Patent US5208491A successfully refreshed from Google Patents.
US3948822A
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Latex for forming non-gelling vulcanizable solid foam
Assignee: Chemische Industrie Aku Goodrich BV
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Filing: 1973-07-13
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Granted: 1976-04-06
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Expires: 1993-07-13
Abstract
Abstract A process for the preparation of a latex composition which is processable into a non-gelling vulcanizable solid foam and a process for coating a substrate with said foam.
Inventors
- 👤 Popke Wietsma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:50
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; C08K; C08K5/00; C08K5/36; C08K5/41; C08J2321/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
65 words
A process for the preparation of a rubber latex composition adapted to be converted into a wet foam and dried without substantial gelling to form a solid foam which comprises mixing with the latex from about 1.5 to about 8 parts by weight disodium-N-octadecyl sulfosuccinamate and from about 0.1 to about 1 part sodium formaldehyde sulfoxylate by weight per 100 parts by weight dry latex.
Claim 2
Dependent Claim
65 words
A process for the preparation of a rubber latex composition adapted to be converted into a wet foam and dried without substantial gelling to form a solid foam which comprises mixing with the latex from about 1.5 to about 8 parts by weight disodium-N-octadecyl sulfosuccinamate and from about 0.1 to about 1 part sodium formaldehyde sulfoxylate by weight per 100 parts by weight dry latex.
Claim 3
Dependent Claim
31 words
Process according to claim 1, characterized in that to 100 parts by weight of dry latex also 20 to 500 parts by weight of a filler are incorporated into the composition.
Claim 4
Dependent Claim
15 words
Latex composition containing a rubber latex, di-sodium-N-octadecyl sulfosuccinamate, sodium formaldehyde sulfoxylate and a vulcanization system.
Claim 5
Dependent Claim
15 words
Latex composition containing a rubber latex, di-sodium-N-octadecyl sulfosuccinamate, sodium formaldehyde sulfoxylate and a vulcanization system.
References Cited (Backward Citations)
US3320201A
Cited
US3491033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |