Opacified paper sheet and method for production thereof

Details Opacified paper sheet and method for production thereof Opacified paper sheet and method for production thereof

1976-08-24

1977-11-15

Corbin, Arthur L.

Paper making and fiber liberation

Processes and products

Non-fiber additive

106288Q, 106308M, 162166, 162167, 252316, 260 25R, 260 25F, 260 294R, 428306, 428327, 428402, 428530, D21D 300, D21H 352, D21H 356

Patent

active

040584348

ABSTRACT:
Opacifying agents, which may be coated onto or incorporated into paper sheets, consisting essentially of spherical aldehyde condensation polymeric super-particles, each having a spherical, discontinuous shell surrounding a spherical hollow core, said shell composed of agglomerated, discrete spherical aldehyde condensation polymeric secondary particles which are solid throughout. The opacifying agents are incorporated into paper sheets by admixing cellulosic fibers with the super-particles.

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