Glycol-based cleaning solvent
AssigneeHitachi Techo Engineering Co., Ltd.
InventorsMasayasu Suzuki, Akiyasu Kaneko
Life of this patent
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Abstract
A nonflammable glycol-based cleaning solvent which is not classified as, a hazardous material is provided. Isopropyl bromide (IPB) and/or n-propyl bromide (NPB), both of which being nonflammable solvents, is mixed to a main component comprised of propylene glycol-based solvents. The thus-obtained glycol-based cleaning solvent is given a nonflammable, flameproof characteristic. The first ingredient, comprised of one type of propylene glycol-based solvent or a plurality of types thereof, has a flash point of 28° C. or above. The amount of IPB and/or NPB being added to 100 pts.wt. of the first ingredient is in the range of 10-70 pts.wt., considering the negative influence of IPB and/or NPB on plastics and rubber.
Claims8
A glyco-based cleaning solvent comprising:
- a first ingredient comprised of one type of propylene glycol-based solvent or a plurality of types thereof, and having a flash point of 28° C. or above, and
- a second ingredient comprising isopropyl bromide and/or n-propyl bromide;
- wherein the glycol-based cleaning solvent is given a nonflammable characteristic by mixing 10-70 parts by weight (pts.wt.) of said second ingredient to 100 pts.wt. of said first ingredient.
A glycol-based cleaning solvent comprising:
- a first ingredient comprised of one type of propylene glycol-based solvent or a plurality of types thereof, and having a flash point of 28° C. or above, and
- a second ingredient comprising isopropyl bromide and/or n-propyl bromide;
- wherein 10-70 parts by weight (pts.wt.) of said second ingredient is mixed to 100 pts.wt. of said first ingredient.
Dependencies are inferred from the claim text.