公开(公告)号：DE2753254A1

公开(公告)日：1979-06-07

申请号：DE2753254

申请日：1977-11-30

Applicant: BASF AG

Inventor： HAARDT UDO ING GRAD ,  LEGGEWIE EIKE ING GRAD ,  GRAB GERHARD ING GRAD

IPC: C08J9/228 ,  C08J9/232 ,  B29D27/00

Abstract: Foamed articles are made as in the parent patent by heating and compressing crosslinked part-contg. olefin polymer particles foamed with light volatile organic blowing agents. The foamed particles used have wt./vol., measured in g/l, 10-500% higher than that of the initial foam particles. In this addn. the foam particles having a higher wt./vol. are produced by treating foam particles having a lower wt./vol. with steam at 80-130 degrees C, and cooling. In steaming, air is displaced from foam particles and replaced by steam. On cooling, steam condenses and the particles shrink with increase of bulk wt., e.e. from 10-20- to 20-100 g/l. The heavier foamed articles have increased strength after loading.

公开(公告)号：DE2721532A1

公开(公告)日：1978-11-09

申请号：DE2721532

申请日：1977-04-27

Applicant: BASF AG

Inventor： WIRTH HEINRICH DIPL CHEM DR ,  LEGGEWIE EIKE ING GRAD ,  HAARDT UDO ING GRAD

IPC: B05D1/26 ,  B05D7/02 ,  B29C44/00 ,  B32B5/18 ,  B29D9/00