Polyvinyl pyrrolidone pressure sensitive adhestive and tape containing same

Claim 1

A SPLICING TAPE COMPRISING A TISSUE PAPER IMPREGNATED AND COATED ON BOTH FACES WITH A WATER-SOLUBLE, NORMALLY TACKY AND PRESSURE-SENSITIVE ADHESIVE COMPRISING: A POLYVINYL PYRROLIDONE ELASTOMER, A POLYFUNCTIONAL MONOMERIC CROSS-LINKING AGENT HAVING AT LEAST TWO FUNCTIONAL GROUP SELECTED FROM THE GROUP CONSISTING OF VINYL, ALLYL, ACRYLIC AND METHACRYLIC GROUPS, SAID CROSS-LINKING AGENT BEING IN AN AMOUNT FROM ABOUT 5 TO 50 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF POLYVINYL PYRROLIDONE ELASTOMER, A PLASTICIZER COMPATIBLE WITH THE POLYVINYL PYRROLIDONE ELASTOMER SELECTED FROM THE GROUP CONSISTING OF POLYOLS AND POLYALKYL GLYCOL ETHERS, SAID PLASTICIZER BEING IN AN AMOUNT FROM ABOUT 15 TO ABOUT 100 PARTS BY WEIGHT PER 100 PARTS OF POLYVINYL PYRROLIDONE ELASTOMER, AND AN ACTIVATOR CATALYST OF THE TYPE CAPABLE OF INDUCING VINYL: TYPE POLYMERIZATION IN AM AMOUNT FROM ABOUT 0.5 TO ABOUT 5 PARTS BY WEIGHT PER 100 PARTS OF POLYVINYL PYRROLIDONE ELASTOMER.