Latex-modified mortar compositions
Abstract
Abstract THE INVENTION IS DIRECTED TO HIGH STRENGTH PORTLAND CEMENT MORTAR COMPOSITIONS MODIFIED WITH CERTAIN VINYLIDENE CHLORIDE POLYMER LATEXES AND CONTAINING IN ADDITION, SPECIFIED TYPES OF FINELY DIVIDED NATURALLY OCCURRING CARBONATE MATERIALS COMPOSED OF A NATURAL CARBONATE CONSISTING OF THE MINERALS CALCITE, DOLOMITE AND NAGNESITE WHICH MAY COMPRISE A CONTINUOUS GRADATION FROM CALCIUM CARBONATE THROUGH CALCIUM MAGNESIUM CARBONATE TO MAGNESIUM CARBONATE. IT HAS UNEXPECTEDLY BEED FOUND THAT THE ADDITION OF SUCH CARBONATE MATERIALS GREATLY ENHANCES THE WORKABILITY OF THE LATEX-MODIFIED PORTLAND CEMENT MORTAR COMPOSITIONS WITHOUT ADVERSELY AFFECTING THE STRENGTH CHARACTERISTICS OF SUCH COMPOSITIONS.
Inventors
- 👤 J Isenburg
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |