WATER RESISTANT VOIDED POLYMER PARTICLES

Latex emulsions and a process of making the same that incorporates voided latex particles having a core with a hydrophilic component; at least one intermediate shell with, as polymerized units, one or more hydrophilic monoethylenically unsaturated monomer, one or more nonionic monoethylenically unsaturated monomer, or mixtures thereof; an outer shell formed of a polymer having a Tg of at least 60? C; and a surface treatment applied to the outer shell in which a plurality of silicone oligomers with reactive functional groups are cross-linked with one another in order to provide a cross-linked outer surface. The core and the at least one intermediate shell are contacted with a swelling agent in the presence of less than 0.5% monomer based on the overall weight of the voided latex particles. In addition, one or more of the core, the intermediate shell, or the outer shell includes a surfactant. 1. Hollow or voided latex particles comprising:a core comprising a hydrophilic component;at least one intermediate layer comprising, as polymerized units, one or more hydrophilic monoetheylenically unsaturated monomer, one or more nonionic monoethylenically unsaturated monomer, or mixtures thereof;{'sub': 'g', 'an outer shell comprising a polymer having a Tof at least 60° C.; and'}a surface treatment applied to the outer shell comprising a plurality of silicone monomers, oligomers and/or polymers having polymerizable or cross-linkable functional groups, the functional groups being cross-linked with one another in order to provide a cross-linked outer surface;wherein the core and the at least one intermediate layer are contacted with a swelling agent in the presence of less than 0.5% monomer based on the overall weight of the voided latex particles,wherein one or more of the core, the intermediate layer, or the outer shell includes sodium dodecylbenzene sulfonate, and optionally other surfactants.2. The hollow or voided particles of claim 1 , wherein the particles further comprise ...

Pressure sensitive adhesive compositions and method of making the same

The instant invention is a pressure sensitive adhesive composition comprising an ultra-high solid polyurethane dispersion. The ultra-high solid polyurethane dispersion comprises (1) a first component comprising a first polyurethane prepolymer comprising the reaction product of a polyol and polyisocyanate, (2) a second component comprising a media phase selected from the group consisting of a second polyurethane prepolymer emulsion, a low solid content polyurethane dispersion, a seed latex, and combinations thereof; and (3) optionally a chain extender. The ultra-high solid polyurethane dispersion has at least a solid content of at least 60 percent by weight of solid content, based on the total weight of the ultra-high solid polyurethane dispersion, and a viscosity of less than 5000 cps at 20 rpm at 21° C. using spindle #4 with Brookfield viscometer.

Magnetic recording media whose magnetic layer incorporates nonhalogenated vinyl copolymer

Oxygen sensor control system

Water resistant voided polymer particles

Latex emulsions and a process of making the same that incorporates voided latex particles having a core with a hydrophilic component; at least one intermediate shell with, as polymerized units, one or more hydrophilic monoethylenically unsaturated monomer, one or more nonionic monoethylenically unsaturated monomer, or mixtures thereof; an outer shell formed of a polymer having a Tg of at least 60? C; and a surface treatment applied to the outer shell in which a plurality of silicone oligomers with reactive functional groups are cross-linked with one another in order to provide a cross-linked outer surface. The core and the at least one intermediate shell are contacted with a swelling agent in the presence of less than 0.5% monomer based on the overall weight of the voided latex particles. In addition, one or more of the core, the intermediate shell, or the outer shell includes a surfactant.

Oxygen sensor control system

Automatic superconducting pump

Automatic superconducting pump

Synergistic herbicidal composition

Synergistic herbicidal composition