US2610169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of thermoplastic siloxanes
Assignee: Dow Silicones Corp
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Filing: 1948-10-27
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Granted: 1952-09-09
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Expires: 1968-10-27
Abstract
No abstract record available.
Inventors
- 👤 Hyde James Franklin
- 👤 Daudt William Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:06
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A THERMOSETTING COMPOSITION OF MATTER COMPRISING A HYDROXYL-FREE, THERMOPLASTIC ORGANO POLYSILOXANE IN WHICH THE ORGANIC RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF METHYL AND ARYL RADICALS, SAID SILOXANE HAVING A DEGREE OF SUBSTITUTION OF FROM 0.9 TO 1.8 ORGANIC RADICALS PER SILICON ATOM, AND A METAL SALT OF A CARBOXYLIC ACID IN WHICH SALT THE METAL IS SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND LEAD, SAID SALT BEING PRESENT IN AMOUNT OF FROM ONE METAL ATOM PER 10,000 SILICON ATOMS TO ONE METAL ATOM PER 50 SILICON ATOMS.
Claim 2
Dependent Claim
91 words
A THERMOSETTING COMPOSITION OF MATTER COMPRISING A HYDROXYL-FREE, THERMOPLASTIC ORGANO POLYSILOXANE IN WHICH THE ORGANIC RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF METHYL AND ARYL RADICALS, SAID SILOXANE HAVING A DEGREE OF SUBSTITUTION OF FROM 0.9 TO 1.8 ORGANIC RADICALS PER SILICON ATOM, AND A METAL SALT OF A CARBOXYLIC ACID IN WHICH SALT THE METAL IS SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND LEAD, SAID SALT BEING PRESENT IN AMOUNT OF FROM ONE METAL ATOM PER 10,000 SILICON ATOMS TO ONE METAL ATOM PER 50 SILICON ATOMS.
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) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |