Quebracho/surfactant compositions as universal bitumen/water emu

Compositions: coating or plastic – Coating or plastic compositions – Carbohydrate or derivative containing

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

106277, L09Q19500

Patent

active

054074762

ABSTRACT:
Emulsifier compositions comprising a mixture of quebracho, a surfactant, water, and a pH adjusting reagent for dry and aqueous anionic emulsifiers for producing universal bitumen-in-water emulsions. These emulsifiers are particularly useful in producing stable, anionic asphalt-in-water emulsions that are universal, i.e., they can be used as is or with a wide variety of fillers, additives, pigments and the like, including fine particulate materials, without premature breaking. In the preferred emulsifier, crude, spray-dried quebracho is mixed with an alpha olefin sulfonate containing 10 to 20 carbon atoms, and the pH is preferably adjusted to pH 10 producing an anionic emulsifying agent. The pH may be adjusted from pH 4.5 to pH 11.5. Asphaltic emulsions made with the quebracho emulsifier exhibit enhanced stability, increased viscosity, high ionic headroom and decreased drying times. The residual asphalt coat modified with quebracho exhibits increased adhesion, cohesion, hardness, viscosity and ductility and increased softening temperature as compared to base asphalt in water emulsions not having quebracho in the emulsifier. The emulsifier composition of this invention can be prepared in dry, powdered form or in aqueous solution form. Direct addition of quebracho to asphalt prior to emulsification is taught.

REFERENCES:
patent: 3615780 (1971-10-01), Kim et al.
patent: 4391645 (1983-07-01), Marcellis et al.
patent: 4502969 (1985-03-01), Shell

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Quebracho/surfactant compositions as universal bitumen/water emu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Quebracho/surfactant compositions as universal bitumen/water emu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quebracho/surfactant compositions as universal bitumen/water emu will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-64334

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.