초록 ▼

Disclosed are lubricant compositions comprising a dispersed hydrated alkali metal borate, a polyalkylene succinic dispersant selected from a polyalkylene succinic anhydride, a mixture of polyalkylene succinic anhydrides or derivatives thereof; and a metal salt of a polyisobutenyl sulfonate. Also dis

Disclosed are lubricant compositions comprising a dispersed hydrated alkali metal borate, a polyalkylene succinic dispersant selected from a polyalkylene succinic anhydride, a mixture of polyalkylene succinic anhydrides or derivatives thereof; and a metal salt of a polyisobutenyl sulfonate. Also disclosed are methods for improving the water tolerance of a lubricant composition and methods for preparing such lubricants comprising a dispersed hydrated alkali metal borate and a dispersant mixture.

대표청구항 ▼

Disclosed are lubricant compositions comprising a dispersed hydrated alkali metal borate, a polyalkylene succinic dispersant selected from a polyalkylene succinic anhydride, a mixture of polyalkylene succinic anhydrides or derivatives thereof; and a metal salt of a polyisobutenyl sulfonate. Also dis

Disclosed are lubricant compositions comprising a dispersed hydrated alkali metal borate, a polyalkylene succinic dispersant selected from a polyalkylene succinic anhydride, a mixture of polyalkylene succinic anhydrides or derivatives thereof; and a metal salt of a polyisobutenyl sulfonate. Also disclosed are methods for improving the water tolerance of a lubricant composition and methods for preparing such lubricants comprising a dispersed hydrated alkali metal borate and a dispersant mixture. said petal-shaped members from said first position to said second position; and a die plate disposed between said support and said rims, said die plate including an array of apertures extending therethrough, each of said apertures being disposed at a position corresponding to a respective one of said wells of said array. 2. An analyte-manipulation apparatus, comprising: a plurality of wells defining an array, wherein each of said wells includes a rim defining an opening at an upper end thereof, with said openings being disposed within a first plane; a support including a plurality of petal-shaped members integrally formed therein at positions corresponding to said wells of said array, with said support being disposed along a second plane above and substantially parallel to said first plane, and with at least one of said petal-shaped members being positioned near each one of said openings; wherein each of said petal-shaped members is movable between (i) a first position, substantially within said second plane, and (ii) a second position, at least partially disposed outside of said second plane and extending at least partially into a nearby well via a respective opening; and a platen including a major surface facing said support, and a plurality of ring-shaped projections extending outwardly from said major surface, with said platen being adapted for movement toward and away from said support, whereby upon moving said platen toward said support, said projections can pressingly engage said petal-shaped members, thereby deflecting said petal-shaped members from said first position to said second position; wherein at least a portion of said petal-shaped members are chemically treated. 3. An analyte-manipulation apparatus, comprising: a plurality of wells defining an array, wherein each of said wells includes a rim defining an opening at an upper end thereof, with said openings being disposed within a first plane; a support including a plurality of petal-shaped members integrally formed therein at positions corresponding to said wells of said array, with said support being disposed along a second plane above and substantially parallel to said first plane, and with at least one of said petal-shaped members being positioned near each one of said openings; wherein each of said petal-shaped members is movable between (i) a first position, substantially within said second plane, and (ii) a second position, at least partially disposed outside of said second plane and extending at least partially into a nearby well via a respective opening; and a platen including a major surface facing said support, and a plurality of ring-shaped projections extending outwardly from said major surface, with said platen being adapted for movement toward and away from said support, whereby upon moving said platen toward said support, said projections can pressingly engage said petal-shaped members, thereby deflecting said petal-shaped members from said first position to said second position; and wherein one or more of said petal-shaped members includes one or more biochemicals immobilized thereon. 4. The apparatus of claim 3, wherein said one or more biochemicals comprise nucleic acids. 5. The apparatus of claim 3, wherein said one or more biochemicals comprise one or more DNA-sequencing reagents. 6. The apparatus of claim 5, wherein said one or more DNA-sequencing reagents are selected from the group consisting of terminators, primers, and a combination thereof. 7. An analyte-manipulation apparatus, comprising: a plurality of wells defining an array; each of said wells including an opening at an upper end thereof; a stack of at least three supports disposed above said openings, each support of said stack including a plurality of petal-shaped members integrally formed therein, and each petal-shaped member of each support being disposed at a position corresponding to a respective one of said wells of said array; wherein each of said