EP0000970A2
Expired / Lapsed
EP
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Method for making diperoxyacids
Assignee: Procter and Gamble Co
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Filing: 1978-08-21
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Granted: —
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Expires: 1998-08-21
Abstract
Abstract A continuous process for making aliphatic diperoxyacids comprising continuously adding a dibasic acid having from about 8 to about 16 carbon atoms, sulfuric acid, hydrogen peroxide and water to a continuous stirred reactor. The diperoxyacid formed is continuously withdrawn from the reactor.
Inventors
- 👤 James Berger Camden
- 👤 Mark Lee Mccarty
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 19:20
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3945; B; B01; B01J; B01J19/00; B01J19/18; B01J19/1868; B01J19/1875; C07; C07C; C07C407/00; C07C407/003; C07C409/00; C07C409/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
151 words
A continuous process for making diperoxyacids of the formula - wherein n is from about 6 to about 14 comprising: (a) continuously adding to a stirred reactor of temperature from about 15°C to about 45°C the following materials: (1) hydrogen peroxide; (2) water; (3) sulfuric acid; and (4) a dibasic acid of the formula wherein n is from about 6 to about 14; (b) continuously withdrawing from the reactor diperoxyacid product formed as a result of the oxidation of the dibasic acid; (c) filtering the diperoxyacid product; and (d) washing the diperoxyacid product with water and drying it; wherein the inlet flow rates to the reactor of sulfuric acid, hydrogen peroxide and water are sufficient to maintain a liquid concentration of about 60 % to about 80 % sulfuric acid, about 0.5 % to about 15 % hydrogen peroxide, and about 5 % to about 39.5 % water in the reactor.
Claim 2
Dependent Claim
151 words
A continuous process for making diperoxyacids of the formula - wherein n is from about 6 to about 14 comprising: (a) continuously adding to a stirred reactor of temperature from about 15°C to about 45°C the following materials: (1) hydrogen peroxide; (2) water; (3) sulfuric acid; and (4) a dibasic acid of the formula wherein n is from about 6 to about 14; (b) continuously withdrawing from the reactor diperoxyacid product formed as a result of the oxidation of the dibasic acid; (c) filtering the diperoxyacid product; and (d) washing the diperoxyacid product with water and drying it; wherein the inlet flow rates to the reactor of sulfuric acid, hydrogen peroxide and water are sufficient to maintain a liquid concentration of about 60 % to about 80 % sulfuric acid, about 0.5 % to about 15 % hydrogen peroxide, and about 5 % to about 39.5 % water in the reactor.
Claim 3
Dependent Claim
46 words
A process according to Claim 1 wherein the inlet flow rates of hydrogen peroxide and water are sufficient to maintain a liquid concentration of about 2 - % to about 15 % hydrogen peroxide and about 5 % to about 38 % water in the reactor.
Claim 4
Dependent Claim
24 words
A process according to Claim 2 wherein the aliphatic dibasic acid is dissolved in the sulfuric acid prior to being added to the reactor.
Claim 5
Dependent Claim
14 words
A process according to Claim 3 wherein the aliphatic dibasic acid is dodecanedioic acid.
Claim 6
Dependent Claim
15 words
A process according to Claim 2 wherein the reactor is a high speed, recycle reactor.
Claim 7
Dependent Claim
25 words
A process according to Claim 2 where the reactor is a mixed reactor having both a stirred tank section and a high speed, recycle section.
Claim 8
Dependent Claim
24 words
A process according to Claim 2 where the reactor is a mixed reactor having both a stirred tank section and a plug flow section.
Claim 9
Dependent Claim
24 words
A process according to Claim 2 where the reactor is mixed reactor having both a high speed, recycle section and a plug flow section.
Claim 10
Dependent Claim
28 words
A process according to Claim 2 where the reactor is a mixed reactor having a stirred tank section, a high speed, recycle section and a plug flow section.
References Cited (Backward Citations)
No citation records indexed.
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