Nitrogen-containing polyvinyl alcohol shaped articles

Claim 1

THE METHOD FOR PREPARING SOLID SHAPED POLYVINYL ALCOHOL ARTICLES HAVING IMPROVED DYEABILITY WHICH COMPRISES FORMING A POLYMERIC MATERIAL COMPRISED BY POLYVINYL ALCOHOL AND HAVING CARBONYL-CONTAINING UNITS INCORPORATED THEREIN INTO A SHAPED ARTICLE, SAID POLYMERIC MATERIAL CONSISTING OF AT LEAST 80 MOL PERCENT VINYL ALCOHOL UNITS AND FROM ABOUT 0.1 TO ABOUT 20 MOL PERCENT CARBONYL-CONTAINING UNITS, SAID CARBONYL-CONTAINING UNITS BENG A MEMBER SELECTED FROM THE GROUP CONSISTING OF (A) CARBONYL-CONTAINING UNITS PRODUCED BY PARTIALLY ACETALIZING POLYVINYL ALCOHOL WITH A MEMBER OF THE GROUP CONSISTING OF ALDEHYDES AND KETONES HAVING UP TO 9 CARBON ATOMS THE GROUP CONSISTING OF ALDEHYDE GROUPS, KETONE GROUP; THE GROUP CONSISTING OF ALDEHYDE GROUPS, KETONE GROUP; AND ACETYL GROUPS, WHEREIN AT LEAST ONE OF THE CARBONYL GROUPS IS ONE OF THE FIRST TWO MEMBERS OF THE AFORESAID CARBONYL GROUP, (B) CARBONYL-CONTAINING UNITS PRODUCED BY CO-POLYMERIZNG A VINYL ESTER WITH A MEMBER OF THE GROUP CONSISTING OF VINYL KETONE MONOMERS, VINYL ALDEHYDE MONOMERS AND VINYL ACETAL MONOMERS CONTAINING UP TO 6 CARBON ATOMS, AND HYDROLYZING THE RESULTANT COPOLYMER TO REPLACE THE ESTER GROUPS WITH HYDROXYL GROUPS OF VINYL ALCOHOL, AND (C) CARBONYL-CONTAINING A COMPOUND DUCED BY POLYMERIZING A MEMBER OF THE GROUP CONSISTING OF VINYL ALDEHYDES AND VINYL KETONES CONTAINING UP TO 4 CARBON ATOMS AND THE SODIUM SULFITE ADDITION PRODUCTS OF SAID VINYL ALDEHYDES, AND BLENDING THE RESULTANT POLYMER WITH POLYVINYL ALCOHOL, AND TREATING SAID SHAPED ARTICLE WITH AN AQUEOUS SOLUTION CONTAINING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA, PRIMARY AND SECONDARY AMINES HAVING UP TO 12 CARBON ATOMS, IN THE CHAIN ATTACHED TO THE NITROGEN ATOM AND THE AMINE, AND WATER-SOLUBLE SALTS THEREOF, AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROGEN CYANIDES AT A METAL CYANIDES AND ALKALINE UP TO 12 CARBON ATOMS IN TEMPERATURE OF FROM 0-100*C. THEREBY TO PRODUCE A SHAPED POLYVINYL ALOCHOL ARTICLE HAVING IMPROVED DYEABILITY.

Claim 2

THE METHOD FOR PREPARING SOLID SHAPED POLYVINYL ALCOHOL ARTICLES HAVING IMPROVED DYEABILITY WHICH COMPRISES FORMING A POLYMERIC MATERIAL COMPRISED BY POLYVINYL ALCOHOL AND HAVING CARBONYL-CONTAINING UNITS INCORPORATED THEREIN INTO A SHAPED ARTICLE, SAID POLYMERIC MATERIAL CONSISTING OF AT LEAST 80 MOL PERCENT VINYL ALCOHOL UNITS AND FROM ABOUT 0.1 TO ABOUT 20 MOL PERCENT CARBONYL-CONTAINING UNITS, SAID CARBONYL-CONTAINING UNITS BENG A MEMBER SELECTED FROM THE GROUP CONSISTING OF (A) CARBONYL-CONTAINING UNITS PRODUCED BY PARTIALLY ACETALIZING POLYVINYL ALCOHOL WITH A MEMBER OF THE GROUP CONSISTING OF ALDEHYDES AND KETONES HAVING UP TO 9 CARBON ATOMS THE GROUP CONSISTING OF ALDEHYDE GROUPS, KETONE GROUP; THE GROUP CONSISTING OF ALDEHYDE GROUPS, KETONE GROUP; AND ACETYL GROUPS, WHEREIN AT LEAST ONE OF THE CARBONYL GROUPS IS ONE OF THE FIRST TWO MEMBERS OF THE AFORESAID CARBONYL GROUP, (B) CARBONYL-CONTAINING UNITS PRODUCED BY CO-POLYMERIZNG A VINYL ESTER WITH A MEMBER OF THE GROUP CONSISTING OF VINYL KETONE MONOMERS, VINYL ALDEHYDE MONOMERS AND VINYL ACETAL MONOMERS CONTAINING UP TO 6 CARBON ATOMS, AND HYDROLYZING THE RESULTANT COPOLYMER TO REPLACE THE ESTER GROUPS WITH HYDROXYL GROUPS OF VINYL ALCOHOL, AND (C) CARBONYL-CONTAINING A COMPOUND DUCED BY POLYMERIZING A MEMBER OF THE GROUP CONSISTING OF VINYL ALDEHYDES AND VINYL KETONES CONTAINING UP TO 4 CARBON ATOMS AND THE SODIUM SULFITE ADDITION PRODUCTS OF SAID VINYL ALDEHYDES, AND BLENDING THE RESULTANT POLYMER WITH POLYVINYL ALCOHOL, AND TREATING SAID SHAPED ARTICLE WITH AN AQUEOUS SOLUTION CONTAINING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA, PRIMARY AND SECONDARY AMINES HAVING UP TO 12 CARBON ATOMS, IN THE CHAIN ATTACHED TO THE NITROGEN ATOM AND THE AMINE, AND WATER-SOLUBLE SALTS THEREOF, AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HYDROGEN CYANIDES AT A METAL CYANIDES AND ALKALINE UP TO 12 CARBON ATOMS IN TEMPERATURE OF FROM 0-100*C. THEREBY TO PRODUCE A SHAPED POLYVINYL ALOCHOL ARTICLE HAVING IMPROVED DYEABILITY.