US2575553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing stable aqueous dispersions of polymer containing plasticizers therefor
Assignee: Shell Development Co
•
Filing: 1949-02-08
•
Granted: 1951-11-20
•
Expires: 1969-02-08
Abstract
No abstract record available.
Inventors
- 👤 Egbert Cornelis Hendrik Kolvoort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:04
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; C08J3/215; C09; C09D; C09D133/00; C09K; C09K23/00; C08J2357/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR THE PRODUCTION OF AN AQUEOUS DISPERSION OF SOLID RESINOUS POLYMER CONTAINING A PLASTICIZER FOR SAID POLYMER, SAID PLASTICIZER BEING A SUBSTANTIALLY WATER-INSOLUBLE ESTER COMPATIBLE WITH SAID RESINOUS POLYMER AND BOILING ABOVE 200* C., WHICH COMPRISES MIXING A PREDOMINANT PROPORTION OF SAID PLASTICIZER IN LIQUID CONDITION WITH A SMALL QUANTITY OF AN AQUEOUS SOLUTION CONTAINING A SUBSTANTIAL PROPORTION OF AN EMULSIFYING AGENT SO AS TO THEREBY FORM A JELLIED MIXTURE, AND THEN MIXING SUFFICIENT OF AN EMULSIFIED AQUEOUS SUSPENSION OF DISPERSED PARTICLES OF SAID SOLID RESINOUS POLYMER WITH SAID JELLIED MIXTURE SO THAT AN AQUEOUS EMULSION IS FORMED WHEREIN WATER CONSTITUTES THE CONTINUOUS PHASE.
Claim 2
Dependent Claim
106 words
A PROCESS FOR THE PRODUCTION OF AN AQUEOUS DISPERSION OF SOLID RESINOUS POLYMER CONTAINING A PLASTICIZER FOR SAID POLYMER, SAID PLASTICIZER BEING A SUBSTANTIALLY WATER-INSOLUBLE ESTER COMPATIBLE WITH SAID RESINOUS POLYMER AND BOILING ABOVE 200* C., WHICH COMPRISES MIXING A PREDOMINANT PROPORTION OF SAID PLASTICIZER IN LIQUID CONDITION WITH A SMALL QUANTITY OF AN AQUEOUS SOLUTION CONTAINING A SUBSTANTIAL PROPORTION OF AN EMULSIFYING AGENT SO AS TO THEREBY FORM A JELLIED MIXTURE, AND THEN MIXING SUFFICIENT OF AN EMULSIFIED AQUEOUS SUSPENSION OF DISPERSED PARTICLES OF SAID SOLID RESINOUS POLYMER WITH SAID JELLIED MIXTURE SO THAT AN AQUEOUS EMULSION IS FORMED WHEREIN WATER CONSTITUTES THE CONTINUOUS PHASE.
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) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |