Abstract:
THE INVENTION RELATES TO A LAMINATED STRUCTURE COMPRISING A SUBSTRATE HAVING ON AT LEAST ONE OF ITS TWO MAJOR SURFACES AT LEAST ONE ABSORBENT INSULATING LAMINA WHICH HAS BEEN IMPREGNATED AND INTEGRALLY BONDED TO SAID SURFACE WITH A SYNTHETIC RESIN HAVING INCORPORATED THEREIN A STANNOUS COMPOUND.
Abstract:
Novel organo(block-amide-siloxane)-(block-amide-imide) polymers are prepared by a novel process comprising contacting an organodicarboxyterminated imide with an organodicarboxyterminated polysiloxane in the presence of an organodiisocyanate coupling agent. The resulting polymers are high molecular weight polymers having essentially linear recurring units comprising short chain amide-imide polymer blocks having the general formulas:
OR,
AND A LONG CHAIN AMIDE-SILOXANE POLYMER BLOCKS HAVING THE FORMULA:
WHEREIN BOTH A AND B ARE POSITIVE NUMBERS, THE RATIO OF A/A+ B IS WITHIN THE RANGE OF FROM ABOUT 0.01 TO ABOUT 0.99, C IS A POSITIVE NUMBER WITHIN THE RANGE OF FROM ABOUT 0 TO ABOUT 500, AND X IS A POSITIVE NUMBER WITHIN THE RANGE OF FROM ABOUT 4 TO ABOUT 10,000. The novel polymers are readily dissolved in suitable solvents for the application of a protective polymer coating on wire and cable substrates, or for the application of polymer films which have improved adhesion to glass.