US2861898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel coated particulate foamable styrene polymer compositions
Assignee: Monsanto Chemicals Ltd
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Filing: 1956-09-10
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Granted: 1958-11-25
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Expires: 1976-09-10
Abstract
No abstract record available.
Inventors
- 👤 Platzer Norbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:24
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/22; C08J9/224; C08J2325/00; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10S264/13; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2998
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD FOR PREPARING A PARTICULATE FOAMABLE STYRENE POLYMER COMPOSITION HAVING INCORPORATED THEREIN A VOLATILE ORGANIC COMPOUND AS A FOAMING AGENT AND HAVING DEPOSITED ON THE SURFACE THEREOF A MATERIAL OF THE GROUP CONSISTING OF WATER-INSOLUBLE ALKALINE EARTH METAL SILICATES, WATER-INSOLUBLE ALUMINUM SILICATES AND MIXTURES THEREOF WHICH COMPRISES SEQUENTIALLY COATING A PARTICULATE FOAMABLE STYRENE POLYMER WITH (A) A WATER SOLUTION OF A MATERIAL OF THE GROUP CONSISTING OF ALKALINE EARTH METAL SALTS, ALUMINUM SALTS AND MIXTURES THEREOF AND (B) A WATER SALTS COATED ON THE PARTICULATE STYRENE POLYMER BEING SUFFICIENT TO DEPOSIT UPON THE POLYMER PARTICLES 0.1-5.0 WEIGHT PERCENT OF WATER-INSOLUBLE SILICATE COMPOUND.
Claim 2
Independent Claim
103 words
THE METHOD FOR PREPARING A PARTICULATE FOAMABLE STYRENE POLYMER COMPOSITION HAVING INCORPORATED THEREIN A VOLATILE ORGANIC COMPOUND AS A FOAMING AGENT AND HAVING DEPOSITED ON THE SURFACE THEREOF A MATERIAL OF THE GROUP CONSISTING OF WATER-INSOLUBLE ALKALINE EARTH METAL SILICATES, WATER-INSOLUBLE ALUMINUM SILICATES AND MIXTURES THEREOF WHICH COMPRISES SEQUENTIALLY COATING A PARTICULATE FOAMABLE STYRENE POLYMER WITH (A) A WATER SOLUTION OF A MATERIAL OF THE GROUP CONSISTING OF ALKALINE EARTH METAL SALTS, ALUMINUM SALTS AND MIXTURES THEREOF AND (B) A WATER SALTS COATED ON THE PARTICULATE STYRENE POLYMER BEING SUFFICIENT TO DEPOSIT UPON THE POLYMER PARTICLES 0.1-5.0 WEIGHT PERCENT OF WATER-INSOLUBLE SILICATE COMPOUND.
References Cited (Backward Citations)
US1876629A
Cited
US1421888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |