US3336243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenol-formaldehyde resin composition
Assignee: Dow Chemical Co
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Filing: 1963-11-04
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Granted: 1967-08-15
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Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Walter L Garrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:35
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08L; C08L61/00; C08L61/04; C08L61/06; C08L33/00; C08L33/24; C08L33/26; C08L47/00; C08L9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN A LIQUID THERMOSETTING PHENOL-FORMALDEHYDE RESOLE RESIN COMPOSITION, THE IMPROVEMENT WHICH CONSISTS ESSENTIALLY OF INCORPORATING THEREIN ABOUT 0.5-10 WEIGHT PERCENT BASED ON PHENOLIC RESIN OF A RUBBERY C4-C6 ALKADIENE-ACRYLAMIDE COPOLYMER DISPERSED IN A LIQUID DIOL, SAID COPOLYMER DISPERSION BEING PREPARED BY THE ADDITION POLYMERIZATION OF (A) ABOUT 50-95 WEIGHT PECENT OF C4-C6 ALKADIENE MONOMER SELECTED FROM THE GROUP CONSISTING OF 1,3BUTADIENE, ISOPRENE AND 2,3-DIMETHYL-1,3-BUTADIENE, AND (B) A COMPLEMENTARY AMOUNT OF ABOUT 50-5 WEIGHT PERCENT OF AN ACRYLAMIDE MONOMER HAVING THE FORMULA:
Claim 2
Dependent Claim
81 words
IN A LIQUID THERMOSETTING PHENOL-FORMALDEHYDE RESOLE RESIN COMPOSITION, THE IMPROVEMENT WHICH CONSISTS ESSENTIALLY OF INCORPORATING THEREIN ABOUT 0.5-10 WEIGHT PERCENT BASED ON PHENOLIC RESIN OF A RUBBERY C4-C6 ALKADIENE-ACRYLAMIDE COPOLYMER DISPERSED IN A LIQUID DIOL, SAID COPOLYMER DISPERSION BEING PREPARED BY THE ADDITION POLYMERIZATION OF (A) ABOUT 50-95 WEIGHT PECENT OF C4-C6 ALKADIENE MONOMER SELECTED FROM THE GROUP CONSISTING OF 1,3BUTADIENE, ISOPRENE AND 2,3-DIMETHYL-1,3-BUTADIENE, AND (B) A COMPLEMENTARY AMOUNT OF ABOUT 50-5 WEIGHT PERCENT OF AN ACRYLAMIDE MONOMER HAVING THE FORMULA:
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |