Stain resistant polyester coated block

Details Stain resistant polyester coated block Stain resistant polyester coated block

E - Fixed Constructions

04

C

25/101, 72/49, 4

E04C 1/40 (2006.01) B32B 13/12 (2006.01) E04B 2/02 (2006.01)

Patent

CA 1107881

ABSTRACT OF THE DISCLOSURE Masonry blocks are provided with a cured resin- ous coating of an ethylenically-unsaturated polyester. The polyhydric alcohol in the ester is primarily neopen- tyl glycol to provide water resistance. The acid in the ester is isophthalic acid with 10 to 33% maleic anhydride, based on the total weight of the polyester. If the upper limit on the maleic anhydride is exceeded, stain resis- tance is lost. Triethyl phosphate is preferably incorpor- ated to provide fire resistance while eliminating flame and smoke problems when employing methyl methacrylate as a polymerizable solvent. The sand-polyester compositions of the invention can also be formed as cast articles with- out a masonry unit backing.

272241

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