Method for preserving porous inorganic substrates

Details Method for preserving porous inorganic substrates Method for preserving porous inorganic substrates

1975-09-19

1977-09-20

Hoffman, James R.

Stock material or miscellaneous articles

Composite

Of epoxy ether

427136, 427160, 427245, 428522, B05D 724, B32B 1312, B32B 300

Patent

active

040498697

ABSTRACT:
A method for protecting porous inorganic substrates from damage by salt water, gaseous pollutants, graffiti, and erosion consists of applying to the porous inorganic substrate a gas and vapor permeable preservative composition consisting of an aqueous solution or dispersion of a carboxylated hydrophilic acrylic polymer, a cross-linking agent for the carboxylated hydrophilic acrylic polymer, and an effective amount of an ultraviolet-absorbing agent.

REFERENCES:
patent: 3196122 (1965-07-01), Evans
patent: 3795533 (1974-03-01), Lal Gauri
patent: 3850661 (1974-11-01), Dreher et al.
patent: 3900622 (1975-08-01), Caramanian

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