Fluid loss additive for cement slurries containing a n-vinyl-2-pyrrolidone- omega -2-acrylamido-2-methylpropane sulfonate- omega -acrylic acid- omega -acrylamide polymer,申请号US19890462315-传众专利搜索

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发明名称	Fluid loss additive for cement slurries containing a n-vinyl-2-pyrrolidone- omega -2-acrylamido-2-methylpropane sulfonate- omega -acrylic acid- omega -acrylamide polymer
摘要
申请公布号	US5109042(A)	申请公布日期	1992.04.28
申请号	US19890462315	申请日期	1989.12.22
申请人	PHILLIPS PETROLEUM COMPANY	发明人	STEPHENS, MICHAEL
分类号	C04B24/16;C04B28/02;C09K8/46	主分类号	C04B24/16
代理机构		代理人
主权项
地址

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