ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,551, issued on March 3, was assigned to NOK Corp. (Tokyo).
"Chloroprene rubber composition" was invented by Shiro Hirose (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A chloroprene rubber composition comprising 0.8 to 4 parts by weight of 2,4,6-trimercapto-s-triazine and 0.5 to 4.5 parts by weight of tetrabenzylthiuram disulfide based on 100 parts by weight of chloroprene rubber. The chloroprene rubber composition maintains processability (scorch time) and productivity (crosslinking rate) equivalent to those of conventionally used crosslinking systems, without using substances subject to environmental regulations in crosslinking sy...