Vinyl grafted lignite fluid loss additives

Details Vinyl grafted lignite fluid loss additives Vinyl grafted lignite fluid loss additives

1990-02-05

1991-07-02

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106727, 106805, 106823, C04B 2434

Patent

active

050282719

ABSTRACT:
A vinyl grafted lignite fluid loss additive comprising a lignite grafted with at least one vinyl monomer selected from the group consisting of: dimethylaminopropyl methacrylamide, methacrylamido propyltrimethyl ammonium chloride, N-vinylformamide, N-vinylacetamide, diallyl dimethyl ammonium chloride, diallylacetamide, and diallylamine. The vinyl monomer may also be blended with at least one co-monomer. Preferred co-monomers are: 2-acrylamido-2-methylpropanesulfonic acid, dimethylacrylamide, acrylamide, vinylpyrrolidone, vinylacetate, acrylonitrile, dimethylaminoethyl methacrylate, styrenesulfonate, vinylsulfonate, dimethylaminoethyl methacrylate methyl chloride quaternary, acrylic acid and its salts.

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patent: 4703801 (1987-11-01), Fry et al.
patent: 4814014 (1989-03-01), Arfaei
patent: 4938803 (1990-07-01), Huddleston et al.
patent: 4946506 (1990-08-01), Arfaei et al.
patent: 4960465 (1990-10-01), Arfaei

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