12
Dependent Claim
16 words
A polymer-inorganic hybrid foam as defined in claim 9, said polymer particles additionally including polyvinyl alcohol.
Claim 13
Dependent Claim
17 words
A polymer-inorganic hybrid foam as defined in claim 9, said polymer particles additionally including vinyl acetate-acrylic copolymer.
Claim 14
Dependent Claim
30 words
A polymer-inorganic hybrid foam as defined in claim 1, said polymer particles being a mixture of about 75% polyvinyl acetate and about 25% polyvinylidene chloride, based on the polymer phase.
Claim 15
Dependent Claim
35 words
A polymer-inorganic hybrid foam as defined in claim 1, said foam additionally including iron oxide in an amount of about 1 to about 50 parts, to about 600 parts of said inorganic phase, by weight.
Claim 16
Dependent Claim
34 words
A polymer-inorganic hybrid foam as defined in claim 1, said foam additionally including carbon in an amount of about 1 to about 50 parts, to about 600 parts of said inorganic phase, by weight.
Claim 17
Dependent Claim
38 words
A polymer-inorganic hybrid foam as defined in claim 1, said foam additionally including iron oxide and carbon, each in an amount of about 1 to about 50 parts, to about 600 parts of said inorganic phase, by weight.
Claim 18
Dependent Claim
35 words
A polymer-inorganic hybrid foam as defined in claim 10, said foam additionally including iron oxide in an amount of about 1 to about 50 parts, to about 600 parts of said inorganic phase, by weight.
Claim 19
Dependent Claim
34 words
A polymer-inorganic hybrid foam as defined in claim 10, said foam additionally including carbon in an amount of about 1 to about 50 parts, to about 600 parts of said inorganic phase, by weight.
Claim 20
Dependent Claim
38 words
A polymer-inorganic hybrid foam as defined in claim 13, said foam additionally including iron oxide and carbon, each in an amount of about 1 to about 50 parts, to about 600 parts of said inorganic phase, by weight.
References Cited (Backward Citations)
US2733995A
Cited
US2273367A
Cited
US2576955A
Cited
US2581295A
Cited
US2442321A
Cited
US2536375A
Cited
US2664406A
Cited
US3043790A
Cited
US3256229A
Cited
US3228905A
Cited
US3298973A
Cited
US3389094A
Cited
US3483156A
Cited
US3748290A
Cited
US3819565A
Cited
US3822229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |