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US2906734A Expired / Lapsed US ⏱️ 0.0 years remaining

Fast curing organosiloxane resins

Assignee: Dow Silicones Corp
•
Filing: 1957-09-23
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Granted: 1959-09-29
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Expires: 1977-09-23
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Abstract

No abstract record available.

Inventors

  • 👤 Harold A Clark

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 12:12
CPC Classifications
C; C08; C08F; C08F10/00; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/16; C08K5/17; C08K5/19

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 220 words
A COMPOSITION OF MATTER CONSISING ESSENTIALLY OF (1) A COPOLYSILOXANE HAVING A PHENYL TO SILICON RATIO NOT IN EXCESS OF 0.85, A DEGREE OF SUIBSTITUTION OF FROM 1.3 TO 1.7, AND CONTAINING AT LEAST .8% BY WEIGHT SILICONBONDED HYDROXYLS BASED ON THE WEIGHT OF THE POLYSILOXANE, SAID POLYSILOXANE CONSISTING OF FROM 15 TO 45 MOL PERCENT MONOPHENYSILOXANE, FROM 5 TO 55 MOL PERCENT OF A SILOXANE SELECTED FROM THE GROUP CONSISTING OF PHENYLMETHYLSILOXANE AND DIMETHYLSILOXANE, FROM 0 TO 35 MOL PERCENT MONOMETHYLSILOXANE AND FROM 0 TO 25 MOL PERCENT DIPHENYLSILOXANE, (2) AT LEAST .01% BY WEIGHT BASED ON THE WEIGHT OF THE SILOXANE OF A COMPOUND OF THE FORMULA RR''3 NOR'''' IN WHICH R IS OF THE GROUP ALIPHATIC HYFROCARBON RADICALS, HYDROXYLATED ALIPHATIC HYDROCARBON RADICALS, CYCLOALIPHATIC HYDROCARBON RADICALS HYDROXYATED CYCLOALIPHATIC HYDROCARBON RADICALS AND ARALKYL RADICIALS. R'' IS AN ALKYL RADICAL OF LESS THAN 3 CARBON ATOMS AND R'''' IS AN ACYL RADICAL OF THE GROUP CONSISTING OF BENZOYL AND ALIPHATIC ACYL RADICALS OF LESS THAN 5 CARBON ATOMS HAVING NO MORE THAN ONE HALOGEN ATOM BETA TO THE CARBONYL GROUP, AND (3) AT LEAST SUFFICIENT ACID OF THE GROUP CONSISTING OF BENZOIC ACID AND ALIPHATIC MONOCARBOXYLIC ACIDS OF LESS THAN 5 CARBON ATOMS CONTAING NO MORE THAN ONE HALOGEN ATOM BETA TO THE CARBOXYL GROUP, TO RENDER THE COMPOSITION NETURAL.

References Cited (Backward Citations)

CA500159A Cited
US2258222A Cited
US2518160A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1962-09-28 1963-03-30 1963-09-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1966-09-28 1967-03-30 1967-09-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1970-09-28 1971-03-30 1971-09-29 $7700.00 Window Closed / Lapsed

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