JPS565476A - Polyalkyl-2- 2,4-dihydroxyphenyl -7-hydroxychroman and its preparation - Google Patents

Polyalkyl-2- 2,4-dihydroxyphenyl -7-hydroxychroman and its preparation

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Publication number
JPS565476A
JPS565476A JP8013479A JP8013479A JPS565476A JP S565476 A JPS565476 A JP S565476A JP 8013479 A JP8013479 A JP 8013479A JP 8013479 A JP8013479 A JP 8013479A JP S565476 A JPS565476 A JP S565476A
Authority
JP
Japan
Prior art keywords
hydroxychroman
dihydroxyphenyl
formula
polyalkyl
resin
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
JP8013479A
Other languages
Japanese (ja)
Inventor
Isao Hashimoto
Hirohiko Nanbu
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 JP8013479A priority Critical patent/JPS565476A/en
Publication of JPS565476A publication Critical patent/JPS565476A/en
Pending legal-status Critical Current

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Abstract

NEW MATERIAL:A polyalkyl-2-(2,4-dihydroxyphenyl)-7-hydroxychroman of formula I (R1 and R2 are 1W3C primary alkyl groups; R3 is H, 1W2C alkyl and an alkyl group having one carbon atom less than R2).
EXAMPLE: 2,4,4-Trimethyl-2-(2,4-dihydroxyphenyl)-7-hydroxychroman.
USE: An intermediate for preparing an agricultural chemical, a medicine or an additive for a resin or monomer component of a copolymer used for modifying a resin.
PROCESS: Resorcin is condensed with an aliphatic ketone of formula II in the presence of an acidic catalyst, preferably sulfuric acid or a cation exchange resin, at 15W 120°C to give the compound of formula I.
COPYRIGHT: (C)1981,JPO&Japio
JP8013479A 1979-06-27 1979-06-27 Polyalkyl-2- 2,4-dihydroxyphenyl -7-hydroxychroman and its preparation Pending JPS565476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8013479A JPS565476A (en) 1979-06-27 1979-06-27 Polyalkyl-2- 2,4-dihydroxyphenyl -7-hydroxychroman and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8013479A JPS565476A (en) 1979-06-27 1979-06-27 Polyalkyl-2- 2,4-dihydroxyphenyl -7-hydroxychroman and its preparation

Publications (1)

Publication Number Publication Date
JPS565476A true JPS565476A (en) 1981-01-20

Family

ID=13709763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8013479A Pending JPS565476A (en) 1979-06-27 1979-06-27 Polyalkyl-2- 2,4-dihydroxyphenyl -7-hydroxychroman and its preparation

Country Status (1)

Country Link
JP (1) JPS565476A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688770A2 (en) 1994-06-23 1995-12-27 Sumitomo Chemical Company, Limited Process for preparing hydroxyflavan compounds
CN100398530C (en) * 2006-10-13 2008-07-02 北京化工大学 A kind of preparation method of polyalkyl hydroxychroman derivative
WO2017164292A1 (en) * 2016-03-25 2017-09-28 住友化学株式会社 Method for producing condensate of resorcin and acetone

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688770A2 (en) 1994-06-23 1995-12-27 Sumitomo Chemical Company, Limited Process for preparing hydroxyflavan compounds
US5698717A (en) * 1994-06-23 1997-12-16 Sumitomo Chemical Company, Limited Process for preparing hydroxyflavan compounds
CN100398530C (en) * 2006-10-13 2008-07-02 北京化工大学 A kind of preparation method of polyalkyl hydroxychroman derivative
WO2017164292A1 (en) * 2016-03-25 2017-09-28 住友化学株式会社 Method for producing condensate of resorcin and acetone

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