US3254052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing chloral
Assignee: Diamond Shamrock Corp
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Filing: 1962-05-31
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Granted: 1966-05-31
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Expires: 1982-05-31
Abstract
No abstract record available.
Inventors
- 👤 George H Mccain
- 👤 Donald E Hudgin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:19
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/14; B; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/25; B29C48/88; B29C48/911; B29C48/9135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS FOR POLYMRIZING CHLORAL MONOMER DIRECTLY TO A TOUGH AND DURABLE FILM OF MOLECULAR WEIGHT POLYCHLORAL WHICH COMPRISES THROUGHLY MIXING IN A REACTION CHAMBER LIQUID CHLORAL AND A POLYMERIZATION CATALYST SELECTED FROM THE GROUP CONSISTING OF 2,6-DIMETHOXYPHENYL LITHIUM, 9-FLUORENYL LITHIUM AND COMBINATIONS THEREOF WITH DIETHYL ZINC, PARTIALLY POLYMERIZING SAID CHLORAL MONOMER IN THE REACTION CHAMBER, REMOVING THREFROM A FLOWABLE MIXTURE OF CHLORAL POLYMER, UNREACTED CHLORAL AND POLYMERIZATION CATALYST AND DEPOSITING SAID MIXTURE ON A SOLID SUBSTRATE IN A SECOND REACTION CHAMBER, COMPLETING THE POLYMERIZATION OF THE POLYMERIC MATERIAL AND FORMING A FILM THEREOF WHILE MAINTAINING IT AT THE POLYMERIZATION
Claim 2
Dependent Claim
100 words
A PROCESS FOR POLYMRIZING CHLORAL MONOMER DIRECTLY TO A TOUGH AND DURABLE FILM OF MOLECULAR WEIGHT POLYCHLORAL WHICH COMPRISES THROUGHLY MIXING IN A REACTION CHAMBER LIQUID CHLORAL AND A POLYMERIZATION CATALYST SELECTED FROM THE GROUP CONSISTING OF 2,6-DIMETHOXYPHENYL LITHIUM, 9-FLUORENYL LITHIUM AND COMBINATIONS THEREOF WITH DIETHYL ZINC, PARTIALLY POLYMERIZING SAID CHLORAL MONOMER IN THE REACTION CHAMBER, REMOVING THREFROM A FLOWABLE MIXTURE OF CHLORAL POLYMER, UNREACTED CHLORAL AND POLYMERIZATION CATALYST AND DEPOSITING SAID MIXTURE ON A SOLID SUBSTRATE IN A SECOND REACTION CHAMBER, COMPLETING THE POLYMERIZATION OF THE POLYMERIC MATERIAL AND FORMING A FILM THEREOF WHILE MAINTAINING IT AT THE POLYMERIZATION
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |