Title:
PROCESSING AID FOR FOAM MOLDING AND VINYL CHLORIDE RESIN COMPOSITION CONTAINING THE SAME
Document Type and Number:
WIPO Patent Application WO/1999/043741
Kind Code:
A1
Abstract:
A processing aid for foam molding which is a powdery copolymer obtained from 50 to 80 wt.% methyl methacrylate, 20 to 50 wt.% alkyl methacrylate in which the alkyl has 3 to 5 carbon atoms, and 0 to 20 wt.% other copolymerizable monomer(s) and having a reduced viscosity $g(h)¿sp?/c of 4 to 8. This processing aid enables a vinyl chloride resin to be efficiently kneaded and heightens the strength of the melt. Thus, fine and uniform cells are formed and a high expansion ratio and an excellent molding appearance are attainable.
Inventors:
MIGITA NAHO (JP)
NAKATA AKIRA (JP)
WAKABAYASHI SHIGEO (JP)
TAKEI SEIJI (JP)
NAKATA AKIRA (JP)
WAKABAYASHI SHIGEO (JP)
TAKEI SEIJI (JP)
Application Number:
PCT/JP1999/000810
Publication Date:
September 02, 1999
Filing Date:
February 23, 1999
Export Citation:
Assignee:
MITSUBISHI RAYON CO (JP)
MIGITA NAHO (JP)
NAKATA AKIRA (JP)
WAKABAYASHI SHIGEO (JP)
TAKEI SEIJI (JP)
MIGITA NAHO (JP)
NAKATA AKIRA (JP)
WAKABAYASHI SHIGEO (JP)
TAKEI SEIJI (JP)
International Classes:
C08F220/14; C08J9/00; C08J9/10; C08L27/06; C08L33/10; C08L33/12; (IPC1-7): C08J9/00; C08L27/06
Foreign References:
| JPH08169914A | 1996-07-02 | |||
| JPH06192457A | 1994-07-12 | |||
| JPS5730735A | 1982-02-19 |
Other References:
See also references of EP 1097963A4
Attorney, Agent or Firm:
Wakabayashi, Tadashi (Akasaka 1-chome Minato-ku Tokyo, JP)
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