US 5,962,383 AGranted

Cleaning compositions and methods for cleaning resin and polymeric materials used in manufacture

AssigneeKyzen Corporation

InventorsKyle J. Doyel, Michael L. Bixenman, Scotty S. Sengsavang, Kristie L. Gholson, Patricia D. Overstreet, Arthur J. Thompson, Valerie G. Porter

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Abstract

Compositions and methods for cleaning, solvating, and/or removing plastic resins and polymers or other contaminants from manufactured articles or manufacturing equipment, particularly in the production of optical lenses. The compositions contain at least one nitrogen containing compound as well as other optional solvents and additives. The compositions can be contacted with a surface to be cleaned in a number of ways and under a number of conditions depending on the manufacturing or processing variables present.

Claims54

Dependent claims

A method for removing a polymer or resin from a solid surface comprising contacting said surface with at least one composition consisting essentially of:

(A) tetrahydrofurfuryl alcohol, and tetramothylammonium hydroxide;
(B) water;
(C) at least one member of the group consisting of esters, ethers, additional cyclic ethers, ketones, alkanes, terpenes, dibasic esters, pyrrolidones, low or non-ozone depleting chlorinated or chlorinated/fluorinated hydrocarbons, and mixtures thereof;
and
(D) optionally, at least one member of the group consisting of buffers, surfactants, water-soluble glycol ethers, additional water-soluble alcohols, and inorganic hydroxides;
in an effective amount for cleaning said polymers or resins from a surface, said composition having a pH of 7 or greater.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/148,040Filed 3 Sep 1998 · division
Priority: 29 Sep 1997
Granted: 5 Oct 1999
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

C11D 7/262
Alcohols; Phenols: fatty or with at least 8 carbon atoms in the alkyl or alkenyl chain
C11D 3/0078
Other compounding ingredients characterised by their effect: compositions for cleaning contact lenses, spectacles or lenses
C11D 7/261
Containing oxygen: alcohols; Phenols
C11D 7/3209
Containing nitrogen: amines or imines with one to four nitrogen atoms; Quaternized amines