Purine class compounds in detergent compositions

Compositions – Electrolytes for electrical devices

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

252 99, 252102, 252135, 252156, 25217412, 252390, 252394, 252524, 252542, 134 252, C11D 328, C11D 3395, C11D 732, C11D 754

Patent

active

054684102

ABSTRACT:
A detergent composition which prevents tarnishing of silver and silver-plated articles is described. The composition comprises 1-20 weight percent of a peroxygen or hypohalite bleaching agent, 0.05 to about 10 weight percent of a purine class compound used as a silver anti-tarnishing agent, from 1 to 75 weight percent of a builder, and 0 to 40 weight percent of a surfactant provided that the pK.sub.a of the purine class compound is below a pH of an aqueous solution of the composition in which it is incorporated. A method of using the composition is also described.

REFERENCES:
patent: 2618606 (1952-11-01), Schaeffer
patent: 2618608 (1952-11-01), Schaeffer
patent: 3332882 (1967-07-01), Blumbergs et al.
patent: 3956158 (1976-05-01), Donaldson
patent: 4128494 (1978-12-01), Schirmann et al.
patent: 4144226 (1979-03-01), Crutchfield et al.
patent: 4146495 (1979-03-01), Crutchfield et al.
patent: 4260528 (1981-04-01), Fox et al.
patent: 4271030 (1981-06-01), Brierley et al.
patent: 4279769 (1981-07-01), Yagi et al.
patent: 4321166 (1982-03-01), McGrady
patent: 4431559 (1984-02-01), Ulrich
patent: 4511487 (1985-04-01), Pruhs et al.
patent: 4620936 (1986-11-01), Kielman et al.
patent: 4649025 (1987-03-01), Hwa et al.
patent: 4740327 (1988-04-01), Julemont et al.
patent: 4752409 (1988-06-01), Drapier et al.
patent: 4836948 (1989-06-01), Corring
patent: 4859358 (1989-08-01), Gabriel et al.
patent: 4867896 (1989-09-01), Elliott et al.
patent: 4933101 (1990-06-01), Cilley et al.
patent: 5141664 (1992-08-01), Corring
patent: 5200236 (1993-04-01), Lang et al.
patent: 5230822 (1993-07-01), Kamel et al.
patent: 5314635 (1994-05-01), Hage et al.
Singh et al., "Silver tarnishing and its prevention--A review," Anti-corrosion Methods Mater, 30 (Jul. 1983), pp. 4-8.
Cotton, J. B. et al., "Benzotriazole and Related Compounds as Corrosion Inhibitors for Copper," Brit. corros. J., Jan. 1967, vol. 2, pp. 1-4.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Purine class compounds in detergent compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Purine class compounds in detergent compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Purine class compounds in detergent compositions will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1134828

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.