US3027336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous, hydrophilic acrylic resin structure and method for preparing same
Assignee: Roehm GmbH Darmstadt
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Filing: 1958-03-07
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Granted: 1962-03-27
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Expires: 1978-03-07
Abstract
No abstract record available.
Inventors
- 👤 Gotz Franz
- 👤 Will Gunther
- 👤 Will Helmuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/28; C08J9/283; C08J9/04; C08J2351/00; Y; Y10; Y10S; Y10S521/00; Y10S521/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A POROUS, HYDROPHILIC RESIN PREPARED BY HARDENING, IN THE PRESENCE OF A REDOX CATALYST SYSTEM, A MIXTURE OF (A) METHYLMETHACRYLATE MONOMER WITH (B) ABOUT 1 TO 50 PARTS BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF METHYLMETHACRYLATE, HOMOLPMER, METHYLMETHACRYLATE-ETHYLACRYLATE COPOLYMER AND MIXTURES THEREOF PER 10 PARTS BY WEIGHT OF MONOMER, (C) A HYDROPHILLIC POREFORMING LIQUID SELECTED FROM THE GROUP CONSISTING OF WATER AND A MIXTURE OF WATER WITH A LOW MOLECULAR WEIGHT ALCOHOL, AND (D) A CARBOXYLIC ACID GROUP-CONTAINING COPOLYMER OF METHYLMETHACRYLATE AND METHACRYLIC ACID, COMPONENTS (A) AND (B) REPRESENTING AT LEAST ABOUT 50% BY WEIGHT OF THE MIXTURE.
Claim 2
Dependent Claim
101 words
A POROUS, HYDROPHILIC RESIN PREPARED BY HARDENING, IN THE PRESENCE OF A REDOX CATALYST SYSTEM, A MIXTURE OF (A) METHYLMETHACRYLATE MONOMER WITH (B) ABOUT 1 TO 50 PARTS BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF METHYLMETHACRYLATE, HOMOLPMER, METHYLMETHACRYLATE-ETHYLACRYLATE COPOLYMER AND MIXTURES THEREOF PER 10 PARTS BY WEIGHT OF MONOMER, (C) A HYDROPHILLIC POREFORMING LIQUID SELECTED FROM THE GROUP CONSISTING OF WATER AND A MIXTURE OF WATER WITH A LOW MOLECULAR WEIGHT ALCOHOL, AND (D) A CARBOXYLIC ACID GROUP-CONTAINING COPOLYMER OF METHYLMETHACRYLATE AND METHACRYLIC ACID, COMPONENTS (A) AND (B) REPRESENTING AT LEAST ABOUT 50% BY WEIGHT OF THE MIXTURE.
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) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |