Temporary wet strength resins

Details Temporary wet strength resins Temporary wet strength resins

1996-07-11

1998-03-03

Yoon, Tae

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621682, 525154, 5253282, 5253294, D21H 1745, C08F 828

Patent

active

057230226

ABSTRACT:
Compositions comprising a blend of (1) an ionic, water-soluble, vinylamide polymer containing sufficient vinylamide and --CHOHCHO substituents to be thermosetting and a ratio of glyoxal substituents to glyoxal-reactive substituents in excess of about 0.02:1.0 and (2) a glyoxalated, cationic, water-soluble vinylamide polymer having a molecular weight of about 500 to about 6000, sufficient glyoxal-reactive and glyoxal substituents to be thermosetting and a ratio of glyoxal substituents to vinylamide substituents being in an excess of about 0.1:1.0, are disclosed.

REFERENCES:
patent: 3556932 (1971-01-01), Coscia et al.
patent: 4605702 (1986-08-01), Guerro et al.
patent: 5316623 (1994-05-01), Espy
patent: 5318669 (1994-06-01), Dasgupta
patent: 5320711 (1994-06-01), Dauplaise et al.
patent: 5427652 (1995-06-01), Darlington et al.
patent: 5470918 (1995-11-01), Tsutumi et al.

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