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1 840 454

(13)

(51)

IPC

H05K3/00(2006-01-01)

(21) (22)

Application

3176968/09, 1987-06-29

(22)

Actual filing date

1987-06-29

(45)

Published

2007-03-20

(72)

Inventor

Maksimov Boris NikolaevichRjabinin Nikolaj AleksandrovichSapgir Elena VeniaminovnaGorbunov Valerij Arkad'EvichRasskazov Igor' DmitrievichSokolova Majja EvseevnaOvsjannikova Alla Anatol'EvnaIrisova Elena ValentinovnaRyleeva Natalija AleksandrovnaVershilov Sergej VjacheslavovichMungalov Valerij Evgen'EvichDanilin Jurij IvanovichIvanenkov Anatolij GeorgievichGankin Efim Abramovich

METHOD FOR MOISTURE PROTECTION OF PRINTED-CIRCUIT BOARDS CARRYING ADD-ON COMPONENTS Russian patent published in 2007 - IPC H05K3/00

Abstract SU 1840454 A1

FIELD: electrical engineering; printed-circuit board manufacture.

SUBSTANCE: novelty is that prior-art method involving cleaning of current-conducting components and degreasing after application of moisture-resistant coating includes in addition immersion of degreased board in solution incorporating cyclohexyl amine and synthetic aliphatic acids with carbon atom number C₁₀-C₁₃ or C₁₇-C₂₀ of 0.5 mass percent, which is brought to boiling point in trifluorotrichloroethane and held in boiling solution for 20-30 minutes.

EFFECT: facilitated procedure, enhanced reliability of printed-circuit boards.

1 cl

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SU 1 840 454 A1

Authors

Maksimov Boris Nikolaevich

Rjabinin Nikolaj Aleksandrovich

Sapgir Elena Veniaminovna

Gorbunov Valerij Arkad'Evich

Rasskazov Igor' Dmitrievich

Sokolova Majja Evseevna

Ovsjannikova Alla Anatol'Evna

Irisova Elena Valentinovna

Ryleeva Natalija Aleksandrovna

Vershilov Sergej Vjacheslavovich

Mungalov Valerij Evgen'Evich

Danilin Jurij Ivanovich

Ivanenkov Anatolij Georgievich

Gankin Efim Abramovich

Dates

2007-03-20—Published

1987-06-29—Filed