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Machine translation
1. (WO1981002018) METHOD FOR THE PREPARATION OF TRANSPARENT AND POROUS PLASTIC MATERIALS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/002018    International Application No.:    PCT/DE1981/000012
Publication Date: 23.07.1981 International Filing Date: 14.01.1981
IPC:
C08J 9/236 (2006.01), C08J 9/32 (2006.01), E04C 2/54 (2006.01)
Applicants:
Inventors:
Priority Data:
3001205 15.01.1980 DE
Title (EN) METHOD FOR THE PREPARATION OF TRANSPARENT AND POROUS PLASTIC MATERIALS
(FR) PROCEDE DE PREPARATION DE MATIERES PLASTIQUES POREUSES ET TRANSPARENTES
Abstract: front page image
(EN)Method for the preparation of transparent and porous plastic materials, particularly based on acrylate and methacrylate; the materials obtained may have the shape of plates, for example, shaped parts or also polylaminate body cores. The method consists in mixing first massive beads of transparent polymer, provided with a swelling agent with a reacting resin; softening then the mixture by heating or swelling in order to obtain a material having relatively big pores. Then, the beads may be interposed. At that time, the reaction resin is cured. The material thus obtained presents, in its mass, relatively big closed cellular pores, limited by each other; when the material is made in the form of plates, their surfaces are smooth and free of pores. Such plates may be used advantageaously as construction and heat isulating materials, allowing a good passage of light in the construction of green houses.
(FR)Un procede de preparation de matieres plastiques poreuses et transparentes, en particulier a base d"acrylate et de methacrylate; les matieres obtenues peuvent se presenter sous forme de plaques par exemple de pieces faconnees ou egalement de noyaux de corps polystratifies. Le procede consiste a melanger d"abord des perles massives en polymere transparent, pourvues d"argent gonflant, a une resine reactive; d"amollir ensuite le melange par echauffement ou gonflement en vue d"obtenir un materiau presentant des pores relativement grands. Alors les perles peuvent s"intercaler. A ce moment on polymerise la resine reactive. Le materiau ainsi obtenu presente en sa masse des pores cellulaires fermes, relativement grands, se limitant les uns aux autres; lorsqu"il est faconne en plaques, leurs surfaces sont lisses et sans pores. De telles plaques s"utilisent avantageusement comme materiau de construction et de thermo-isolation, permettant un bon passage de la lumiere dans le domaine de la construction de serres.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)