| (19) |
 |
|
(11) |
EP 0 414 221 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
26.06.1991 Bulletin 1991/26 |
| (43) |
Date of publication A2: |
|
27.02.1991 Bulletin 1991/09 |
| (22) |
Date of filing: 22.08.1990 |
|
|
| (84) |
Designated Contracting States: |
|
DE ES FR GB IT |
| (30) |
Priority: |
22.08.1989 JP 215738/89
06.09.1989 JP 230778/89
20.06.1990 JP 163886/90
|
| (71) |
Applicant: KAO CORPORATION |
|
Chuo-ku
Tokyo (JP) |
|
| (72) |
Inventors: |
|
- Nebashi, Tsutomu
Minamikouchi-machi,
Tochigi (JP)
- Yamashita, Hiroyuki
Wakayama-shi,
Wakayama (JP)
- Yabe, Shinichi
Utsunomiya-shi,
Tochigi (JP)
- Sai, Fumio
Utsunomiya-shi,
Tochigi (JP)
|
| (74) |
Representative: Hansen, Bernd, Dr. Dipl.-Chem. et al |
|
Hoffmann, Eitle & Partner
Patent- und Rechtsanwälte,
Postfach 81 04 20
81904 München
81904 München (DE) |
|
| |
|
| (54) |
Anti-foaming agent granular product and process for producing the same |
(57) An anti-foaming agent granular product is disclosed, which comprises (a) a silicone
anti-foaming agent; (b) water-soluble starch, a modified water-soluble starch or
a derivative thereof; wherein an (a)/(b) weight ratio is from 0.1 to 0.5 and a total
amount of (a) and (b) is from 30 to 80% by weight based on the total weight of the
granular product, (c) from 0.5 to 40% by weight, based on the total weight of the
granular product, of an inorganic builder or a clay mineral, and (d) from 10 to 40%
by weight, based on the total weight of the granular product, of an organic binder
having a melting point or softening point of from 40 to 160°C. The anti-foaming agent
granular product does not undergo reduction in anti-foaming effect due to oozing of
silicone during storage and has satisfactory solubility even in cold water.