| abstract |
NEW MATERIAL:A compound expressed by formula I [R is -(CH2CH2 O-)m-(CH2)n-(m is >=0; n is >=1); l is 0 or 1: Y is formula II (R3 is H or methyl) when l is 0 and formula III or IV (X1 to X4 are H or halogen) when l is 1]. EXAMPLE:2,5-Bis(p-ethenylbenzylthio)-1,3,4-thiadiazole. USE:Useful as a monomer capable of providing optical materials, and further coatings, inks, adhesives, vulcanizing agents for rubbers, photosensitive resins, crosslinking agents, etc. PREPARATION:A compound expressed by formula V (M1 is H or alkaline metal) is reacted with a compound expressed by formula VI (X5 is Cl or Br). |