Patent US2798056A successfully refreshed from Google Patents.
US2798056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions containing chlorinated rubber and method of forming same
Assignee: Hercules Powder Co
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Filing: 1953-06-17
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Granted: 1957-07-02
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Expires: 1973-06-17
Abstract
No abstract record available.
Inventors
- 👤 Victor J Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:50
CPC Classifications
C; C09; C09D; C09D115/00; C09D115/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
THE METHOD OF FORMING A PROTECTIVE COATING COMPOSITION WHEREIN FINELY DIVIDED PRECIPITATED PARTICLES COMPRISING CHLORINATED RUBBER ARE SUSPENDED IN A NONSOLVENT MIXTURE OF AROMATIC AND ALIPHATIC HYDROCARBONS WHICH COMPRISES DISSOLVING CHLORINATED RUBBER IN A NORMALLY LIQUID AROMATIC HYDROCARBON SOLVENT FOR SAID CHLORINATED RUBBER; ADDING TO THE RESULTING CHLORINATED RUBBER SOLUTION A VARNISH CONTAINING A MALEIC ANHYDRIDEMODIFIED PENTAERYTHRITOL ESTER OF ROSIN AND HAVING A VISCOSITY GREATER THAN 0.65 STOKE AND LESS THAN 3.7 STOKES AS MEASURED IN A 50% SOLIDS SOLUTION WITH A SOLVENT HAVING A KAURI-BUTANOL VALUE OF 37-38 TO FORM A CLEAR BLEND; AND THEN DILUTING THE RESULTING CLEAR BLEND WITH A NORMALLY LIQUID ALIPHATIC HYDROCARBON HAVING A BOILING POINT NOT ABOVE THE BOILING POINT OF SAID AROMATIC HYDROCARBON UNTIL FINELY DIVIDED PARTICLES CONTAINING CHLORINATED RUBBER ARE PRECIPTATED TO FORM A SUSPENSION OF SAID PARTICLES IN A NONSOLVENT MIXTURE OF AROMATIC AND ALIPHATIC HYDROCARBONS, THE AROMATIC HYDROCARBON, CONTENT OF SAID NONSOLVENT MIXTURE BEING FROM 15% TO 45% BY WEIGHT, THE RESULTING COMPOSITION CONTAINING FROM 5% TO 40% TOTAL SOLIDS, SAID CHLORINATED RUBBER BEING FROM 1% TO 5/% OF SAID TOTAL SOLIDS.
Claim 2
Independent Claim
182 words
THE METHOD OF FORMING A PROTECTIVE COATING COMPOSITION WHEREIN FINELY DIVIDED PRECIPITATED PARTICLES COMPRISING CHLORINATED RUBBER ARE SUSPENDED IN A NONSOLVENT MIXTURE OF AROMATIC AND ALIPHATIC HYDROCARBONS WHICH COMPRISES DISSOLVING CHLORINATED RUBBER IN A NORMALLY LIQUID AROMATIC HYDROCARBON SOLVENT FOR SAID CHLORINATED RUBBER; ADDING TO THE RESULTING CHLORINATED RUBBER SOLUTION A VARNISH CONTAINING A MALEIC ANHYDRIDEMODIFIED PENTAERYTHRITOL ESTER OF ROSIN AND HAVING A VISCOSITY GREATER THAN 0.65 STOKE AND LESS THAN 3.7 STOKES AS MEASURED IN A 50% SOLIDS SOLUTION WITH A SOLVENT HAVING A KAURI-BUTANOL VALUE OF 37-38 TO FORM A CLEAR BLEND; AND THEN DILUTING THE RESULTING CLEAR BLEND WITH A NORMALLY LIQUID ALIPHATIC HYDROCARBON HAVING A BOILING POINT NOT ABOVE THE BOILING POINT OF SAID AROMATIC HYDROCARBON UNTIL FINELY DIVIDED PARTICLES CONTAINING CHLORINATED RUBBER ARE PRECIPTATED TO FORM A SUSPENSION OF SAID PARTICLES IN A NONSOLVENT MIXTURE OF AROMATIC AND ALIPHATIC HYDROCARBONS, THE AROMATIC HYDROCARBON, CONTENT OF SAID NONSOLVENT MIXTURE BEING FROM 15% TO 45% BY WEIGHT, THE RESULTING COMPOSITION CONTAINING FROM 5% TO 40% TOTAL SOLIDS, SAID CHLORINATED RUBBER BEING FROM 1% TO 5/% OF SAID TOTAL SOLIDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |