US2604458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizing vinylidene chloridevinyl chloride copolymers
Assignee: Dow Chemical Co
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Filing: 1950-06-02
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Granted: 1952-07-22
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Expires: 1970-06-02
Abstract
No abstract record available.
Inventors
- 👤 Carl B Havens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:21
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32; C08K5/00; C08K5/04; C08K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A COMPOSITION OF MATTER COMPRISING A COPOLYMER OF FROM 95 TO 85 PER CENT VINYLIDENE CHLORIDE, BALANCE VINYL CHLORIDE, CONTAINING AT LEAST 0.1 PER CENT BY WEIGHT OF AN ORGANIC PEROXIDE CATALYST RESIDUE, CALCULATED AS BENZOYL PEROXIDE, FROM 0.15 TO 3 PARTS BY WEIGHT, FOR EACH PART OF PEROXIDE, OF A DIHYDRIC PHENOL SELECTED FROM THE GROUP CONSISTING OF PYROCATECHOL, RESORCINOL, HYDROQUINONE AND PARA-TERTIARY BUTYL CATECHOL; FROM 0.5 TO 3 PER CENT, BASED ON THE WEIGHT OF COPOLYMER, OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TETRASODIUM PYROPHOSPHATE AND DISODIUM ORTHOPHOSPHATE, AND FROM 3 TO 15 PER CENT OF A PLASTICIZER FOR THE COPOLYMER.
Claim 2
Dependent Claim
105 words
A COMPOSITION OF MATTER COMPRISING A COPOLYMER OF FROM 95 TO 85 PER CENT VINYLIDENE CHLORIDE, BALANCE VINYL CHLORIDE, CONTAINING AT LEAST 0.1 PER CENT BY WEIGHT OF AN ORGANIC PEROXIDE CATALYST RESIDUE, CALCULATED AS BENZOYL PEROXIDE, FROM 0.15 TO 3 PARTS BY WEIGHT, FOR EACH PART OF PEROXIDE, OF A DIHYDRIC PHENOL SELECTED FROM THE GROUP CONSISTING OF PYROCATECHOL, RESORCINOL, HYDROQUINONE AND PARA-TERTIARY BUTYL CATECHOL; FROM 0.5 TO 3 PER CENT, BASED ON THE WEIGHT OF COPOLYMER, OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TETRASODIUM PYROPHOSPHATE AND DISODIUM ORTHOPHOSPHATE, AND FROM 3 TO 15 PER CENT OF A PLASTICIZER FOR THE COPOLYMER.
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) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |