JPS56139580A - Modified polyvinyl alcohol soil conditioner - Google Patents

Modified polyvinyl alcohol soil conditioner

Info

Publication number
JPS56139580A
JPS56139580A JP4261980A JP4261980A JPS56139580A JP S56139580 A JPS56139580 A JP S56139580A JP 4261980 A JP4261980 A JP 4261980A JP 4261980 A JP4261980 A JP 4261980A JP S56139580 A JPS56139580 A JP S56139580A
Authority
JP
Japan
Prior art keywords
polyvinyl alcohol
soil
modified polyvinyl
soil conditioner
anhydride
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4261980A
Other languages
Japanese (ja)
Other versions
JPS6239633B2 (en
Inventor
Toshihiko Yoshitake
Koichi Kajitani
Koji Moriya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuraray Co Ltd
Original Assignee
Kuraray Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP4261980A priority Critical patent/JPS56139580A/en
Publication of JPS56139580A publication Critical patent/JPS56139580A/en
Publication of JPS6239633B2 publication Critical patent/JPS6239633B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To provide an inexpensive soil conditioner which can improve air permeability and water retention of soil, consisting of a highly water-absorbing modified polyvinyl alcohol resin obtd. by the reaction of a polymer composed mainly of polyvinyl alcohol with a cyclic acid anhydride.
CONSTITUTION: A cyclic acid anhydride (e.g. maleic anhydride, phthalic anhydride or succinic anhydride) is reacted with a powered polyvinyl alcohol polymer in an anhydrous state in the presence of a compd. selected from a hydroxide, an alkoxide and a salt of a monovalent metal, a tert. amide and a salt of a tert. amine, whereby carboxyl groups can be introduced into the side chains of the polymer by esterification and at the same time diester intermolecular crosslinking is conducted to produce a highly water-absorbing modified polyvinyl alcohol resin. 0.1W1% above resin as a soil conditioner is mixed with soil, whereby air permeability, caking-preventing property, heat retaining properties, water retention, etc. can moderately by imparted to soil.
COPYRIGHT: (C)1981,JPO&Japio
JP4261980A 1980-03-31 1980-03-31 Modified polyvinyl alcohol soil conditioner Granted JPS56139580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4261980A JPS56139580A (en) 1980-03-31 1980-03-31 Modified polyvinyl alcohol soil conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4261980A JPS56139580A (en) 1980-03-31 1980-03-31 Modified polyvinyl alcohol soil conditioner

Publications (2)

Publication Number Publication Date
JPS56139580A true JPS56139580A (en) 1981-10-31
JPS6239633B2 JPS6239633B2 (en) 1987-08-24

Family

ID=12641029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4261980A Granted JPS56139580A (en) 1980-03-31 1980-03-31 Modified polyvinyl alcohol soil conditioner

Country Status (1)

Country Link
JP (1) JPS56139580A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5725383A (en) * 1980-07-21 1982-02-10 Nippon Synthetic Chem Ind Co Ltd:The Plant growth promotor
JPS59183630A (en) * 1983-04-04 1984-10-18 株式会社クラレ Culture soil sticking agent for plant culture floor
JPS6315881A (en) * 1986-07-08 1988-01-22 Katsuo Orihara Method for retention of water in soil by using synthetic high-molecular gel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102478945B1 (en) 2018-04-25 2022-12-19 주식회사 히타치하이테크 Irradiation condition determination method of charged particle beam device, and charged particle beam device
US20210327048A1 (en) * 2018-11-08 2021-10-21 Hitachi High-Tech Corporation Adjusting Method of Charged Particle Beam Device and Charged Particle Beam Device System

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5725383A (en) * 1980-07-21 1982-02-10 Nippon Synthetic Chem Ind Co Ltd:The Plant growth promotor
JPS621634B2 (en) * 1980-07-21 1987-01-14 Nippon Synthetic Chem Ind
JPS59183630A (en) * 1983-04-04 1984-10-18 株式会社クラレ Culture soil sticking agent for plant culture floor
JPH0318851B2 (en) * 1983-04-04 1991-03-13 Kuraray Co
JPS6315881A (en) * 1986-07-08 1988-01-22 Katsuo Orihara Method for retention of water in soil by using synthetic high-molecular gel

Also Published As

Publication number Publication date
JPS6239633B2 (en) 1987-08-24

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