发明名称 |
Water-retaining and optical-brightener-activating polymer composition, paper coating colors and sheets of coated paper thus obtained |
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.
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申请公布号 |
US2002004550(A1) |
申请公布日期 |
2002.01.10 |
申请号 |
US20010900050 |
申请日期 |
2001.07.09 |
申请人 |
COATEX S.A. |
发明人 |
EGRAZ JEAN-BERNARD;RAVET GEORGES;SUAU JEAN-MARC;CAPRA-OGIER ISABELLE;GRONDIN HENRI |
分类号 |
C08L29/04;C08L101/14;C09D129/04;D21H19/58;D21H19/60;D21H21/28;D21H21/30;(IPC1-7):C08J3/00;C08K3/26;C08K3/34;C08L1/00 |
主分类号 |
C08L29/04 |
代理机构 |
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代理人 |
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地址 |
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