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Papermaking and products made thereby with ionic crosslinked polymeric microparticle

A polymer, ionic technology, applied in the priority of U.S. Provisional Patent Application 61/408,262, papermaking and papermaking products, in the field of papermaking, can solve problems such as conflicts, and achieve the effect of improving papermaking retention efficiency and dewatering rate

Inactive Publication Date: 2013-09-04
BUCKMAN LAB INT INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these or other papermaking parameters can conflict with each other in unpredictable ways

Method used

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  • Papermaking and products made thereby with ionic crosslinked polymeric microparticle
  • Papermaking and products made thereby with ionic crosslinked polymeric microparticle
  • Papermaking and products made thereby with ionic crosslinked polymeric microparticle

Examples

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Embodiment 1

[0103] Pulp Suspension Filler Retention and Dewatering Test

[0104] In this test, the effect of different microparticles with or without ionically crosslinked acrylic-acrylate copolymer microparticles on suspension fiber retention and dewatering rate of bleached kraft pulp was investigated. Pulp stock (70% hardwood, 30% softwood) (CSF450) was prepared from commercial pulpboard obtained from a commercial paper mill in the United States. The pulp board is a standard craft product. For the pulp, bleached southern pine kraft pulp boards (softwood pulp boards) and bleached southern mixed hardwood pulp boards were used for testing. For refining, softwood and hardwood pulp sheets were individually torn into small pieces and soaked in water overnight. Each pulp was refined in a beater. Apply TAPPI standard method for pulp refining (T200om-89). The pulp was refined to a desired Canadian standard freeness (CSF) of 450. Refined softwood and hardwood pulps were mixed in a ratio of 3...

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Abstract

Enhancement of papermaking drainage and retention properties of aqueous cellulosic suspensions used for production of paper or paper board with a retention / drainage additive system including ionic crosslinked acrylic acid-acrylate copolymer microparticles is described. Paper and paperboard products made with these copolymer microparticles are also described.

Description

Background of the invention [0001] This application is based on 35 U.S.C. §119(e) claiming priority to U.S. Provisional Patent Application 61 / 408,262, filed October 29, 2010, which is hereby incorporated by reference in its entirety. [0002] This invention relates to the manufacture of paper, and more particularly to the manufacture of paper utilizing retention aid systems comprising ionically crosslinked polymer particles and products made therefrom. [0003] During the production of paper and board from a dilute aqueous suspension of cellulosic fibers on a papermaking plant, the suspension may pass through one or more shear stages and the resulting suspension dewatered through a wire to form paper , and then dry it. Various inorganic additives and / or organic polymeric materials are usually included in the suspension in an effort to improve the process or its product. Attempts have been made in the past to make process improvements, for example, in the retention, drainage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/41D21H21/10C08F20/10D21H21/24D21F9/00
CPCC08F20/10D21H17/37D21H21/10D21H21/18D21H21/52
Inventor 班卫平
Owner BUCKMAN LAB INT INC
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