Patent US2843553A successfully refreshed from Google Patents.
US2843553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blend of dextran-modified polyester resins with metallo-organo complexes
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1955-01-17
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Granted: 1958-07-15
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Expires: 1975-01-17
Abstract
No abstract record available.
Inventors
- 👤 Elwood P Wenzelberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:04
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
AS A NEW COMPOSITION OF MATTER, A BLEND OF (1) A POLYMER RESIN OBTAINED BY MIXING FROM 30 TO 75% BY WEIGHT OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF UNSATURATED POLYCARBOXYLIC ACIDS AND ANHYDRIDES THEREOF, 15 TO 60% BY WEIGHT OF A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCEROL AND ETHYLENE GLYCOL, AND 5 TO 25% BY WEIGHT OF A DEXTRAN, AND HEATING THE RESULTANT MIXTURE AT A TEMPERATURE OF 50*C. TO 300*C. UNTIL A CLEAR, RESINOUS LIQUID REACTION PRODUCT IS PRODUCED, AND (II) A METALLO-ORGANIC COMPLEX OBTAINED BY REACTING AT 150*C. (A) 4.7% TO 5.0% BY WEIGHT OF A COMPOUND FROM THE GROUP CONSISTING OF OXIDES, HYDROXIDES AND SALTS OF A METAL FROM THE GROUP CONSISTING OF ZINC, CADMIUM, MAGNESIUM AND LEAD, (B) 70% TO 87.4% BY WEIGHT OF A PEHNOL, AND (C) 7.9% TO 25% BY WEIGHT OF A NITROGEN-CONTAINING COMPOUND OF THE GROUP CONSISTING OF AMMONIA, AMMONIUM HYDROXIDE AND ALKYLENE POLYAMINES.
Claim 2
Dependent Claim
158 words
AS A NEW COMPOSITION OF MATTER, A BLEND OF (1) A POLYMER RESIN OBTAINED BY MIXING FROM 30 TO 75% BY WEIGHT OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF UNSATURATED POLYCARBOXYLIC ACIDS AND ANHYDRIDES THEREOF, 15 TO 60% BY WEIGHT OF A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCEROL AND ETHYLENE GLYCOL, AND 5 TO 25% BY WEIGHT OF A DEXTRAN, AND HEATING THE RESULTANT MIXTURE AT A TEMPERATURE OF 50*C. TO 300*C. UNTIL A CLEAR, RESINOUS LIQUID REACTION PRODUCT IS PRODUCED, AND (II) A METALLO-ORGANIC COMPLEX OBTAINED BY REACTING AT 150*C. (A) 4.7% TO 5.0% BY WEIGHT OF A COMPOUND FROM THE GROUP CONSISTING OF OXIDES, HYDROXIDES AND SALTS OF A METAL FROM THE GROUP CONSISTING OF ZINC, CADMIUM, MAGNESIUM AND LEAD, (B) 70% TO 87.4% BY WEIGHT OF A PEHNOL, AND (C) 7.9% TO 25% BY WEIGHT OF A NITROGEN-CONTAINING COMPOUND OF THE GROUP CONSISTING OF AMMONIA, AMMONIUM HYDROXIDE AND ALKYLENE POLYAMINES.
References Cited (Backward Citations)
US1108329A
Cited
US2624768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |