US2992203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High impact resistant polymers derived primarily from esters of acrylic and methacrylic acids
Assignee: Rohm and Haas Co
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Filing: 1957-03-25
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Granted: 1961-07-11
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Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Protzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:27
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08F265/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A HARD, RIGID, TOUGH, WEATHER-RESISTANT DIMENSIONALLY STABLE POLYMERIC PRODUCT HAVING AN IZOD NOTCH IMPACT STRENGTH OF AT LEAST 1 COMPRISING 75 TO 55 PARTS BY WEIGHT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF MONOMERI ALKYL ACRYLATES HAVING TWO TO EIGHT CARBON ATOMS IN THE ALKYL GROUP AND MIXTURES OF AT LEAST 75% BY WEIGHT OF SUCH AN ACRYLATE WITH ANOTHER MONOMERIC COMPOUND FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ESTERS COPOLYMERIZABLE THEREWITH, SAID MEMBER, WHEN POLYMERIZED BY ITSELF, HAVING A BEND-BRITTLE TEMPERATURE BELOW 0*C., BULK POLYMERIZED WHILE HAVING DISSOLVED THEREIN 25 TO 45 PARTS BY WEIGHT OF A PREFORMED POLYMER OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF METHYL METHACRYLATE, TRICHLOROETHYL METHACRYLATE, CYCLOHEXYL METHACRYLATE, ISOBORNYL METHACRYLATE, ISOBUTYL METHACRYLATE, METHYL-A-CHLOROACRYLATE AND MIXTURES OF AT LEAST 75% BY WEIGHT OF ANY ONE OF SAID MONOMERS WITH ANOTHER COMPOUND FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ESTERS COPOLYMERIZABLE THEREWITH, SAID PREFORMED POLYMER HAVING A HEAT DISTORTION TEMPERATURE ABOVE 65*C.
Claim 2
Dependent Claim
161 words
A HARD, RIGID, TOUGH, WEATHER-RESISTANT DIMENSIONALLY STABLE POLYMERIC PRODUCT HAVING AN IZOD NOTCH IMPACT STRENGTH OF AT LEAST 1 COMPRISING 75 TO 55 PARTS BY WEIGHT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF MONOMERI ALKYL ACRYLATES HAVING TWO TO EIGHT CARBON ATOMS IN THE ALKYL GROUP AND MIXTURES OF AT LEAST 75% BY WEIGHT OF SUCH AN ACRYLATE WITH ANOTHER MONOMERIC COMPOUND FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ESTERS COPOLYMERIZABLE THEREWITH, SAID MEMBER, WHEN POLYMERIZED BY ITSELF, HAVING A BEND-BRITTLE TEMPERATURE BELOW 0*C., BULK POLYMERIZED WHILE HAVING DISSOLVED THEREIN 25 TO 45 PARTS BY WEIGHT OF A PREFORMED POLYMER OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF METHYL METHACRYLATE, TRICHLOROETHYL METHACRYLATE, CYCLOHEXYL METHACRYLATE, ISOBORNYL METHACRYLATE, ISOBUTYL METHACRYLATE, METHYL-A-CHLOROACRYLATE AND MIXTURES OF AT LEAST 75% BY WEIGHT OF ANY ONE OF SAID MONOMERS WITH ANOTHER COMPOUND FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ESTERS COPOLYMERIZABLE THEREWITH, SAID PREFORMED POLYMER HAVING A HEAT DISTORTION TEMPERATURE ABOVE 65*C.
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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |