Polychloroprene latex, rubber composition and dip-molded article
US9394454B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2012 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Feb 16, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2311/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Provided is a polychloroprene latex that shows favorable low-temperature stability without deterioration in the rubber agglutinating property during production of the dip-molded article, a rubber composition, and a dip-molded article, prepared by using the same.Prepared is a polychloroprene latex of a chloroprene copolymer obtained by polymerization of raw monomers at least containing chloroprene and 2,3-dichloro-1,3-butadiene, which is dispersed in water, wherein the 2,3-dichloro-1,3-butadiene content in the raw monomers is controlled to 1 to 30 mass % and the potassium ion content is adjusted to 0.7 to 1.5 parts by mass and the sodium ion content to 0.2 part or less by mass with respect to 100 parts by mass of the solid matter. In addition, a metal oxide: 1 to 10 parts by mass, sulfur: 0.1 to 3 parts by mass, an aging inhibitor: 0.1 to 5 parts by mass and a surfactant: 0.1 to 10 parts by mass, respectively with respect to 100 parts by mass of the solid matter, were added to the chloroprene latex, to give a rubber composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.