| abstract |
The invention relates to a method for the production of (meth)acrylic acid, wherein initially raw (meth)acrylic acid is producedand said raw (meth)acrylic acid is subsequently purified in a continuous manner, wherein the preferably continuous purification of the raw (meth)acrylic acid comprises the following steps:a) impurities in a composition containing (meth)acrylic acid and impurities are precipitated in a crystalline form from said composition; b) the crystalline impurities precipitated from the composition are separated. The invention also relates to the (meth) acrylic acid obtained by said method, a device for the production of (meth) acrylic acid, a device for the production of (meth) acrylic acid, the use of said device or a purification device in the production of (meth) acrylic acid, (meth)acrylic acid, water-absorbing polymers, the use of water-absorbing polymers and fibers, films, foams and composites. |