Coating for concrete structures

Details Coating for concrete structures Coating for concrete structures

1998-08-21

1999-10-05

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C08L 3300

Patent

active

059625791

ABSTRACT:
The subject invention relates to a latex blend which is particularly beneficial when utilized in manufacturing coatings for concrete structures, said latex being comprised of a blend of (1) from about 60 weight percent to about 95 weight percent of a first latex which is comprised of (a) water, (b) a polymer that is comprised of repeat units which are derived from about 30 to about 70 weight percent vinyl aromatic monomers, from about 25 to about 65 weight percent of at least one alkyl acrylate monomer, from about 1 to about 5 weight percent of acrylic acid and from about 0.4 to about 3 weight percent methacrylic acid, (c) about 0.2 phr to 0.4 phr of at least one sulfonate surfactant and (d) about 4 phr to 8 phr of at least one water-insoluble nonionic surface active agent having a hydrophilic-lipophile balance number which is within the range of about 12 to about 20 and (2) from about 5 weight percent to about 40 weight percent of a second latex which is comprised of (a) water, (b) a polymer that is comprised of repeat units which are derived from about 70 weight percent to about 100 weight percent diene monomers and from 0 weight percent to about 30 weight percent vinyl aromatic monomers and (c) an emulsifier.

REFERENCES:
patent: 3843584 (1974-10-01), Turck
patent: 3996181 (1976-12-01), Hayashi
patent: 4230810 (1980-10-01), Lattime
patent: 4358403 (1982-11-01), Distler
patent: 5306793 (1994-04-01), Parker

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