Organosilicon molding compositions containing orthotitanate catalysts

Claim 1

A METHOD FOR THE MANUFACTURE OF AN ORGANOSILOXANE LAMINATE WHICH COMPRISES (1) IMPREGNATING A FIBROUS SHEET MATERIAL WITH A HOMOGENEOUS SOLUTION PRODUCED BY MIXING (A) A SILANE OF THE FORMULA RNSI(OR'')4-N IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF PHENYL AND MONOVALENT ALIPHATIC HYDROCARBON RADICALS WITH LESS THAN 4 CARBON ATOMS AND R'' IS AN ALKYL GROUP OF LESS THAN 4 CARBON ATOMS WITH N HAVING AN AVERAGE VALUE OF FROM .9 TO 1.9, (B) FORM .5 TO 1 MOL OF H2O PER MOL OF (OR'') GROUPS ON THE SILANE, AND (C) A HYDROLYSIS CATALYST SELECTED FROM THE GROUP CONSISTING OF ORTHOTITANATES HAVING THE GENERAL FORMULA TI(OR")4 AND PARTIAL CONDENSATES THEREOF, IN WHICH R" IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HYDROCARBON GROUPS CONTAINING 1 TO 30 CARBON ATOMS AND APPROPRIATELY SUBSTITUTED HYDROCARBONS IN WHICH ANY ATOMS OTHER THAN CARBON AND HYDROGEN ARE SELECTED FROM THE GROUP CONSISTING OF NITROGEN AND OXYGEN ATOMS, SAID CATALYST BEING PRESENT IN AN AMOUNT FROM .001 TO .012 MOL OF TI PER MOL OF SI, SO THAT THERE IS A RESIN PICK-UP BY THE MATERIAL OF AT LEAST 1.5 PERCENT BY WEIGHT OF ORGANOSILOXANE SOLIDS BASED ON THE WEIGHT OF THE MATERIAL, (2) PRE-CURING THE IMPREGNATED SHEET OF MATERIAL TO AN EXTENT SUCH THAT IT IS SUFFICIENTLY THERMOPLASTIC TO BE LAMINATED WITH OTHER SHEETS OF IMPREGNATED MATERIAL, (3) ASSEMBLING MULTIPLE PLIES OF THE SHEETS OF MATERIAL SO IMPREGNATED AND PRE-CURED TO FORM A LAMINATE, (4) SUBJECTING THE ASSEMBLY TO SUFFICIENT HEAT AND PRESSURE TO BOND AND CONSOLIDATE THE PLIES, AND (5) AFTER-CURING THE RESULTING LAMINATE AT GRADUALLY INCREASING TEMPERATURES.

Claim 2

A METHOD FOR THE MANUFACTURE OF AN ORGANOSILOXANE LAMINATE WHICH COMPRISES (1) IMPREGNATING A FIBROUS SHEET MATERIAL WITH A HOMOGENEOUS SOLUTION PRODUCED BY MIXING (A) A SILANE OF THE FORMULA RNSI(OR'')4-N IN WHICH R IS SELECTED FROM THE GROUP CONSISTING OF PHENYL AND MONOVALENT ALIPHATIC HYDROCARBON RADICALS WITH LESS THAN 4 CARBON ATOMS AND R'' IS AN ALKYL GROUP OF LESS THAN 4 CARBON ATOMS WITH N HAVING AN AVERAGE VALUE OF FROM .9 TO 1.9, (B) FORM .5 TO 1 MOL OF H2O PER MOL OF (OR'') GROUPS ON THE SILANE, AND (C) A HYDROLYSIS CATALYST SELECTED FROM THE GROUP CONSISTING OF ORTHOTITANATES HAVING THE GENERAL FORMULA TI(OR")4 AND PARTIAL CONDENSATES THEREOF, IN WHICH R" IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HYDROCARBON GROUPS CONTAINING 1 TO 30 CARBON ATOMS AND APPROPRIATELY SUBSTITUTED HYDROCARBONS IN WHICH ANY ATOMS OTHER THAN CARBON AND HYDROGEN ARE SELECTED FROM THE GROUP CONSISTING OF NITROGEN AND OXYGEN ATOMS, SAID CATALYST BEING PRESENT IN AN AMOUNT FROM .001 TO .012 MOL OF TI PER MOL OF SI, SO THAT THERE IS A RESIN PICK-UP BY THE MATERIAL OF AT LEAST 1.5 PERCENT BY WEIGHT OF ORGANOSILOXANE SOLIDS BASED ON THE WEIGHT OF THE MATERIAL, (2) PRE-CURING THE IMPREGNATED SHEET OF MATERIAL TO AN EXTENT SUCH THAT IT IS SUFFICIENTLY THERMOPLASTIC TO BE LAMINATED WITH OTHER SHEETS OF IMPREGNATED MATERIAL, (3) ASSEMBLING MULTIPLE PLIES OF THE SHEETS OF MATERIAL SO IMPREGNATED AND PRE-CURED TO FORM A LAMINATE, (4) SUBJECTING THE ASSEMBLY TO SUFFICIENT HEAT AND PRESSURE TO BOND AND CONSOLIDATE THE PLIES, AND (5) AFTER-CURING THE RESULTING LAMINATE AT GRADUALLY INCREASING TEMPERATURES.