Antistrip latex for aggregate treatment

Details Antistrip latex for aggregate treatment Antistrip latex for aggregate treatment

1998-06-24

2000-07-25

Krynski, William

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

524 8, 524157, 524423, 524436, B32B 1502, B32B 1702, B32B 1900, B32B 2102, B32B 2302

Patent

active

060934948

ABSTRACT:
The subject invention relates to a process for coating aggregate which is particularly useful in making asphalt concrete to provide the aggregate with a high level of resistance to stripping by water, which comprises: (1) mixing the aggregate with latex to form a latex/aggregate mixture, wherein said latex is comprised of water, an emulsifier, a polymer and a water-soluble divalent metal salt; (2) heating the latex/aggregate mixture to a temperature which is within the range of about 66.degree. C. to about 232.degree. C.; (3) maintaining the latex/aggregate mixture at said elevated temperature for a time which is sufficient to reduce the moisture content of the latex/aggregate mixture below about 0.7 weight percent and to allow the polymer in the latex to crosslink on the surface of the aggregate to produce the coated aggregate.

REFERENCES:
patent: 5002987 (1991-03-01), Schulz
patent: 5262240 (1993-11-01), Dunning et al.
patent: 5534568 (1996-07-01), Schulz et al.

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