IP Library › Granted Patent US 8,450,508
Granted Patent B2
US 8,450,508 · App. 13/654,805 · Granted May 28, 2013

Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal and process for producing the same

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Quick Facts
Patent No.
US 8,450,508
App. No.
13/654,805
Granted
May 28, 2013
Kind
B2
Abstract

The present invention relates to [1] a method for keeping a quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal useful as a perfume, which comprises incorporating from 50 to 3000 ppm of 1-acetyl-3,4-methylenedioxybenzene in the 2-methyl-3-(3,4-methylenedioxyphenyl)propanal; [2] a process for producing 2-methyl-3-(3,4-methylenedioxyphenyl)propanal having a content range from 50 to 3000 ppm of 1-acetyl-3,4-methylenedioxybenzene; and [3]2-methyl-3-(3,4-methylenedioxyphenylpropanal having a content range from 50 to 3000 ppm of of 1-acetyl-3,4-methylenedioxybenzene.

Claims (4)

1. 2-Methyl-3-(3,4-methylenedioxyphenyl)propanal having a content of 1-acetyl-3,4-methylenedioxybenzene of from 50 to 3000 ppm.

2. 2-Methyl-3-(3,4-methylenedioxyphenyl)propanal according to claim 1 , having a content of 40 ppm or less of acetic acid.

3. 2-Methyl-3-(3,4-methylenedioxyphenyl)propanal according to claim 1 , wherein the 2-methyl-3-(3,4-methylenedioxyphenyl)propanal has a purity of 95% or more.

4. 2-Methyl-3-(3,4-methylenedioxyphenyl)propanal according to claim 2 , wherein the 2-methyl-3-(3,4-methylenedioxyphenyl) propanal has a purity of 95% or more.

Assignments (1)
CHANGE OF NAME Recorded Jul 14, 2023
From: UBE INDUSTRIES, LTD.
To: UBE CORPORATION
Reel/Frame 064275/0021 →