Solder/braze-stop composition
AssigneeInternational Business Machines Corporation
InventorsShankar C. Acharya, Thomas C. Prizzia, Olha Rutigliano
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Abstract
An improved solder/braze-stop composition is impervious to splattered or flowed solder/braze material, is easily coated without streaking, is easily removed and leaves no contaminant residue. The improved solder/braze-stop composition comprises by weight: 40-57% Al.sub.2 O.sub.3 powder; 27-43% Methyl Isobutyl Ketone; and 12-22% of a vehicle comprising by weight: 15-20% Ethyl Cellulose; 75-80% 2- (2-Butoxyethoxy) Ethyl Acetate; and, 5-10% Oleoyl Sarcosine.
Claims9
A solder/braze-stop composition, comprising by weight:
- 40-57% Al.sub.2 O.sub.3 powder;
- 27-43% Methyl Isobutyl Ketone;
- and
- 12-22% of a vehicle comprising by weight:
- 15-20% Ethyl Cellulose;
- 75-80% 2-(2-Butoxyethoxy)Ethyl Acetate;
- and,
- 5-10% Oleoyl Sarcosine.
A solder/braze-stop composition, comprising by weight:
- 48% Al.sub.2 O.sub.3 powder;
- 36% Methyl Isobutyl Ketone;
- and
- 17% of a vehicle comprising by weight:
- 20% Ethyl Cellulose;
- 75% 2-(2-Butoxyethoxy)Ethyl Acetate;
- and,
- 5% Oleoyl Sarcosine.
Dependencies are inferred from the claim text.