초록 ▼

This invention relates to the manufacture and application of uniquely suitable emulsifiers for anionic bituminous emulsions. In particular, this invention relates to emulsifiers for slow-setting aqueous emulsions suitable for use in applications where a high degree of chemical, mechanical, and rheol

This invention relates to the manufacture and application of uniquely suitable emulsifiers for anionic bituminous emulsions. In particular, this invention relates to emulsifiers for slow-setting aqueous emulsions suitable for use in applications where a high degree of chemical, mechanical, and rheological stability is required (such as in slurry seal applications and thixotropic industrial emulsion applications). In such applications, fine aggregate, clay, or polymer latex is mixed with the emulsion to obtain a homogenous storage-stable composite which can be applied for coatings, floorings, roofings, and as a roadway sealant.

대표청구항 ▼

A slow-set aqueous bituminous emulsion comprising bitumen, water, and from about 3.5% to about 10.0%, based on the weight of the emulsion, of an alkaline solution of an anionic emulsifier, wherein said anionic emulsifier is the reaction product of: (A) 2.5% to 10.0% by weight of a base, and (B) 90.0

A slow-set aqueous bituminous emulsion comprising bitumen, water, and from about 3.5% to about 10.0%, based on the weight of the emulsion, of an alkaline solution of an anionic emulsifier, wherein said anionic emulsifier is the reaction product of: (A) 2.5% to 10.0% by weight of a base, and (B) 90.0% to 97.5% by weight of polycarboxylic acid or anhydride reaction product of (1) a blend of from 10.0% to 60.0% by weight of a member selected from the group consisting of unsaturated fatty acids, rosin-derived resin acids, and mixtures thereof, blended in a solvent with from 25.0% to 45.0% by weight of kraft lignin, and (2) 15.0% to 45.0% by weight of maleic anhydride. An industrial emulsion formulation comprising the slow-set aqueous bituminous emulsion of claim 1 mixed with a member selected from the group consisting of: clay, natural rubber latices, styrene-butadiene rubber latices, and combinations thereof.