Heterocyclic-containing Reactant Other Than Cyclic Acid Anhydride As Sole Hetero Ring Patents (Class 528/341)
  • Imidazole type curing agents and latent systems containing them
    Patent number: 4101514
    Abstract: The disclosed curing agents or initiators have the formula ML.sub.n (O-SO.sub.2 -R.sub.f).sub.m wherein L is an imidazole, M is a metal, n is a coordination number of M, R.sub.f is a fluorinated alkyl group, and m is the valence of M. These curing agents are useful in latent curable epoxy systems. Upon heating to the cure temperature (e.g. 100.degree. - 250.degree. C.), such systems cure efficiently and with a low exotherm.
    Type: Grant
    Filed: September 15, 1976
    Date of Patent: July 18, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Karl Friedrich Thom
  • Process for the production of amine silicate compounds and their resinous condensation products
    Patent number: 4100112
    Abstract: Amine silicate compounds are formed by the chemical reaction of hydrated silica with an amine compound in the presence of a suitable alkali catalyst at a suitably elevated temperature, and then by reacting the resultant compounds with aldehydes, epoxys, organic dicarboxylic anhydrides, polycarboxylic acid compounds or carbon disulfide, thereby forming a resinous condensation product.
    Type: Grant
    Filed: May 19, 1977
    Date of Patent: July 11, 1978
    Inventor: David H. Blount