Cleaning and liquid contact with solids – Processes – Paints – varnishes – lacquers – or enamels – removal
Reexamination Certificate
2001-03-29
2002-11-05
Carrillo, Sharidan (Department: 1746)
Cleaning and liquid contact with solids
Processes
Paints, varnishes, lacquers, or enamels, removal
C134S002000, C134S022100, C134S022110, C134S022140, C134S022190, C134S036000, C134S042000, C510S201000, C510S434000
Reexamination Certificate
active
06475295
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a process for cleaning paint-carrying parts of a paint shop, more particularly paint lines, the paint-carrying parts being rinsed with a rinsing liquid containing an organic solvent.
2. Discussion of the Related Art
All the paint-carrying parts of a paint shop have to be cleaned to remove adhering paint particles and paint residues at least whenever the paint to be processed is changed, for example in its composition or color, or when, for example, the paint shop has to be closed down or maintained. The cleaning of the paint-carrying parts, especially paint lines, can be carried out simply by rinsing, suitable organic solvents being added to the rinsing liquids. After the paint-carrying parts have been cleaned, the spent rinsing liquid has a high organic solvent content of up to 15% by weight, with the result that the spent rinsing liquid has to be expensively disposed of.
SUMMARY OF THE INVENTION
Accordingly, the problem addressed by the present invention was to develop a process for cleaning paint-carrying parts of a paint shop, more particularly paint lines, of the type mentioned at the beginning in such a way that not only would the cleaning effect be improved, but there would also be no need for expensive disposal of the spent rinsing liquid.
According to the invention, the problem stated above is solved by addition of polyaspartic acid as solvent to the rinsing liquid.
REFERENCES:
patent: 5284512 (1994-02-01), Koskan et al.
patent: 5443748 (1995-08-01), Bergishagen et al.
patent: 5468838 (1995-11-01), Boehmke et al.
patent: 5523023 (1996-06-01), Kleinstueck et al.
patent: 5610255 (1997-03-01), Groth et al.
patent: 5658464 (1997-08-01), Hann et al.
patent: 5714558 (1998-02-01), Groth et al.
patent: 5830985 (1998-11-01), Kroner et al.
patent: 6034046 (2000-03-01), Blanvalet et al.
patent: 6231680 (2001-05-01), Gerlach et al.
patent: 6432220 (2002-08-01), Lindemann et al.
patent: 43 05 368 (1994-08-01), None
patent: 43 06 412 (1994-09-01), None
patent: 43 10 503 (1994-10-01), None
patent: 43 10 995 (1994-10-01), None
patent: 43 23 191 (1995-01-01), None
patent: 44 27 233 (1996-01-01), None
patent: 44 28 639 (1996-02-01), None
patent: 0 474 869 (1992-03-01), None
patent: WO/98/22205 (1989-05-01), None
patent: WO 92/15535 (1992-09-01), None
Bohnes Alfred
Bohnes Dirk
Lindemann Johannes
Manderscheid Karl
Aware Chemicals L.L.C.
Carrillo Sharidan
Harper Stephen D.
LandOfFree
Method for cleaning the paint feeding parts of a painting... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for cleaning the paint feeding parts of a painting..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for cleaning the paint feeding parts of a painting... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2940594