申请人:INTERNATIONAL FLAVORS & FRAGRANCES INC.
公开号:EP0728804A1
公开(公告)日:1996-08-28
Described is a composition of matter particularly useful in fabricating toilet rim blocks consisting of:
(a) extruded polyvinyl alcohol or partially hydrolyzed polyvinyl acetate with the maximum mole ratio of acetyl moiety:hydroxyl moiety being about 3:1 having a number average molecular weight of from about 15,000 up to about 68,000 containing from 0 up to about 13% by weight of an added polar plasticizer;
(b) from about 1 up to about 20% by weight of a compatible fragrance contained within the polyvinyl alcohol or partially hydrolyzed polyvinyl acetate;
(c) from 0 up to about 20% by weight of a "foaming agent" which is a first surfactant and which can be a detergent, contained within the polyvinyl alcohol or partially hydrolyzed polyvinyl acetate;
(d) from 0 up to about 20% by weight of a hydrophobic silica contained within the polyvinyl alcohol or partially hydrolyzed polyvinyl acetate;
(e) from 0 up to about 20% by weight of at least one second surfactant in addition to the "foaming agent";
(f) from 0 up to about 5% by weight of a water-soluble dye; and
(g) from 0 up to about 4% by weight of a "foam booster".
Also described are processes for preparing such compositions of matter and such toilet rim blocks. When used for the fabrication of toilet rim blocks, the maximum mole ratio of acetyl moiety:hydroxyl moiety is about 1:3.
所描述的是一种特别适用于制造马桶圈块的物质组合物,由以下成分组成:
(a) 挤出的聚乙烯醇或部分水解的聚醋酸乙烯酯,乙酰基与羟基的最大摩尔比约为 3:1,其平均分子量约为 15,000 至 68,000 之间,含有 0 至 13%(按重量计)的添加极性增塑剂;
(b) 聚乙烯醇或部分水解的聚醋酸乙烯酯中含有约 1%至约 20%(按重量计)的相容香料;
(c) 0 至约 20%(按重量计)的 "发泡剂",它是第一种表面活性剂,也可以是 洗涤剂,包含在聚乙烯醇或部分水解的聚醋酸乙烯酯中;
(d) 聚乙烯醇或部分水解的聚醋酸乙烯酯中所含的疏水性二氧化硅的重量比为 0 至约 20%;
(e) 除 "发泡剂 "外,0 至约 20%(按重量计)的至少第二种表面活性剂;
(f) 0 至约 5%(按重量计)的水溶性染料;以及
(g) 0 至约 4%(按重量计)的 "泡沫促进剂"。
还描述了制备这种物质组合物和这种马桶圈块的工艺。当用于制造厕圈时,乙酰基分子与羟基分子的最大摩尔比约为 1:3。