公开(公告)号：US3575867A

公开(公告)日：1971-04-20

申请号：US3575867D

申请日：1969-02-06

Applicant: ALLIED CHEM

Inventor： NESBITT RAYMOND A ,  FIGIEL FRANCIS J

IPC: C09K5/04 ,  C09D9/00 ,  C10M105/00 ,  C10N30/10 ,  C10N40/08 ,  C10N70/00 ,  C11D1/00 ,  C11D7/50 ,  C23G5/02 ,  C23G5/028 ,  G03C11/06

CPC classification number: G03C11/06 ,  C10M1/08 ,  C10M2211/022 ,  C10M2211/06 ,  C10M2215/16 ,  C10N2240/08 ,  C11D7/5095 ,  C23G5/02822

Abstract: CERTAIN MIXTURES OF TETRACHLORODIFLUOROETHANE AND ACETONITRILE ARE USEFUL AS SOLVENTS TO REMOVE ROSIN FLUXES FROM PRINTED CIRCUIT BOARDS. THESE MIXTURES ARE USEFUL BECAUSE OF THEIR UNUSUALLY HIGH SOLVENCY CHARACTERISTICS. A NARROWER CLASS OF SUCH MIXTURES IS PARTICULARLY VALUABLE BECAUSE, IN ADDITION TO HIGH SOLVENCY CHARACTERISTICS, THE MIXTURES EXHIBIT AZEOTROPIC CONSTANT BOILING CHARACTERISTICS, THEREBY FACILITATING HANDLING AND PURIFICATION OF THE SOLVENT MIXTURES WITHOUT SIGNIFICANTLY ALTERING THEIR COMPOSITIONS.

公开(公告)号：US3553142A

公开(公告)日：1971-01-05

申请号：US3553142D

申请日：1968-12-23

Applicant: ALLIED CHEM

Inventor： FIGIEL FRANCIS J ,  NESBITT RAYMOND A

IPC: C09K5/04 ,  C07C19/08 ,  C10M105/00 ,  C10N30/10 ,  C10N40/08 ,  C10N70/00 ,  C11D7/50 ,  C23G5/02 ,  C23G5/028 ,  C11D7/30

CPC classification number: C23G5/02819 ,  C10M3/00 ,  C10M2211/022 ,  C10M2211/06 ,  C10M2215/16 ,  C10N2240/08

Abstract: CERTAIN MIXTURES OF 1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE AND ACETONITRILE ARE USEFUL AS SOLVENTS TO REMOVE ROSIN FLUXES FROM PRINTED CIRCUIT BOARDS. THESE MIXTURES ARE USEFUL BECAUSE OF THEIR UNUSUALLY HIGH SOLVENCY CHARACTERISTICS. A NARROWER CLASS OF SUCH MIXTURES IS-PARTICULARLY VALUABLE BECAUSE, IN ADDITION TO HIGH SOLVENCY CHARACTERISTICS, THE MIXTURES EXHIBIT ESSENTIALLY THE CONSTANT BOILING CHARACTERISTICS OF A BINARY AZEOTROPE WHICH IS FORMED BETWEEN THESE COMPONENTS, THEREBY FACILIATING HANDLING AND PURIFICATION OF THE SOLVENT MIXTURES WITHOUT SIGNIFICANTLY ALTERING THEIR COMPOSITIONS.