Silicone rubber adhesive containing

Claim 1

AN ADHERED ASSEMBLY COMPOSED OF TWO SOLID SURFACES BONDED TO EACH OTHER BY MEANS OF A CURED ADHESIVE COMPOSITION COMPRISING (1) THE PRODUCT OF REACTION UNDER HEAT OF A MIXTURE OF INGREDIENTS COMPOSED OF (A) AN ALKALI-METAL SALT OF A CONVERTIBLE ORGANOPOLYSILOXANE WHEREIN THE ALKALI METAL IS SELECTED FROM THE CLASS CONSISTING OF POTASSIUM, CESIUM, AND RUBIDIUM, THE SAID ALKALIMETAL SALT HAVING BEEN OBTAINED BY HEATING MIXTURE COMPRISING, BY WEIGHT, FROM 0.075 TO 3 PARTS OF AN ALKALIMETAL HYDROXIDE AND ONE PART OF A CONVERTIBLE ORGANOPOLYSILOXANE, AND (B) AN ADDITIONAL AMOUNT OF A CONVERTIBLE ORGANOPOLYSILOXANE, THERE BEING EMPLOYED, ON A WEIGHT BASIS, FROM 0.2 TO 8 PARTS OF (A) PER 100 PARTS OF (B), (2) A TRIALKYLCHLOROSILANE-TREATED SILICA AEROGEL, AND (3) A CURING AGENT FOR (1), THE AFORESAID ORGANOPOLYSILOXANES OF (A) AND (B) BOTH BEING CONVERTIBLE TO THE CURED, SOLID, ELASTIC STATE AND CONTAINING AN AVERAGE OF FROM 1.98 TO 2.01 ORGANIC GROUPS PER SILICON ATOM ATTACHED TO SILICON BY CARBON-SILICON LINKAGES WHEREIN THE ORGANIC GROUPS ARE SELECTED FROM THE CLASS CONSISTING OF ALKYL, ARYL, ARALKYL, ALKARYL, CYCLOALKYL AND ALKENYL RADICALS.