METHODS FOR THE SPRAY APPLICATION OF COATINGS USING SUBCRITICAL COMPRESSED FLUIDS TO REDUCE VISCOSITY AND ENHANCE ATOMIZATION
    1.
    发明申请
    METHODS FOR THE SPRAY APPLICATION OF COATINGS USING SUBCRITICAL COMPRESSED FLUIDS TO REDUCE VISCOSITY AND ENHANCE ATOMIZATION 审中-公开
    使用亚临界压缩流体喷涂涂料以降低粘度并增强雾化的方法

    公开(公告)号:WO0029127A2

    公开(公告)日:2000-05-25

    申请号:PCT/US9927303

    申请日:1999-11-17

    CPC classification number: B05D1/025 B05D2401/90

    Abstract: Processes are disclosed for the use of subcritical compressed fluids, such as carbon dioxide or ethane, to reduce viscosity and to enhance atomization when spray applying coating compositions containing low molecular weight polymers to substrates, by using spray conditions that produce choked flow in the liquid mixture being sprayed, wherein the subcritical compressed fluid is a gas at standard conditions of 0 DEG C temperature and one atmosphere pressure and is miscible with the coating composition.

    Abstract translation: 公开了使用亚临界压缩流体如二氧化碳或乙烷来降低粘度并在通过使用在液体混合物中产生堵塞流的喷雾条件将含有低分子量聚合物的涂料组合物喷涂到基材上时增强雾化的方法 其中亚临界压缩流体是在0℃温度和1个大气压的标准条件下的气体并且可与涂料组合物混溶。

    4.
    发明专利
    未知

    公开(公告)号:ES2151581T3

    公开(公告)日:2001-01-01

    申请号:ES95308100

    申请日:1995-11-13

    Abstract: This invention relates to methods for spraying liquid compositions containing volatile solvent by using compressed fluids, such as carbon dioxide or ethane, to form solid particulates, coating powders, and catalyst materials, which can be produced with narrow particle size distributions and can be sprayed at higher solids levels, in ambient air or with heated air applied to just the spray instead of a spray chamber. Novel catalyst supports can be produced having a beneficial morphology such as for olefin catalysis. Drier water-borne coatings can be applied to substrates by using compressed fluids to spray water-borne coating compositions having conventional water levels, thereby reducing runs and sags and shortening dry times.

    5.
    发明专利
    未知

    公开(公告)号:AT195665T

    公开(公告)日:2000-09-15

    申请号:AT95308100

    申请日:1995-11-13

    Abstract: This invention relates to methods for spraying liquid compositions containing volatile solvent by using compressed fluids, such as carbon dioxide or ethane, to form solid particulates, coating powders, and catalyst materials, which can be produced with narrow particle size distributions and can be sprayed at higher solids levels, in ambient air or with heated air applied to just the spray instead of a spray chamber. Novel catalyst supports can be produced having a beneficial morphology such as for olefin catalysis. Drier water-borne coatings can be applied to substrates by using compressed fluids to spray water-borne coating compositions having conventional water levels, thereby reducing runs and sags and shortening dry times.

    9.
    发明专利
    未知

    公开(公告)号:ES2111701T3

    公开(公告)日:1998-03-16

    申请号:ES93120448

    申请日:1993-12-17

    Abstract: A process of spraying a polymeric compsn. to form a spray of finely atomised liq. droplets comprises (1) forming in a closed system a liq. mixt. a temp. T0 comprising: (a) a non-volatile fraction contg. at least one polymer that is cable of being sprayed; and (b) a solvent fraction that is partially miscible with (a) and contains an amt. of at least one compressed fluid sufficient, when it is added to (a); (i) to make the viscosity of the mixt. suitable for spraying; and (ii) to let the liq. mixt. form a liq. compressed fluid phase at temp. T0 the compressed fluid being a gas at 0 deg. C and 1 atmos. pressure; and (2) spraying the liq. mixt. by passing it at temp. T0 and spray pressure P, into an orifice, through which the mixt. flows to form a liq. spray, where spray pressure P1 is above the min. pressure P2 at which the liq. mixt. forms a liq. compressed fluid phase at temp. T0, thus passing the liq. mixt. through the liq.-liq. region of the polymer compsn. and compressed fluid during depressurisation.

    10.
    发明专利
    未知

    公开(公告)号:DE69316733D1

    公开(公告)日:1998-03-05

    申请号:DE69316733

    申请日:1993-12-17

    Abstract: A process of spraying a polymeric compsn. to form a spray of finely atomised liq. droplets comprises (1) forming in a closed system a liq. mixt. a temp. T0 comprising: (a) a non-volatile fraction contg. at least one polymer that is cable of being sprayed; and (b) a solvent fraction that is partially miscible with (a) and contains an amt. of at least one compressed fluid sufficient, when it is added to (a); (i) to make the viscosity of the mixt. suitable for spraying; and (ii) to let the liq. mixt. form a liq. compressed fluid phase at temp. T0 the compressed fluid being a gas at 0 deg. C and 1 atmos. pressure; and (2) spraying the liq. mixt. by passing it at temp. T0 and spray pressure P, into an orifice, through which the mixt. flows to form a liq. spray, where spray pressure P1 is above the min. pressure P2 at which the liq. mixt. forms a liq. compressed fluid phase at temp. T0, thus passing the liq. mixt. through the liq.-liq. region of the polymer compsn. and compressed fluid during depressurisation.

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