Dimethyl sulfoxide formulation in mixture with additive for lowering the crystallization point of same, and applications of said mixture
The invention concerns the use of at least one diol and/or of at least one trial as a an additive to dimethylsulfoxide (DMSO®) in order to lower the crystallization point of same. The DMSO formulation is used in combination with the aforementioned additive as a paint-stripping composition, a surface-cleaning composition, a graffiti-cleaning composition, a surface-cleaning composition in the microelectronics field as a photoresist stripping agent, a DMSO-based agrochemical composition or as a constituent of an aforementioned composition, as a solvent for dissolving polymers, or as a constituent of a composition that is usable in the field of cosmetology or pharmacy.
1. A method of lowering the crystallization point of dimethyl sulfoxide (DMSO) comprising adding to dimethyl sulfoxide an additive comprising at least one diol and/or triol.
2. Method according to claim 1 , characterized in that the diol is selected from the group consisting of ethylene glycol, propylene glycol and hexylene glycol.
3. Method according to claim 1 , characterized in that the triol is glycerol.
4. Method according to claim 1 , further characterized in adding water to the diol and/or triol.
5. Method according to claim 1 , characterized in that the additive comprises, per 100 parts by weight of additive,
(A) 75 to 100 parts by weight of diol and/or triol;
(B) 0 to 15 parts by weight of water; and
(C) 0 to 10 parts by weight of sodium chloride wherein sodium chloride is present only if water is present.
6. Method according to claim 5 , characterized in that the additive comprises 5 to 40 parts by weight per 100 parts by weight of dimethyl sulfoxide and additive.
7. Method according to claim 1 , characterized in that the triol is selected from the group consisting of glycerol and 2-ethyl-2-hydroxymethyl-1,3-propanediol.
8. Method of claim 4 further comprising adding sodium chloride with said water.
9. Method of claim 6 wherein additive comprises 10 to 30 parts by weight per 100 parts by weight of dimethyl sulfoxide and additive.