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Title:
CROSSLINKED PVC PRODUCT AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH04306242
Kind Code:
A
Abstract:

PURPOSE: To provide a crosslinked PVC article capable of preventing leakage of plasticizers, etc., providing controlled release of substances such as pesticides and having such a gradient crosslinking density as to have a high crosslinking density on the outer surface and a low or none crosslinking density at the bulk of the product.

CONSTITUTION: A PVC product is immersed at a temperature of 60-90°C in an aqueous solution of a crosslinking substance (e.g. sodium diethyldithiocarbamate) being a dithiocarbamate of formula I (wherein R2 is an alkyl optionally substituted with hydroxyl or an acyloxy or the like; and R2 is H or R1; or the like) or a difunctional or trifunctional thiol compound of formula II or III (wherein R is an alkyl, an aryl or the like) and a phase transfer catalyst being a quat. ammonium salt or a tert. alkylphosphonium salt (e.g. tetrabutylammonium chloride).


Inventors:
GIDEON REBIN
Application Number:
JP31301191A
Publication Date:
October 29, 1992
Filing Date:
September 19, 1991
Export Citation:
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Assignee:
YEDA RES & DEV
International Classes:
A01N25/10; A61K47/32; C08F8/34; C08F14/00; C08F14/06; C08J3/24; C08F8/00; C08J7/00; C08J7/12; C08K5/39; C08L27/06; (IPC1-7): C08F8/00; C08F14/06; C08J3/24; C08J7/00; C08J7/12; C08L27/06



 
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