发明授权
US09096974B2 Process for producing modified cellulose pulps, cellulose pulp thus obtained and use of biopolymer for producing cellulose pulps
有权
用于生产改性纤维素纸浆，由此获得的纤维素纸浆和使用生物聚合物生产纤维素纸浆的方法
- 专利标题： Process for producing modified cellulose pulps, cellulose pulp thus obtained and use of biopolymer for producing cellulose pulps
- 专利标题（中）： 用于生产改性纤维素纸浆，由此获得的纤维素纸浆和使用生物聚合物生产纤维素纸浆的方法
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申请号： US13636075申请日： 2011-03-21
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公开(公告)号： US09096974B2公开(公告)日： 2015-08-04
- 发明人: Romolo Ranocchia , Ademilson Massoquete , Danilo Oyakawa
- 申请人： Romolo Ranocchia , Ademilson Massoquete , Danilo Oyakawa
- 申请人地址： BR Aracruz
- 专利权人： Fibria Celulose S/A
- 当前专利权人： Fibria Celulose S/A
- 当前专利权人地址： BR Aracruz
- 代理机构： Alston & Bird LLP
- 优先权： WOPCT/BR2010/000081 20100319
- 国际申请： PCT/BR2011/000071 WO 20110321
- 国际公布： WO2011/113126 WO 20110922
- 主分类号： D21H17/28
- IPC分类号： D21H17/28 ; D21C3/22 ; D21C5/02 ; D21C9/00 ; D21C9/10 ; D21H17/21 ; D21H17/24
摘要：
The present invention relates to an improved process for producing chemical cellulose pulp wherein biopolymers are added immediately before, during or after a bleaching step, depending on pulp characteristics and on process conditions used. The biopolymers according to the present invention are starch by an etherification reaction. This treatment results in a differentiated pulp having improved physical, chemical and mechanical properties when compared with cellulose pulps obtained by traditional processes. The use of said biopolymer alters the relations between important pulp properties rendering their application in papermaking process advantageous. This differentiation increases the possibilities of use and also of new applications, including for the substitution of pulps produced from other cellulose sources. Thus, the present invention also relates to a process for the preparation of paper, such as printing, writing, decorative, special or tissue-type papers, through the use of the cellulose pulps modified by the above process.