Abstract:
The present invention provides stable alkoxy silane containing compositions and methods for the preparation of a stable silane containing composition comprising: (I) a water insoluble or slightly soluble alkoxy silane; (II) emulsifier; (III) water; and (IV) water dispersible or emulsified polymer containing an alkoxy silane functional group. Also provided are two part systems such that an alkoxy silane emulsion comprising components (I)-(III) are combined and the component (IV) may be added upon use of components (I) to (III). Moreover, additional components (V) such as catalysts and pH buffers may be added. The compositions of the present invention are stable for at least about three to twelve months.
Abstract:
Curable compositions comprising stable, water dispersible, curable polymers containing sterically hindered alkoxylated silane groups and acid groups blocked by fugitive bases at 0.1 to 75 weight percent of the total composition and water at 99.9 to 25 weight percent of the total composition are taught herein, as well as methods for the use and manufacture thereof. Additional components, such as emulsifiers, buffers and thickeners are also taught. These compositions are useful as adhesives, sealants and paints. The compositions have improved properties including solvent resistance, adhesion, hardness, abrasion resistance and mar resistance.
Abstract:
The invention relates to processes for producing di-(tertiary aminoalkyl) carbonate including the step of reacting a tertiary alkanolamine with methyl alkyl carbonate in the presence of a transesterification catalyst to form tertiary aminoalkyl alkyl carbonate, wherein some of the tertiary alkanolamine reacts with the tertiary aminoalkyl alkyl carbonate to form di-(tertiary aminoalkyl) carbonate. The invention also relates to processes for producing di-(tertiary aminoalkyl) carbonate including the steps of (i) reacting dimethyl carbonate with an alcohol in the presence of a transesterification catalyst to form a methyl alkyl carbonate, and (ii) reacting a tertiary alkanolamine with the methyl alkyl carbonate formed in step (i) in the presence of a transesterification catalyst to form tertiary aminoalkylalkyl carbonate, wherein some of the tertiary alkanolamine reacts with the tertiary aminoalkyl alkyl carbonate to form di-(tertiary aminoalkyl) carbonate.