Abstract: Disclosed is a buttock support for at least partial load-relief of the body weight of a person, the buttock support having two support regions adapted to receive at least part of a buttock region of the person. Also disclosed is a load-relief system having the aforementioned buttock support. The two support regions are separated from one another by a gap and are rounded. The gap separates the two support regions from one another centrally. The buttock support significantly simplifies the connection of a person to the aforementioned load-relief system to prepare for manual and/or automated physical therapy and also ensures that the thigh region, in particular the inner face of the thigh, and the groin region are accessible for further medical/therapeutic treatment by the medical staff.

Abstract: The invention relates the preparation of (meth)acrylic acid comprising the steps: i) bringing a composition Z1 comprising (meth)acrylic acid and aldehydes into contact with an aldehyde-trapping agent to give a composition Z2 comprising (meth)acrylic acid, the high-boiling reaction product of the aldehyde, and the aldehyde-trapping agent, and unreacted aldehyde-trapping agent; ii) separating off (meth)acrylic acid from the composition Z2 by means of distillation, whereby a composition Z3 comprising the high-boiling reaction product from the reaction between the aldehyde and the aldehyde-trapping agent and unreacted aldehyde-trapping agent is being obtained as the bottom product; iii) extracting the unreacted aldehyde-trapping agent from the composition Z3 by water, a first, aqueous phase P1 and a second, organic phase P2 being obtained; iv) separating off of the first, aqueous phase P1 from the second, organic phase P2.