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Title: Preparation of hydrophilic styrene maleic anhydride copolymer fibers for use in papermaking

Hydrophilic fibers may be prepared by discharging a heated and pressurized dispersion of a styrene-maleic anhydride copolymer into a zone of reduced temperature and pressure, and then modifying the fibers so produced by treatment with an aqueous admixture of selected cationic and anionic water-soluble, nitrogen-containing polymers. Blends of the hydrophilic fibers with wood pulp provide paper products having improved physical properties.
Inventors:
 [1]
  1. (Wilmington, DE)
Issue Date:
OSTI Identifier:
863373
Assignee:
Hercules Incorporated (Wilmington, DE) [*] Notice: portion of term of this patent subsequent to May 15, 1996 has been disclaimed. ORNL
Patent Number(s):
US 4158595
Contract Number:
W-7405-ENG-26
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
Country of Publication:
United States
Language:
English
Subject:
preparation; hydrophilic; styrene; maleic; anhydride; copolymer; fibers; papermaking; prepared; discharging; heated; pressurized; dispersion; styrene-maleic; zone; reduced; temperature; pressure; modifying; produced; treatment; aqueous; admixture; selected; cationic; anionic; water-soluble; nitrogen-containing; polymers; blends; wood; pulp; provide; paper; products; improved; physical; properties; physical properties; reduced temperature; selected cation; wood pulp; improved physical; containing polymer; containing poly; anhydride copolymer; containing polymers; /162/427/428/