Polychloroprene latex, rubber-asphalt composition and utilization method thereof, sheet, and waterproof coating film
US9321937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2011 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Jul 11, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/80
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided are a polychloroprene latex giving a rubber-asphalt composition superior in low-temperature stability and film-forming property on the material to be coated, a rubber-asphalt composition and a utilization method thereof, a sheet, and a waterproof coating film. The rubber-asphalt composition includes a major agent containing 10 to 40 mass % of the anionic polychloroprene latex comprising potassium ions in an amount of 0.7 to 1.5 parts by mass and sodium ions in an amount of controlled to be 0.2 part by mass or less with respect to 100 parts by mass of the solid matter and 60 to 90 mass % of an anionic asphalt emulsion; and a coagulating agent of an aqueous solution containing a polyvalent metal salt as the principal component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.