发明授权
- 专利标题: Felt conditioner for deinked recycled newsprint papermaking system
- 专利标题(中): 脱墨再生新闻纸造纸系统的毡制调理剂
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申请号: US404771申请日: 1995-03-15
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公开(公告)号: US5575893A公开(公告)日: 1996-11-19
- 发明人: Abdul Q. Khan , Kevin D. Curham , Jeffrey R. Cowart
- 申请人: Abdul Q. Khan , Kevin D. Curham , Jeffrey R. Cowart
- 申请人地址: PA Trevose
- 专利权人: BetzDearborn Inc.
- 当前专利权人: BetzDearborn Inc.
- 当前专利权人地址: PA Trevose
- 主分类号: D21H11/14
- IPC分类号: D21H11/14 ; D21H21/02 ; D21H21/24 ; D21H23/50 ; D21F1/32
摘要:
A method for conditioning the felts in a papermaking process utilizing deinked secondary fiber in the furnish by adding a felt conditioner consisting of from 5-33% of a nonionic surfactant, from 5-33% of a dispersant, or blends thereof, with the remainder water; wherein the nonionic surfactant is selected from the group consisting of ethoxylated nonylphenols having moles of ethoxylation of from 7.5 to 30 and an HLB of about 12 to 17.2 and di-alkyl phenol ethoxylates having moles of ethoxylation of from 15 to 24 and an HLB of about 13 to 15.1; and wherein the dispersant is selected from the group consisting of the sodium salt of naphthalene sulfonate formaldehyde-condensate having an average molecular weight of from about 700 to 3500, the potassium salt of polymerized alkyl naphthalene sulfonic acid having an average molecular weight of approximately 1000, or the sodium or ammonium salt of lignosulfonate. Additionally, from 1 to 5% of an alkylether hydroxypropyl sultaine enhances performance.
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