Rohm & Haas Electronic Materials LLC

Angus Chemical Company

Dow Global Technolgoies LLC

Glenn Nelson Robinson

Ian A Tomlinson

Asghar Akber Peera

Kim Sang Ho

Mark Robert Winkle

David Fleming

Xiang-Qian Liu

Michael K Gallagher

Avin V Dhoble

Mike K Gallagher

Gregory E McWright

Charles E Seeney

Ian Anthony Tomlinson

Asghar A Peera

A method for preparing a compound having formula (II)  wherein Rand Rindependently are methyl or ethyl, or Rand Rcombine to form a Cor Ccycloalkyl or cycloalkenyl group. The method includes a step of combining RRCHNO, glutaraldehyde and an amine. The compound is useful in coating compositions and other applications for pH adjustment.

Method for preparing polyamine compounds

A flux composition is provided, comprising, as initial components: a carboxylic acid; and, an amine fluxing agent represented by formula I:  Also provided is a method of soldering an electrical contact using the flux composition.

Amine, carboxylic acid flux composition and method of soldering

A curable flux composition is provided, comprising, as initial components: a resin component having at least two oxirane groups per molecule; a carboxylic acid; and, an amine fluxing agent represented by formula I: and, optionally, a curing agent. Also provided is a method of soldering an electrical contact using the curable flux composition.

Curable amine, carboxylic acid flux composition and method of soldering

A compound having formula (I) wherein Ris methyl or ethyl; Ris hydrogen, methyl, CHC(NH)(R)(CHOH) or Rgroups combine to form a difunctional C-Calkyl group; and X is a difunctional group selected from the group consisting of C-Calkyl, C-Ccycloalkyl, C-Caryl, C-Caryl alkyl, C-Cheteroalkyl or C-Caryl heteroalkyl.

Low-voc polyamines

An amine flux composition is provided, comprising, as an initial component: an amine fluxing agent represented by formula I: wherein R, R, Rand Rare independently selected from a hydrogen, a substituted Calkyl group, an unsubstituted Calkyl group, a substituted Carylalkyl group and an unsubstituted Carylalkyl group; wherein Rand Rare independently selected from a Calkyl group, a substituted Calkyl group, a Caryl group and a substituted Caryl group or wherein Rand R, together with the carbon to which they are attached, form a Ccycloalkyl ring optionally substituted with a Calkyl group; wherein Rand Rare independently selected from a Calkyl group, a substituted Calkyl group, a Caryl group and a substituted Caryl group or wherein Rand R, together with the carbon to which they are attached, form a Ccycloalkyl ring optionally substituted with a Calkyl group; and, wherein Ris selected from a hydrogen, a Calkyl group, a substituted Calkyl group, a Caryl group and a substituted Caryl group. Also provided is a method of soldering an electrical contact using the amine flux composition.

Amine flux composition and method of soldering

A curable amine flux composition is provided, comprising, as initial components: a resin component having at least two oxirane groups per molecule; an amine fluxing agent represented by formula I: wherein R, R, Rand Rare independently selected from a hydrogen, a substituted Calkyl group, an unsubstituted Calkyl group, a substituted Carylalkyl group and an unsubstituted Carylalkyl group; wherein Rand Rare independently selected from a Calkyl group, a substituted Calkyl group, a Caryl group and a substituted Caryl group or wherein Rand R, together with the carbon to which they are attached, form a Ccycloalkyl ring optionally substituted with a Calkyl group; wherein Rand Rare independently selected from a Calkyl group, a substituted Calkyl group, a Caryl group and a substituted Caryl group or wherein Rand R, together with the carbon to which they are attached, form a Ccycloalkyl ring optionally substituted with a Calkyl group; and, wherein Ris selected from a hydrogen, a Calkyl group, a substituted Calkyl group, a Caryl group and a substituted Caryl group; and, optionally, a curing agent. Also provided is a method of soldering an electrical contact using the curable amine flux composition.

Curable amine flux composition and method of soldering

A method for dispersing a comminuted solid in an aqueous medium is described. An aqueous dispersing agent is added to an aqueous medium in an amount sufficient to disperse the comminuted solid in the aqueous medium. The aqueous dispersing agent includes from about 10 wt. % to about 55 wt. % of an amine compound selected from the group consisting of alkanolamines, triethylamine and morpholine, from about 15 wt. % to about 35 wt. % of a base selected from the group consisting of sodium hydroxide and potassium hydroxide, and from about 0.1 wt. % to about 15 wt. % chelating agent.

Dispersing agents for comminuted solids

A method for dispersing a comminuted solid in an aqueous medium using a combination of an alkanolamine and a polymeric carboxylic acid as the dispersing agent.

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Naperville, IL, United States of America

Glenn Nelson Robinson