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Curable amine flux composition and method of soldering

A technology of flux and composition, which is applied in chemical instruments and methods, preparation of organic compounds, preparation of amino hydroxyl compounds, etc., and can solve problems such as reducing the reliability of product equipment

Inactive Publication Date: 2015-05-06
ROHM & HAAS ELECTRONICS MATERIALS LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is unwanted as it can create voids in the gap between the semiconductor chip and the substrate, reducing the reliability of the product device

Method used

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  • Curable amine flux composition and method of soldering
  • Curable amine flux composition and method of soldering
  • Curable amine flux composition and method of soldering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1: the synthesis of amine flux

[0055] The 2,6-diamino-2,5,6-trimethylheptan-3-olamine flux was prepared by the following method. First, the following synthetic method was used to prepare 2,5,6-trimethyl-2,6-dinitroheptan-3-ol intermediate

[0056]

[0057] Specifically, a stirring bar, a pair of thermocouples, a dropping funnel with a nitrogen inlet and a lid for a condenser were installed in a three-necked round bottom flask. The flask was then charged with 2-nitropropane (50 g, 0.56 mol, 5.0 equiv) and a catalytic amount of 1,8-diazabicyclo[5.4.0]undec-7-ene. The contents of the flask were then stirred under nitrogen for 30 minutes. Crotonaldehyde (7.9 g, 9.2 mL, 0.112 mol, 1.0 equiv) was then added dropwise to the flask over twenty minutes. The contents of the flask were then stirred under nitrogen for 5-6 hours, during which time a white solid was observed to precipitate out of solution. At this point, GC analysis showed the absence of any croton...

Embodiment 2

[0061] Embodiment 2: the synthesis of amine flux

[0062] 2,6-diamino-2,6-dimethyl-5-phenylheptan-3-olamine flux was prepared by the following method. First, 2,6-dimethyl-2,6-dinitro-5-phenylheptan-3-ol intermediate was prepared by the following synthetic method

[0063]

[0064] Specifically, a stirring bar, a pair of thermocouples, a dropping funnel with a nitrogen inlet and a lid for a condenser were installed in a three-necked round bottom flask. The flask was then charged with 2-nitropropane (101.1 g, 1.14 mol, 6.0 equiv) and a catalytic amount of 1,8-diazabicyclo[5.4.0]undec-7-ene ("DBU"). The contents of the flask were then stirred under nitrogen for 20 minutes. Trans-cinnamaldehyde (25.0 g, 0.19 mole, 1.0 equiv) was then added dropwise to the flask over twenty minutes. During the dropwise addition of trans-cinnamaldehyde, an exotherm of approximately 22°C was observed. After complete addition of trans-cinnamaldehyde, the contents of the flask were heated to 50°C...

Embodiment 3

[0068] Embodiment 3: the synthesis of amine flux

[0069] Amine fluxes with the following structure

[0070]

[0071] Prepared by the following method. Specifically, the product of Example 1 (0.05 mol) was added to a reaction vessel with a stirrer bar. The reactor was then placed on a heating mantle with magnetic stirring. The reaction vessel was then inertized with nitrogen, and (0.1 mol) 2-ethylhexyl glycidyl ether (supplied by Momentive Performance Materials) was then added to the reaction vessel at ambient temperature with stirring. The set temperature of the heating mantle was then raised to 75°C and the contents of the reaction vessel were allowed to continue stirring for two (2) hours. The set temperature of the heating mantle was then increased to 140°C and the contents of the reaction vessel were allowed to stir for an additional two (2) hours. The set temperature of the heating mantle was then lowered to 80°C and the reaction vessel was evacuated, reducing the...

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Abstract

A curable amine flux composition is provided, comprising, as initial components: a resin component having at least two oxirane groups per molecule; an amine fluxing agent represented by formula I: wherein R1, R2, R3 and R4 are independently selected from a hydrogen, a substituted C1-80 alkyl group, an unsubstituted C1-80 alkyl group, a substituted C7-80 arylalkyl group and an unsubstituted C7-80 arylalkyl group; wherein R7 and R8 are independently selected from a C1-20 alkyl group, a substituted C1-20 alkyl group, a C6-20 aryl group and a substituted C6-20 aryl group or wherein R7 and R8, together with the carbon to which they are attached, form a C3-20 cycloalkyl ring optionally substituted with a C1-6 alkyl group; wherein R10 and R11 are independently selected from a C1-20 alkyl group, a substituted C1-20 alkyl group, a C6-20 aryl group and a substituted C6-20 aryl group or wherein R10 and R11, together with the carbon to which they are attached, form a C3-20 cycloalkyl ring optionally substituted with a C1-6 alkyl group; and, wherein R9 is selected from a hydrogen, a C1-30 alkyl group, a substituted C1-30 alkyl group, a C6-30 aryl group and a substituted C6-30 aryl group; and, optionally, a curing agent. Also provided is a method of soldering an electrical contact using the curable amine flux composition.

Description

technical field [0001] The present invention relates to a curable amine flux composition comprising, as starting components: a resin component having at least two epoxy groups per molecule; an amine flux represented by formula I , where R 1 , R 2 , R 3 and R 4 independently selected from hydrogen, substituted C 1-80 Alkyl, unsubstituted C 1-80 Alkyl, substituted C 7-80 Arylalkyl and unsubstituted C 7-80 Arylalkyl; where R 7 and R 8 are independently selected from C 1-20 Alkyl, substituted C 1-20 Alkyl, C 6-20 Aryl and Substituted C 6-20 Aryl, or where R 7 and R 8 together with the carbon atoms to which they are attached form optionally C 1-6 Alkyl substituted C 3-20 cycloalkyl ring; where R 10 and R 11 independently selected from C 1-20 Alkyl, substituted C 1-20 Alkyl, C 6-20 Aryl and Substituted C 6-20 Aryl, or where R 10 and R 11 together with the carbon atoms to which they are attached form optionally C 1-6 Alkyl substituted C 3-20 cycloalkyl ring;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/363B23K1/00C07C213/02C07C215/18C07C215/28C07C217/28C07C213/04
CPCB23K1/0016B23K1/203B23K35/3615B23K35/362B23K2101/38B23K2101/42B23K35/365C07C211/09
Inventor D·D·弗莱明M·K·贾伦杰K·S·宏刘向前A·A·皮尔拉G·鲁滨逊I·汤姆林森M·R·温克勒
Owner ROHM & HAAS ELECTRONICS MATERIALS LLC