Inder Mani

US Patent:

39683192, Jul 6, 1976

Filed:

Jun 10, 1974

Appl. No.:

5/478125

Inventors:

Inder Mani - Midland MI
Alexander Shand - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

D21H 128
C08F 3308

US Classification:

428511

Abstract:

Paper coatings exhibiting improved pick resistance at lower binder levels are provided by incorporating into a conventional binder a pigment comprising a copolymer of an ethylenically unsaturated hard monomer such as styrene and an ethylenically unsaturated amide such as acrylamide in the form of non-film forming discrete particles having an average particle diameter in the range from about 0. 25 to about 1 micrometer.

US Patent:

40948412, Jun 13, 1978

Filed:

Jun 17, 1974

Appl. No.:

5/479957

Inventors:

Inder Mani - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08F22056

US Classification:

260 296H

Abstract:

Highly monodisperse latexes of non-film forming polymers are prepared by (1) dispersing a hard monomer and an ethylenically unsaturated amide in an aqueous medium containing a surfactant in an amount less than the critical micelle concentration of the surfactant and (2) subjecting the dispersion to emulsion polymerization. Such monodisperse latexes are useful as opacifying pigments in paper coatings, as internal calibration standards in electron microscopy, and as model systems for study of colloidal properties.

US Patent:

47056363, Nov 10, 1987

Filed:

Jul 19, 1985

Appl. No.:

6/756894

Inventors:

Hamish Small - Leland MI
Inder Mani - Midland MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

B01D 1300

US Classification:

210638

Abstract:

This invention relates to an ionic polymer, method for making a coating and a composite membrane therefrom and also relates to products derived from the disclosed methods and polymer. A new lipid-like permselective membrane is disclosed comprising an ultra-thin selective coating deposited on a non-selective but permeable substrate, which may be anionic or cationic, in hollow fiber, tubular or planar form. The method of preparation of the membrane comprises treating the permeable substrate with a solution of the ionic polymer. The polymer is the product of an aromatic monomer, acrylate and vinyl chloride quaternized with a tertiary amine in which at least one of the alkyl groups of the amine contain at least two carbon atoms. The polymer can also be the product of an aromatic monomer and acrylate and the polymer being partially sulfonated. The treatment produces an extremely thin coating that is held tenaciously by electrostatic forces and the hydrophobicity of the polymer determines its permeability.

US Patent:

45393737, Sep 3, 1985

Filed:

Jul 12, 1982

Appl. No.:

6/397625

Inventors:

Inder Mani - Midland MI
Glen L. Gunderman - Clare MI

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08L 3302
C08L 3900
C08L 3304
C08L 4100

US Classification:

525203

Abstract:

Novel thermoplastic polyelectrolyte complexes are disclosed which are the reaction products of (a) a polyanion and (b) a polycation wherein one of the polyanion and polycation contains repeating units derived from a soft monomer. By the selection of said soft monomers and of the cation group present in the polycation, moldable, extrudable polyelectrolyte complexes are obtained.