Abstract 1. A METHOD FOR THE PREPARATION O THERMOSET SYNTHETIC RESINOUS RESOLE FOAM COMPOSITIONS, THE STEPS OF THE METHOD COMPRISING PROVIDING IN INTIMATE ADMIXTURE (A) A RESOLE RESIN HAVING A VISCOSITY OF FROM 300 TO 100,000 CENTIPOISES AT 25*C. WHEN THE WATER CONTENT OF THE RESIN IS 15 PERCENT BY WEIGHT, (B) A CATALYST FOR THE RESOLE RESIN, THE CATALYST COMPRISING A STRONG INORGANIC OR ORGANIC ACID, (C) A PLURALITY OF SYNTHETIC RESINOUS THERMOPLASTIC EXPANDABLE MICROSPHERES, THE MICROSPHERES COMPRISING A SYNEHETIC RESINOUS THERMOSPLASTIC SHELL OF A POLYMER CONTAINING AT LEAST 50 PERCENT BY WEIGHT VINYLIDENE CHLORIDE AND AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, HAVING ENCAPSULATED THEREIN A VOLATILE LIQUID FOAMING AGENT, CONFINING THE MIXTURE WITHIN A MOLD OF DESIRED CONFIGURATION, AND CURING THE MIXTURE UNTIL THE MIXTURE HAS HARDENED TO A SELF-SUPPORTING MASS CONTAINING A PLURALITY OF CLOSED, GAS-FILLED CELLS HAVING DIAMETERS FROM 10 TO 100 MICRONS.
A METHOD FOR THE PREPARATION O THERMOSET SYNTHETIC RESINOUS RESOLE FOAM COMPOSITIONS, THE STEPS OF THE METHOD COMPRISING PROVIDING IN INTIMATE ADMIXTURE (A) A RESOLE RESIN HAVING A VISCOSITY OF FROM 300 TO 100,000 CENTIPOISES AT 25*C. WHEN THE WATER CONTENT OF THE RESIN IS 15 PERCENT BY WEIGHT, (B) A CATALYST FOR THE RESOLE RESIN, THE CATALYST COMPRISING A STRONG INORGANIC OR ORGANIC ACID, (C) A PLURALITY OF SYNTHETIC RESINOUS THERMOPLASTIC EXPANDABLE MICROSPHERES, THE MICROSPHERES COMPRISING A SYNEHETIC RESINOUS THERMOSPLASTIC SHELL OF A POLYMER CONTAINING AT LEAST 50 PERCENT BY WEIGHT VINYLIDENE CHLORIDE AND AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, HAVING ENCAPSULATED THEREIN A VOLATILE LIQUID FOAMING AGENT, CONFINING THE MIXTURE WITHIN A MOLD OF DESIRED CONFIGURATION, AND CURING THE MIXTURE UNTIL THE MIXTURE HAS HARDENED TO A SELF-SUPPORTING MASS CONTAINING A PLURALITY OF CLOSED, GAS-FILLED CELLS HAVING DIAMETERS FROM 10 TO 100 MICRONS.
Claim 2
Independent Claim
147 words
A METHOD FOR THE PREPARATION O THERMOSET SYNTHETIC RESINOUS RESOLE FOAM COMPOSITIONS, THE STEPS OF THE METHOD COMPRISING PROVIDING IN INTIMATE ADMIXTURE (A) A RESOLE RESIN HAVING A VISCOSITY OF FROM 300 TO 100,000 CENTIPOISES AT 25*C. WHEN THE WATER CONTENT OF THE RESIN IS 15 PERCENT BY WEIGHT, (B) A CATALYST FOR THE RESOLE RESIN, THE CATALYST COMPRISING A STRONG INORGANIC OR ORGANIC ACID, (C) A PLURALITY OF SYNTHETIC RESINOUS THERMOPLASTIC EXPANDABLE MICROSPHERES, THE MICROSPHERES COMPRISING A SYNEHETIC RESINOUS THERMOSPLASTIC SHELL OF A POLYMER CONTAINING AT LEAST 50 PERCENT BY WEIGHT VINYLIDENE CHLORIDE AND AT LEAST ONE ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, HAVING ENCAPSULATED THEREIN A VOLATILE LIQUID FOAMING AGENT, CONFINING THE MIXTURE WITHIN A MOLD OF DESIRED CONFIGURATION, AND CURING THE MIXTURE UNTIL THE MIXTURE HAS HARDENED TO A SELF-SUPPORTING MASS CONTAINING A PLURALITY OF CLOSED, GAS-FILLED CELLS HAVING DIAMETERS FROM 10 TO 100 MICRONS.