Ternary azeotropic compositions
    3.
    发明授权
    Ternary azeotropic compositions 失效
    第三种AZEOTROPIC组合物

    公开(公告)号:US3694368A

    公开(公告)日:1972-09-26

    申请号:US3694368D

    申请日:1971-02-26

    Applicant: ALLIED CHEM

    CPC classification number: C23G5/02822 C09D9/005 C11D7/5095 H05K3/26

    Abstract: CERTAIN TERNARY MIXUTRES OF TETRACHLORODIFLUOROETHANE (SYM-, ASYM-, AND MIXTURES THEREOF) ISOPROPANOL AND NITROMETHANE ARE USEFUL AS SOLVENTS TO REMOVE ROSIN FLUXES FROM PRINTED CIRCUIT BOARDS CONTAINING THE SAME. THESE MIXTURES ARE USEFUL NOT ONLY BECAUSE OF THEIR HIGH SOLVENCY CHARACTERISTICS BUT ALSO BECAUSE THEY EXHIBIT ESSENTIALLY THE CONSTANT BOILING CHARACTERISTICS OF A TERNARY AZEOTROPE WHICH IS FORMED BETWEEN THESE COMPONENTS, THEREBY FACILITATING HANDLING AND PURIFICATION OF THE SOLVENT MIXUTRES WITHOUT SIGNIFICANTLY ALTERING THEIR COMPOSITIONS. THE TERNARY MIXTURES DISCLOSED HEREIN EXHIBIT SUBSTANTIALLY HIGHER SOLVENCY CHARACTERISTIS FOR ROSIN FLUXES THAN THE PURE SOLVENTS, TETRACHLORODIFLUOROETHANE, ISOPROPANOL OR NITROMETHANE.

    Tetrachlorodieluoroethane-nitromethane solvent composition
    6.
    发明授权
    Tetrachlorodieluoroethane-nitromethane solvent composition 失效
    四氯异丙醇 - 硝基溶剂组合物

    公开(公告)号:US3634274A

    公开(公告)日:1972-01-11

    申请号:US3634274D

    申请日:1970-06-05

    Applicant: ALLIED CHEM

    CPC classification number: C23G5/02822 C09D9/005 C11D7/5095

    Abstract: TETRACHLORODIFLUOROETHANES (SYM-, UNSYM-, AND MIXTURES THEREOF) AND NITROMETHANE, IN CERTAIN PROPORTIONS, FORM AZEOTROPIC MIXTURES WHICHARE CONSTANT BOILING AND WHICH POSSESSES SOLVENT CHARACTERISTICS FOR CERTAIN ORGANIC POLYMERS SUBSTANTIALLY GREATER THAN EITHER THE TETRACHLORODIFLUOROETHANES OR NITROMETHANE ALONE. THESE MIXTURES ARE USEFUL AS SOLVENT MEDIA FOR COATING AND ADHESIVE COMPOSITIONS AND AS STRIPPING AGENTS TO REMOVE FILMS BONDED ON ORGANIC POLYMERS.

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