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EP0106293A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for polymerization of acrylate or methacrylate

Assignee: Kanegafuchi Chemical Industry Co Ltd
•
Filing: 1983-10-08
•
Granted: —
•
Expires: 2003-10-08
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Abstract

Abstract In a process for polymerizing an acrylate or a methacrylate monomer alone, a mixture thereof or a mixture of an acrylate or a methacrylate monomer as a main component and other copolymerizable monomers in the presence of water, an emulsifiers and a polymerization initiator soluble in water or the monomers; the improvement which comprises carrying out that the polymerization in a polymerization vessel having a film on an inner surface thereof and on surfaces of attached instruments within the vessel, said film being formed by applying a solution of an aromatic quinone-amine compound which is insoluble in water orthe monomers, contains a quinone group and an amine group capable of inhibiting the radical polymerization and contains a functional group having a chelate-forming ability for adhering the compound to the surfaces, and removing the solvent by drying. According to the process, the scale deposition in the polymerization of an acrylate or a methacrylate can be prevented.

Inventors

  • 👤 Toragoro Mitani
  • 👤 Hideo Yasui
  • 👤 Hisashi Morikawa

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 05:37
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 136 words
In a process for polymerizing an acrylate or a methacrylate monomer alone, a mixture thereof or a mixture of an acrylate or a methacrylate monomer as a main component and other copolymerizable monomers in the presence of water, an emulsifier and a polymerization initiator soluble in water or the monomers; the improvement which comprises carying out the polymerization in a polymerization vessel having a film on an inner surface thereof and on surfaces of attached instruments within the vessel, said film being formed by applying a solution of an aromatic quinone-amine compound which is insoluble in water or the monomers, contains a quinone group and an amine group capable of inhibiting the radical polymerization and contains a functional group having a chelate-forming ability for adhering the compound to the surfaces, and removing the solvent by drying.
Claim 2
Dependent Claim 136 words
In a process for polymerizing an acrylate or a methacrylate monomer alone, a mixture thereof or a mixture of an acrylate or a methacrylate monomer as a main component and other copolymerizable monomers in the presence of water, an emulsifier and a polymerization initiator soluble in water or the monomers; the improvement which comprises carying out the polymerization in a polymerization vessel having a film on an inner surface thereof and on surfaces of attached instruments within the vessel, said film being formed by applying a solution of an aromatic quinone-amine compound which is insoluble in water or the monomers, contains a quinone group and an amine group capable of inhibiting the radical polymerization and contains a functional group having a chelate-forming ability for adhering the compound to the surfaces, and removing the solvent by drying.
Claim 3
Dependent Claim 44 words
The process of Claim 1, wherein the functional group having a chelate-forming ability is a substituent of the aromatic ring having at least one member selected from the group consisting of oxygen atom, nitrogen atom, phosphorus atom, sulfur atom, amino group and carbonyl group.
Claim 4
Dependent Claim 14 words
The process of Claim 1, wherein the aromatic quinone-amine compound has a hydrophilic group.
Claim 5
Dependent Claim 27 words
The compound of Claim 3, wherein the hydrophilic group is at least one member selected from the group consisting of hydroxyl group, amino group and imino group.

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