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Water-loss reducer for gardening

A water-retaining agent and horticultural technology, which can be applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of low water absorption ratio, easy to produce elongation barriers, rooting barriers, etc. The effect of the number of times to supplement

Inactive Publication Date: 2012-09-12
SANYO CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The inventors of the present invention have conducted various investigations on the cause, and as a result, it is considered that the water-absorbing body of the superabsorbent resin constituting the above-mentioned conventional horticultural water-retaining agent has an electrical conductivity exceeding 2.0 mS / cm, so rooting failure occurs remarkably, and it is easy to produce It is also known that due to the low water absorption rate, a large amount of water-retaining agent must be used in order to maintain a predetermined amount of water, or that water must be frequently replenished.

Method used

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  • Water-loss reducer for gardening

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] 230.4 g (3.2 mol) of acrylic acid corresponding to the monomer (C), 1.0 g of pentaerythritol triallyl ether as a crosslinking agent, and 636 g of water were added to a 1 L beaker, and cooled to 10°C. This solution is put into heat-insulated polymerization tank, feeds nitrogen to make the dissolved oxygen of solution be 0.1ppm (utilize Oriente electric company to produce, trade name dissolved oxygen meter DO220PB to measure after), as polymerization initiator, add 35% hydrogen peroxide 0.023g, L-ascorbic acid 0.00575g and potassium persulfate 0.23g. Polymerization started after about 30 minutes and reached a maximum temperature of 72°C after about 2 hours. Furthermore, it was aged at this temperature for 5 hours to complete the polymerization, and the obtained polymer (corresponding to the polymer (Y)) had a hydrogel form. Stir the polymer with a kneader (manufactured by Irie Chamber of Commerce, trade name BENCH KNEADER PNV-1; rotating speed 70rpm) for about 2 hours, c...

Embodiment 2

[0106] Except using the above-mentioned 48% sodium hydroxide aqueous solution 82.7g instead of the 50% calcium hydroxide dispersion liquid 61.6g and 48% sodium hydroxide aqueous solution 64.0g used in Example 1, carry out the same procedure as in Example 1 operation to obtain a superabsorbent resin (2) with an average particle diameter of 500 μm

[0107] (corresponding to polymer (Y)).

Embodiment 3

[0109] Add 43.2 g (0.6 mol) of acrylic acid equivalent to monomer (B), 50.0 g of 48% sodium hydroxide aqueous solution, and 369.2 g (2.6 mol) and water 443.2g, cooled to 5°C. Put the solution into a heat-insulated polymerization tank, feed nitrogen gas to make the dissolved oxygen content of the solution 0.1ppm, then add 0.00016g of 35% hydrogen peroxide, 0.00008g of L-ascorbic acid and 4,4'- Azobis(4-cyanovalerenic acid) 0.04g. After about 30 minutes, the polymerization started, and after about 5 hours, the highest temperature reached about 75° C., and the polymerization was completed to obtain a hydrogel-like polymer (corresponding to the copolymer (X)).

[0110] The gel was stirred with a kneader for 2 hours to be crushed, dried at 120° C. for 1 hour with a belt drier, and crushed to obtain a non-crosslinked dry powder with an average particle diameter of 500 μm. 100 g of this uncrosslinked dry powder with a thickness of 3 mm was put into a stainless steel basin, and heat...

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Abstract

The invention provides a water retention agent for gardening. With small amount, the water retention agent has good water retention and does not produce growth disorder or elongation disorder of root. The water retention agent for gardening comprises resin with high hygroscopicity; and when 1 weight portion of the resin with high hygroscopicity absorbs 100 weight portions of ion exchange water ata temperature of 25 DEG C, the conductivity of a water absorption body is between 0 and 2.0mS / cm, and the water absorbency of the ion exchange water at a temperature of 25 DEG C is between 80 and 1,000 times.

Description

technical field [0001] The present invention relates to a horticultural water-retaining agent of superabsorbent resin. More specifically, it relates to a water-retaining agent for horticulture that has good water-retaining properties even in a small amount and does not cause growth failure or root elongation failure. Background technique [0002] Conventionally, agar, carrageenan, and the like are known as polymer gels used as water-retaining agents for gardening. [0003] One of the cultivation methods of orchids and foliage plants has the method of protocorm-like. This method is used for clonal propagation and is widely used in Orchidaceae because the proliferation of new shoots is hundreds of times faster than the common tillering method. Agar gel is used as a medium for this proliferation method. [0004] However, when transplanting from an agar medium to soil and adapting it to the soil, if the agar is not completely removed, the root will rot due to the rot of the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00C08F20/06C08L33/02
Inventor 糟谷和宏铃木健太塚本俊平塚本满塚本平三郎
Owner SANYO CHEM IND LTD
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