JPS557829A - Preparation of aqueous dispersion of diamine - Google Patents

Preparation of aqueous dispersion of diamine

Info

Publication number
JPS557829A
JPS557829A JP7979578A JP7979578A JPS557829A JP S557829 A JPS557829 A JP S557829A JP 7979578 A JP7979578 A JP 7979578A JP 7979578 A JP7979578 A JP 7979578A JP S557829 A JPS557829 A JP S557829A
Authority
JP
Japan
Prior art keywords
water
polyamine
diamine
pref
sulfuric acid
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.)
Pending
Application number
JP7979578A
Other languages
Japanese (ja)
Inventor
Tatsuo Kinoshita
Takashi Izumi
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.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries 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 Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP7979578A priority Critical patent/JPS557829A/en
Publication of JPS557829A publication Critical patent/JPS557829A/en
Pending legal-status Critical Current

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  • Processes Of Treating Macromolecular Substances (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

PURPOSE: To prepare the title dispersion, economically, without washing with water after the neutralization process, by hydrolyzing a urethane bond-containing polyisocyanate with sulfuric acid and water, neutralizing the hydrolyzate with a basic compound such as calcium, etc., and finally emulsifying the product.
CONSTITUTION: A polyisocyanate having urethane bonds, pref. of formula (R is diol residue having a molecular weight of 500W15,000; R' is divalent hydrocarbon radical; n is 1W25) is hydrolyzed with sulfuric acid and water. The polyamine sulfate thus obtained is neutralized with a basic compound of Ca or Ba, e.g. Ca(OH)2, until pref. ≥55% of the polyamine salt is converted to the free polyamine. The neutralized product is emulsified with an emulsifier, etc. to obtain the objective aqueous solution of diamine.
USE: Waterproofing material, paint, adhesive, etc. by mixing with an epoxy resin, etc.
COPYRIGHT: (C)1980,JPO&Japio
JP7979578A 1978-07-03 1978-07-03 Preparation of aqueous dispersion of diamine Pending JPS557829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7979578A JPS557829A (en) 1978-07-03 1978-07-03 Preparation of aqueous dispersion of diamine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7979578A JPS557829A (en) 1978-07-03 1978-07-03 Preparation of aqueous dispersion of diamine

Publications (1)

Publication Number Publication Date
JPS557829A true JPS557829A (en) 1980-01-21

Family

ID=13700145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7979578A Pending JPS557829A (en) 1978-07-03 1978-07-03 Preparation of aqueous dispersion of diamine

Country Status (1)

Country Link
JP (1) JPS557829A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097869A2 (en) * 1982-06-23 1984-01-11 Bayer Ag Compounds containing aromatic primary amino groups, urethane groups and polyester groups, process for their production, and their application as starting materials for polyurethanes
US4724252A (en) * 1985-08-27 1988-02-09 Bayer Akitengesellschaft Polyamines and a process for their production from polyisocyanates
US4931595A (en) * 1985-10-01 1990-06-05 Bayer Aktiengesellschaft Catalytic hydrolysis process for polyamines
US5283364A (en) * 1985-10-18 1994-02-01 Bayer Aktiengesellschaft Hydrolysis process for polyamines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097869A2 (en) * 1982-06-23 1984-01-11 Bayer Ag Compounds containing aromatic primary amino groups, urethane groups and polyester groups, process for their production, and their application as starting materials for polyurethanes
US4724252A (en) * 1985-08-27 1988-02-09 Bayer Akitengesellschaft Polyamines and a process for their production from polyisocyanates
US4931595A (en) * 1985-10-01 1990-06-05 Bayer Aktiengesellschaft Catalytic hydrolysis process for polyamines
US5283364A (en) * 1985-10-18 1994-02-01 Bayer Aktiengesellschaft Hydrolysis process for polyamines

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