초록 ▼

Slurries are formed with cationic emulsions prepared by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of polyamine with certain polycarboxylic acids, which product is subsequently modified by reaction with from 10-30% of a memb

Slurries are formed with cationic emulsions prepared by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the reaction of polyamine with certain polycarboxylic acids, which product is subsequently modified by reaction with from 10-30% of a member of the group consisting of acetic anhydride, phthalic anhydride, propylene carbonate, and styrene oxide.

대표청구항 ▼

In a cationic aqueous bituminous emulsion-aggregate slurry formed with cationic emulsions prepared by emulsifying bitumen in water with a cation-active emulsifier which is an amine condensate product of the reaction at a temperature of from about 30°C. to about 250°C., of about 2 moles of a polyalky

In a cationic aqueous bituminous emulsion-aggregate slurry formed with cationic emulsions prepared by emulsifying bitumen in water with a cation-active emulsifier which is an amine condensate product of the reaction at a temperature of from about 30°C. to about 250°C., of about 2 moles of a polyalkylene amine with about 1 mole of a member selected from the group consisting of polycarboxylic acids and anhydrides of the following general formulae [Figure] or [Figure] [Figure] [Figure] [Figure] and [Figure] wherein x and y are integers from 3 to 9, x and y together equal 10-14, at least one Z is a carboxylic acid group and any remaining Z is hydrogen, the improvement comprising cooling the amine condensate to about 150°C. and further reacting the amine condensate at a temperature of about 220°C. to about 250°C. with a member of the group consisting of an acetic anhydride, an aromatic mono- and dicarboxylic acid, and its corresponding anhydride.