US3864137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen peroxide blowing agent for silicate foams
Assignee: Bayer AG
•
Filing: 1973-05-24
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Granted: 1975-02-04
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Expires: 1993-05-24
Abstract
Abstract In the production of foams by mixing an aqueous silicate solution with a blowing agent and a hardener which splits off acid the improvement which comprises using hydrogen peroxide as the blowing agent.
Inventors
- 👤 Bonin Wulf Van
- 👤 Ulrich Nehen
- 👤 Gizycki Ulrich Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:42
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/005; C01; C01B; C01B33/00; C01B33/20; C01B33/32; C04B28/00; C04B28/24; C04B28/26; C10; C10M; C10M2201/00; C10M2201/10; C10M2201/105; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
The process according to claim 1, in which the hydrogen peroxide is used as aqueous solution of about 3 to 50% concentration by weight.
Claim 2
Dependent Claim
26 words
The process according to claim 2, in which the hydrogen peroxide is employed in about 0.05 to 20% by weight of the entire mass undergoing foaming.
Claim 3
Dependent Claim
26 words
The process according to claim 2, in which the hydrogen peroxide is employed in about 0.10 to 10% by weight of the entire mass undergoing foaming.
Claim 4
Dependent Claim
36 words
The process according to claim 4, in which an organic blowing agent selected from the group consisting of hydrocarbons and halogenated hydrocarbons boiling from about -25* to 50*C is present in addition to the hydrogen peroxide.
References Cited (Backward Citations)
US3095312A
Cited
US3725095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |