Protease-containing compositions stabilized by propionic acid or

Details Protease-containing compositions stabilized by propionic acid or Protease-containing compositions stabilized by propionic acid or

1991-03-05

1991-12-10

Lieberman, Paul

Compositions

Water-softening or purifying or scale-inhibiting agents

252156, 25217423, 252173, 252DIG2, 252DIG12, C11D 3386, C11D 337

Patent

active

050715860

ABSTRACT:
The present invention is concerned with the stabilization of proteases in built, anionic rich, aqueous detergent compositions. More particularly, applicants have discovered that propionic acid or a propionic salt capable of forming propionic acid unexpectedly increases stability relative to other stabilizers, e.g., formic acid or acetic acid (or salts thereof), used in these compositions.

REFERENCES:
patent: 4243546 (1981-01-01), Shaer
patent: 4261868 (1981-04-01), Hora et al.
patent: 4287082 (1981-09-01), Tolfo et al.
patent: 4305837 (1981-12-01), Kaminsky et al.
patent: 4318818 (1982-03-01), Letton et al.
patent: 4404115 (1983-09-01), Tai et al.
patent: 4507219 (1985-03-01), Hughes
patent: 4515705 (1985-05-01), Moeddel
patent: 4537707 (1985-08-01), Severson, Jr.
patent: 4652394 (1987-03-01), Inamorato et al.
patent: 4820437 (1989-04-01), Skabone et al.

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