摘要:
An aqueous epoxy resin system AB is described comprising an aqueously dispersed epoxy resin A having, on the average, at least one epoxy group per molecule, and a water-soluble or water-dispersible curing agent B which comprises the reaction product of an amine B1 having at least one primary and/or at least one secondary amino group, an adduct B2 of a polyalkylene ether polyol B21 and an epoxide component B22, and an aromatic compound B3 having at least one acidic group selected from the group consisting of hydroxyl and carboxyl groups, which system can be applied by rolling, spraying or brushing to provide corrosion protection on base metals.
摘要:
This disclosure is related to halonium compounds useful for cyclization of polyenes, alkenoic acids, and alkenyl alkyl ethers, and halogenation of aromatic compounds. The synthesis of such halonium compounds, compounds made using such halonium compounds, and synthesis of natural compounds, including decalins, using the halonium compounds is also disclosed. A representative halonium compound of the disclosure is: Formula (I).
摘要:
An aqueous epoxy resin system ABC comprising an aqueously dispersed epoxy resin A having, on the average, at least one epoxy group per molecule, a water-soluble or water-dispersible curing agent B which comprises the reaction product of an amine B1 having at least one primary and at least one secondary amino group, and an adduct B2 of a polyalkylene ether polyol B21 and an opexide component B22, and aminoplast compound C having a mass fraction of at least 0.1 % of sulphonate or sulphonic acid groups, a coating composition ABCD for thick layer applications comprising the aqueous epoxy resin system ABC and at least one particulate filler D selected from the group consisting of talc, mica, quartz, titanium dioxide, aluminium dioxide, calcium carbonate, and dolomite, and a process for coating mineral or concrete based substrates or floors with such coating compositions.
摘要:
This disclosure is related to halonium compounds useful for cyclization of polyenes, alkenoic acids, and alkenyl alkyl ethers, and halogenation of aromatic compounds. The synthesis of such halonium compounds, compounds made using such halonium compounds, and synthesis of natural compounds, including decalins, using the halonium compounds is also disclosed. A representative halonium compound of the disclosure is: Formula (I).