Claims
- 1. A process for the formation of an essentially dry composition which, upon admixture with an aqueous solution containing about 12 to 18.5% hydrochloric acid, forms a stable catalyst solution for catalyzing a substrate prior to deposition of an electroless metal, said process comprising the steps of providing a liquid catalyst solution that is the product of admixture in hydrochloric acid of a catalytic metal halide with a stannous halide in molar excess of the catalytic metal halide, said liquid catalyst composition comprising acid in an amount sufficient to prevent hydrolysis; drying said liquid catalyst composition; and mixing stannous halide with the product obtained by drying said liquid catalyst composition to protect against the effects of atmospheric oxidation, said stannous halide being added in excess.
- 2. The process of claim 1 where the catalytic metal halide is a halide of a member selected from the group of halides of gold, platinum, palladium, rhodium, osmium, iridium, and mixtures thereof.
- 3. The process of claim 2 where all of said halides are chlorides.
- 4. The process of claim 3 where said catalytic metal is palladium.
- 5. The product formed by the process of claim 1.
- 6. The product formed by the process of claim 4.
- 7. A process for making a catalyst composition for catalyzing a substrate prior to electroless metal deposition, said process comprising dispersing the product of claim 6 in an aqueous solution containing about 12 to 18.5% hydrochloric acid.
- 8. A process for making a catalyst composition for catalyzing a substrate prior to electroless metal deposition, said process comprising dispersing the product of claim 6 in an aqueous solution of an acid having a concentration sufficient to prevent hydrolysis of the tin component at the final concentration of the mixture.
- 9. A process for making a catalyst composition for catalyzing a substrate prior to electroless metal deposition, said process comprising dispersing the product of claim 5 in an aqueous solution containing about 12 to 18.5% hydrochloric acid.
- 10. A process for making a catalyst composition for catalyzing a substrate prior to electroless metal deposition, said process comprising dispersing the product of claim 5 in an aqueous solution of an acid having a concentration sufficient to prevent hydrolysis of the tin component at the final concentration of the mixture.
CROSS-REFERENCES TO RELATED APPLICATIONS
This application is a continuation of U.S. application Ser. No. 869,237, filed Jan. 13, 1978, which in turn is a continuation of U.S. application Ser. No. 639,440, filed Dec. 10, 1975, now abandoned, which in turn is a continuation of U.S. application Ser. No. 531,724, filed Dec. 11, 1974, now U.S. Pat. No. 3,960,573, which in turn is a continuation of U.S. application Ser. No. 278,429, filed Aug. 7, 1972, now abandoned, which in turn is a continuation-in-part of U.S. application Ser. No. 9,060, filed Feb. 5, 1970, now abandoned which in turn is a continuation-in-part of U.S. application Ser. No. 801,167 filed Feb. 20, 1969, now U.S. Pat. No. 3,672,938, which in turn is a continuation-in-part of U.S. application Ser. No. 712,575, filed Mar. 12, 1968, now abandoned, which in turn is a continuation of U.S. application Ser. No. 551,249, filed May 19, 1966, now abandoned, which in turn is a continuation of U.S. application Ser. No. 285,889, filed June 6, 1963, now abandoned, which in turn is a continuation of U.S. application Ser. No. 53,352, filed Sept. 1, 1960, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3672923 |
Zeblisky |
Jun 1972 |
|
4020009 |
Gulla |
Apr 1977 |
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Continuations (7)
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Number |
Date |
Country |
Parent |
869237 |
Jan 1978 |
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Parent |
639440 |
Dec 1975 |
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Parent |
531724 |
Dec 1974 |
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Parent |
278429 |
Aug 1972 |
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Parent |
551249 |
May 1966 |
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Parent |
285889 |
Jun 1963 |
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Parent |
53352 |
Sep 1960 |
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Continuation in Parts (3)
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Number |
Date |
Country |
Parent |
9060 |
Feb 1970 |
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Parent |
801167 |
Feb 1969 |
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Parent |
712575 |
Mar 1968 |
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