Claims
- 1. A snow quality improver comprising a super absorbent polymer in granule form wherein said super absorbent polymer has the following characteristics:
- (a) said polymer retains its original granule form after water absorption without sticking to other granules;
- (b) said polymer has a detonized-water absorbability of about 30 to 500 times the weight of the dry polymer;
- (c) said polymer has an average particle size of about 20 to 500 .mu.m before water absorption; and
- (d) said polymer has an average particle size of about 0.05 to 5 mm after water absorption.
- 2. A snow quality improver according to claim 1 wherein said super absorbent polymer is a water-swollen super absorbent polymer.
- 3. A snow quality improver according to claim 1 wherein said super absorbent polymer is a dry super water absorbent polymer.
- 4. A snow quality improver according to claim 1 wherein said super absorbent polymer is either light-degradable or biodegradable.
- 5. A snow quality improver according to claim 1 wherein said super absorbent polymer is either odored or colored.
- 6. A snow quality improver according to claim 1 wherein said super absorbent polymer is selected from the group consisting of acrylic acid salt polymers, vinylalcohol-acrylic acid salt copolymers and saponified isobutylene maleic anhydride copolymers.
Priority Claims (4)
Number |
Date |
Country |
Kind |
2-24069 |
Feb 1990 |
JPX |
|
2-150729 |
Jun 1990 |
JPX |
|
2-150730 |
Jun 1990 |
JPX |
|
2-214697 |
Aug 1990 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 08/114,443, filed Aug. 30, 1993 and now U.S. Pat. No. 5,436,039 which is a division of application Ser. No. 07/648,186, filed Jan. 31, 1991, now U.S. Pat. No. 5,266,367.
US Referenced Citations (7)
Divisions (2)
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Number |
Date |
Country |
Parent |
114443 |
Aug 1993 |
|
Parent |
648186 |
Jan 1991 |
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