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1.发明授权Water-retaining and optical-brightner-activating polymer composition, paper coating colors and sheets of coated paper thus obtained 失效保水和光亮剂活化聚合物组合物，由此得到的纸涂层颜色和涂布纸片公开(公告)号：US06297317B1
公开(公告)日：2001-10-02
申请号：US09438045
申请日：1999-11-10
IPC分类号： C08L2904
CPC分类号： D21H19/60 , D21H19/58 , Y10T428/31591 , Y10T428/31895
摘要： A stable aqueous liquid polymer composition, which comprises: (i) at least one polyvinyl alcohol (PVA) which has an Ostwald viscosity less than 5 mPa·s corresponding to a degree of polymerization less than 600 and a molar percentage of hydrolysis ranging from 70 to 100 measured from the ester value (DIN 53401), corresponding to a molar percentage of vinyl acetate units from 30 to 0, and (ii) at least one water-soluble polymer at neutral or alkaline pH, the composition controlling the activation of optical brighteners, water retention and viscosities of paper coating colors.
摘要翻译： 一种稳定的水性液体聚合物组合物，其包含：（i）至少一种聚乙烯醇（PVA），其具有小于5mPa.s的Ostwald粘度，其对应于小于600的聚合度，水解的摩尔百分比为70 至100，根据酯值（DIN 53401）测量，对应于乙酸乙烯酯单元的摩尔百分数为30至0，和（ii）至少一种中性或碱性pH下的水溶性聚合物，控制光学活化的组成 增白剂，保水性和纸涂层颜色的粘度。
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2.发明授权Water-retaining and optical-brightener-activating polymer composition, paper coating colors and sheets of coated paper thus obtained 失效保水和光学增亮剂活化聚合物组合物，由此获得的纸涂层颜色和涂布纸片公开(公告)号：US06521701B2
公开(公告)日：2003-02-18
申请号：US09900050
申请日：2001-07-09
IPC分类号： C08L2904
CPC分类号： D21H19/60 , D21H19/58 , Y10T428/31591 , Y10T428/31895
摘要： A stable aqueous liquid polymer composition, which comprises: (i) at least one polyvinyl alcohol (PVA) which has an Ostwald viscosity less than 5 mPa·s corresponding to a degree of polymerization less than 600 and a molar percentage of hydrolysis ranging from 70 to 100 measured from the ester value (DIN 53401), corresponding to a molar percentage of vinyl acetate units from 30 to 0, and (ii) at least one water-soluble polymer at neutral or alkaline pH, the composition controlling the activation of optical brighteners, water retention and viscosities of paper coating colors.
摘要翻译： 一种稳定的水性液体聚合物组合物，其包含：（i）至少一种聚乙烯醇（PVA），其具有小于5mPa.s的Ostwald粘度，其对应于小于600的聚合度，水解的摩尔百分比为70 至100，根据酯值（DIN 53401）测量，对应于乙酸乙烯酯单元的摩尔百分数为30至0，和（ii）至少一种中性或碱性pH下的水溶性聚合物，控制光学活化的组成 增白剂，保水性和纸涂层颜色的粘度。
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