JPS56127617A - Water absorbing polyurethane composition and its preparation - Google Patents

Water absorbing polyurethane composition and its preparation

Info

Publication number
JPS56127617A
JPS56127617A JP3066680A JP3066680A JPS56127617A JP S56127617 A JPS56127617 A JP S56127617A JP 3066680 A JP3066680 A JP 3066680A JP 3066680 A JP3066680 A JP 3066680A JP S56127617 A JPS56127617 A JP S56127617A
Authority
JP
Japan
Prior art keywords
water absorbing
polyvinyl alcohol
component
finely powdered
preparation
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
JP3066680A
Other languages
Japanese (ja)
Other versions
JPS6318623B2 (en
Inventor
Toshihiko Yoshitake
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 JP3066680A priority Critical patent/JPS56127617A/en
Publication of JPS56127617A publication Critical patent/JPS56127617A/en
Publication of JPS6318623B2 publication Critical patent/JPS6318623B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a composition suitable for a water stopping material of waterprofing work, piping, a water tank, etc. having improved water absorbing properties, by dispersing a finely powdered highly water absorbing resin in a polyurethane matrix.
CONSTITUTION: (A) A polymerization raw material or a precursor for polyurethane is incorporated with (B) a finely powdered highly water absorbing resin, and if necessary (C) an organic powder, e.g. starch or polyvinyl alcohol, and/or inorganic powder at a component (A)/(B)/(C) weight ratio of preferably 20W50/5W40/ 75W10, and the resultant mixture is polymerized and molded. The component (B) has a water absorbing ability of 2 times or more the own weight thereof and is preferably obtained by reacting a powdery polyvinyl alcohol polymer with a cyclic acid anhydride, and esterifying the reaction product to introduce carboxyl groups and diester crosslinkages into the chain simultaneously.
COPYRIGHT: (C)1981,JPO&Japio
JP3066680A 1980-03-10 1980-03-10 Water absorbing polyurethane composition and its preparation Granted JPS56127617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3066680A JPS56127617A (en) 1980-03-10 1980-03-10 Water absorbing polyurethane composition and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3066680A JPS56127617A (en) 1980-03-10 1980-03-10 Water absorbing polyurethane composition and its preparation

Publications (2)

Publication Number Publication Date
JPS56127617A true JPS56127617A (en) 1981-10-06
JPS6318623B2 JPS6318623B2 (en) 1988-04-19

Family

ID=12310056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3066680A Granted JPS56127617A (en) 1980-03-10 1980-03-10 Water absorbing polyurethane composition and its preparation

Country Status (1)

Country Link
JP (1) JPS56127617A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61225249A (en) * 1985-03-29 1986-10-07 Toyoda Gosei Co Ltd Water-swelling composition
JP2007186657A (en) * 2006-01-16 2007-07-26 Kanai Educational Institution Highly water-absorbing polyurethane composite material, method for producing the same and frog
WO2010113888A1 (en) * 2009-03-30 2010-10-07 株式会社クラレ Resin composition and multi-layered structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4944580A (en) * 1972-07-06 1974-04-26
JPS506226A (en) * 1973-05-18 1975-01-22
JPS5018917A (en) * 1973-06-05 1975-02-27
JPS5182991A (en) * 1974-12-09 1976-07-21 Personal Products Co
JPS5380459A (en) * 1976-12-24 1978-07-15 Hoechst Ag Water vapor absorbing and water vapor transmitting polyurethane sheettshaped molded form and its production method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4944580A (en) * 1972-07-06 1974-04-26
JPS506226A (en) * 1973-05-18 1975-01-22
JPS5018917A (en) * 1973-06-05 1975-02-27
JPS5182991A (en) * 1974-12-09 1976-07-21 Personal Products Co
JPS5380459A (en) * 1976-12-24 1978-07-15 Hoechst Ag Water vapor absorbing and water vapor transmitting polyurethane sheettshaped molded form and its production method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61225249A (en) * 1985-03-29 1986-10-07 Toyoda Gosei Co Ltd Water-swelling composition
JPH0434574B2 (en) * 1985-03-29 1992-06-08 Toyoda Gosei Kk
JP2007186657A (en) * 2006-01-16 2007-07-26 Kanai Educational Institution Highly water-absorbing polyurethane composite material, method for producing the same and frog
WO2010113888A1 (en) * 2009-03-30 2010-10-07 株式会社クラレ Resin composition and multi-layered structure
US8877865B2 (en) 2009-03-30 2014-11-04 Kuraray Co., Ltd. Resin composition and multilayered structure

Also Published As

Publication number Publication date
JPS6318623B2 (en) 1988-04-19

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