US3055856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous suspension of carbon black, apparatus and method for preparing same, method for mixing same with rubber, and product obtained thereby
Assignee: DSM Copolymer Inc
•
Filing: 1958-12-30
•
Granted: 1962-09-25
•
Expires: 1978-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jr John D Sutherland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:08
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; C08J3/215; C08K; C08K3/00; C08K3/02; C08K3/04; C08L; C08L21/00; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C09D; C09D17/00; C09D17/004; C09D17/005; C01; C01P; C01P2004/00; C01P2004/50; C08J2321/00; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
118 words
A METHOD OF PREPARING A DISPERSION OF CARBON BLACK IN RUBBERY POLYMER COMPRISING THE STEPS OF COMMINUTING PELLETIZED CARBON BLACK BY GRINDING IN THE DRY STATE, SUSPENDING COMMINUTED CARABON BLACK IN A GASEOUS MEDIUM INCLUDING STEAM, INTIMATELY CONTACTING THE GASEOUS SUSPENSION OF COMMINUTED CARBON BLACK WITH AQUEOUS MEDIUM TO CONDENSE STEAM AND PRODUCE A SUSPENSION OF CARBON BLACK IN THE AQUEOUS MEDIUM, MIXING THE RESULTING AQUEOUS SUSPENSION OF CARBON BLACK WITH A RUBBERY POLYMER IN THE FORM OF LATEX, THE RUBBERY POLYMER BEING SELECTED FROM THE GRAOUP CONSISTING OF NATURAL RUBBER, POLYCHLOROPRENE, HOMO-POLYMERS OF CONJUGATED DIOLEFINS, COPOLYMERS OF CONJUGATED DIOLEFINS AND MONO-ETHYLENICALLY UNSATURATED MONOMERS, AND MIXTURES THEREOF, AND COAGULATING THE RESULTING MIXTURE BY ADDING A COAGULATING AGENT THERETO.
Claim 2
Independent Claim
118 words
A METHOD OF PREPARING A DISPERSION OF CARBON BLACK IN RUBBERY POLYMER COMPRISING THE STEPS OF COMMINUTING PELLETIZED CARBON BLACK BY GRINDING IN THE DRY STATE, SUSPENDING COMMINUTED CARABON BLACK IN A GASEOUS MEDIUM INCLUDING STEAM, INTIMATELY CONTACTING THE GASEOUS SUSPENSION OF COMMINUTED CARBON BLACK WITH AQUEOUS MEDIUM TO CONDENSE STEAM AND PRODUCE A SUSPENSION OF CARBON BLACK IN THE AQUEOUS MEDIUM, MIXING THE RESULTING AQUEOUS SUSPENSION OF CARBON BLACK WITH A RUBBERY POLYMER IN THE FORM OF LATEX, THE RUBBERY POLYMER BEING SELECTED FROM THE GRAOUP CONSISTING OF NATURAL RUBBER, POLYCHLOROPRENE, HOMO-POLYMERS OF CONJUGATED DIOLEFINS, COPOLYMERS OF CONJUGATED DIOLEFINS AND MONO-ETHYLENICALLY UNSATURATED MONOMERS, AND MIXTURES THEREOF, AND COAGULATING THE RESULTING MIXTURE BY ADDING A COAGULATING AGENT THERETO.
Claim 3
Dependent Claim
16 words
THE METHOD OF CLAIM 15 WHEREIN THE RUBBERY POLYMER IS A COPOLYMER OF BUTADIENE AND STYRENE.
References Cited (Backward Citations)
US2585659A
Cited
US2769795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |