Flux for soldering

专利摘要:
A flux composition of the non-corrosive type suitable for use in soft soldering, particularly in the electrical and electronics industries, contains in place of the conventional natural rosin (colophony), an ester of a polyhydric alcohol such as pentaerythritol tetrabenzoate. The composition can be in solid or liquid form and in the latter can perform the multiple functions of an etch resist, a protective coating and a flux in the production of printed circuit assemblies.
公开号:SU1042607A3
申请号:SU772494016
申请日:1977-06-10
公开日:1983-09-15
发明作者:Фрэнсиз Арбиб Гордон；Рубин Валлас
申请人:Малтикор Солдерс Лимитед (Фирма)；
IPC主号:

专利说明:

The invention relates to soldering, in particular, to the composition of the flux for soldering by low-temperature solders, mainly printed circuit boards. When soldering products in electronic and radio equipment, fluxes containing rosin with various additives are commonly used. Such fluxes are often used as a flux filler in LO tubular solids. A disadvantage of such a flux is that when it is heated to brazing temperature, fluxes appear that degrade the properties of the solder joint. A known flux for soldering 2, containing a weightD: benzenesulfonate methyl alumonate, an alkylaminomethyl derivative of ethylene glycol ether, higher fatty alcohols or alkylphenols) 5-70, plasticizer the rest. The flux may contain resin up to 30 wt.%, Solvent up to 20 wt. .. triethanolamine up to 0, 05 wt.%. This flux contains the same deficiencies as indicated. The aim of the invention is to reduce smoke formation. The goal is achieved by the fact that a flux containing an ether obtained by the interaction of a polyhydric alcohol with an acid, and at least one additional element, contains as an ether a neutral ester with a molecular weight of 300–3000, mainly pentaerythritol tetrabenzoate, in which the polyhydric alcohol contains from 2 to 8 hydroxyl groups, mainly pentaerythritol, and as an acid, a saturated or unsaturated fatty acid or monocarboxylic single-core aromatic acid, mainly benzoic acid slot, and at least one additional component selected from the group: aliphatic and aromatic mono-or polycarboxylic acids — adipine va, benzoic, sebacin, fluxing agents — nicotinic acid, 2-chloroethyl-morpholine hydrochloride, chlorohydrate, cyclohexylamine hydrochloride, plastic hydrate, cyclohexylamine, plasticitic benzoate, plasticitic benzoate, plastic hydrate, cyclohexylamine hydrochloride, plastic hydrate cyclohexylamine; polymerized resin, maleate ester of pentazritrite resin, with the following ratio of components, wt%: Ester with molecular weight 300 - 3000, mainly. , pentaerythritol tetrabenzoate, trimethylosanthine tribenzoate 80-99 At least one additional component selected from the groups: aliphatic and aromatic monolyls polycabonic acids, fluxing agents, plasticizers1-20. Flux can be used as a solution, for which it can be added An organic solvent in the amount of 79–80 wt. .. Zfir of a polyhydric alcohol with a higher molecular weight in the composition of the flux reduces the degree of smoke formation, ensures the formation of transparent residues, facilitates inspecting solder joints and easily removable after soldering. . Ether, which has a mol. a weight of at least 300, and preferably in the range from 300 to 3000 and in a solid state at room temperature, can be formed by the reaction of a polyhydric alcohol, for example diethylene glycol, neopentyl glycol,. glycerol, triethylene glycol, dipropylene glycol, trimethyloethane, trimethylopropene, pentaerythritol, dipentaerytrit, sorbitol, mannitol, inositol, or sucrose with an organic mono-orboxylic acid. The corresponding acids may be selected from watch fatty acids, for example, acetic or stearic acid, from unsaturated fatty acids, for example, venous acid, or from aromatic acids, for example, benzoic acid. The most suitable found esters prepared from polyhydric alcohols having 2 - 8, preferably 3 - b hydroxyl groups such as pentaerythritol tetraacetate, pentaerythritol tetrastearate, pentaerythritol tetraoleate, ne (ntaeritritritny tetrabenzoat, mannitol saatsetat hexyl, trietilenovy glycol di... .. Enzoate, glycerol tribenzoate, neopentyl glycol dibenzoate, trimethyl ethane toibenzoate and sucrose octa-yETAT 31 Organic acid that can be included in the flux composition as an additional diluent an agent for imparting significant acidity, which allows the ester to function as a flux, may be an aliphatic or aromatic mono- or polycarbonic acid, such as stearic acid, adipic acid, sebacic acid, linoleic acid, benzoic acid or salicylic acid Amount of organic acid present in the flux composition should be sufficient to allow the ester to function as a flux, and the amount should be sufficient to give an effect ru dilution measuring capability. The flux composition may contain a fluoactivating agent. Such activating agents may be selected from organic acids indicated above monosulfokislot example dyno anew naphthalenesulfonic and elifaticheskih and aromatic amines and their hydrogen halide, e.g. glyco cola, octadecylamine, nicotinic acid, cyclohexylamine hydrochloride, hydrochloride of 2-hloretilmorfolina, hydrochloride di- ethylamine, bromine hundred hydrogen triethyl amine and hydrochloride aniline. Since polyatomic cnnp ethers are usually wax-like or just mild and usually solidify to thicken for some time after being heated to the temperature of the falling temperature, and then cool, a plasticizer can be included in the flux, if necessary, for the remainder of the flux, which itself can to be an ester, such as sucrose benzoate, or the production of abietic acid, such as polymerized rosin,. or Ester of modified abietic acid, for example, maleic rosin pentaerythritol ester. Such hardening agents for flux residues should have a no-lower melting point of at least 100 ° C, and best of all, a melting point of between 100 and 200 ° C. Flux can be used as a filler for tubular low-temperature solders. An example. The solid flux composition was obtained by uniformly mixing seven times at a higher temperature of the following components, weight. Pentaerythritol tetrabenzoate92 Adipic acid 1,5 - Nicotine. acid1,5 sucrose benzoate5 EXAMPLE 2. The solid flux composition was obtained by uniformly mixing with an increased temperature of the following components, wt .: Pentaerythritol tetrabenzoate92 Adipic acid 1.5 Hydrochloride 2-chloroethylmorpholine 1.5 Polymerized rosin 5 At 3 r e. Solid flux composition obtained from the following components, wt.%: Trimethyl ethane tribenzoate 80. Benzolic acid3 Hydrochloric cyclohexylamine 2 Dimerized rosin15 Tribenate and dimerized caifol are melted together. then the mixture is cooled to and benzoic acid and hydrochloride cyclohex% 1 amine are added. The temperature slowly rises while stirring to 150 ° C until a clear solution is obtained. It is then cooled to room temperature. The required flux composition is obtained. PRI me R 4. The solid flux composition was obtained from the following components using a method similar to that described in Example 3%: Pentaerythritol tetrabenzoate80 Trimethyleethane tribenzoate5.

权利要求:
Claims (2)
[1]
1. FLUX FOR SOLDING by low-temperature solders containing ether obtained by the interaction of polyhydric alcohol with acid and at least one additional “component, characterized in that, in order to reduce smoke formation, it contains a neutral ester with a molecular weight of 300 - 3000, mainly pentaerythritic tetrabenzoate, in which the polyhydric alcohol contains from 2 to 8 hydroxyl groups, mainly pentaerythritol, and as an acid, saturated or unsaturated fatty acid or monocarboxylic acid mononuclear aromatic morpholine, cyclohexylamine hydrochloride, plasticizers - sucrose benzoate, polymerized resin, resin pentaerythritol ester containing maleate, with the following components, wtD:
An ester with a molecular weight of 300 to 3000, mainly pentaerythritol tetrabenzoate, trimethyl ethane tribenzoate 80-99
At least one additional component selected from the groups: aliphatic and aromatic mono or polycarboxylic acids, fluxing agents, plasticizers 1 -20
[2]
2. The flux according to claim 1, with the fact that, in order to torment the flux in the form of a solution, it additionally contains an organic solvent in an amount of May 79-80; 3;
»042607

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同族专利:

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公开号 | 公开日

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HK20980A|1980-04-25|

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CH621277A5|1981-01-30|

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AR211186A1|1977-10-31|

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DE2725701C2|1982-06-24|

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PT66649A|1977-07-01|

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SE7706771L|1977-12-12|

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NL175705C|1984-12-17|

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IN146478B|1979-06-16|

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FR2354172A1|1978-01-06|

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GB1550648A|1979-08-15|

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FI63683C|1983-08-10|

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IE45280L|1977-12-11|

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ES459662A1|1978-11-16|

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US4092182A|1978-05-30|

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CH622659A5|1981-04-15|

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NL7706297A|1977-12-13|

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SE8105378L|1981-09-10|

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AU2604077A|1978-12-14|

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BR7703776A|1978-02-28|

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CA1085275A|1980-09-09|

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AU502483B2|1979-07-26|

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IT1083506B|1985-05-21|

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LU77523A1|1977-09-26|

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ZA772799B|1978-04-26|

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NZ184109A|1979-10-25|

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MY8100032A|1981-12-31|

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DE2725701A1|1977-12-22|

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DE2759915C1|1982-07-15|

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TR19703A|1979-10-11|

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JPS5718998B2|1982-04-20|

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FR2354172B1|1982-10-22|

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DK257877A|1977-12-12|

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BE855242A|1977-09-16|

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HU180180B|1983-02-28|

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IL52187A|1982-07-30|

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IE45280B1|1982-07-28|

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HU177241B|1981-08-28|

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PT66649B|1978-11-10|

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FI771674A|1977-12-12|

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FI63683B|1983-04-29|

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NL175705B|1984-07-16|

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ES470622A1|1979-02-01|

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USRE30696E|1981-08-04|

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JPS52152846A|1977-12-19|

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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GB24410/76A|GB1550648A|1976-06-11|1976-06-11|Soft soldering|

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