发明授权
US5109090A Compatibility agent for aqueous polypigmentary suspensions containing hydrated calcium sulfate 失效
含有水合硫酸钙的水性聚氨酯悬浮剂的兼容剂

Compatibility agent for aqueous polypigmentary suspensions containing
hydrated calcium sulfate
摘要:
Copolymers having the general formula: ##STR1## are useful as compatibility, dispersion and grinding agents for aqueous pigmentary suspensions formulated from a mixture of mineral pigments, at least one of which is hydrated calcium sulfate. These suspensions are useful in papermaking.
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