会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 49. 发明专利
    • DETERGENT COMPOSITIONS
    • GB1342360A
    • 1974-01-03
    • GB1342360D
    • 1970-12-04
    • UNILEVER LTD
    • C11D3/00C11D3/16C11D3/20C07C59/12C11D1/02C11D1/66C11D1/84
    • 1342360 Hexadecylsuccinic acid salts UNILEVER Ltd 1 Dec 1971 [4 Dec 1970] 57647/70 Addition to 1293753 Heading C2C [Also in Division C5] Disodium 5,6-dichloro hexadecylsuccinate is prepared by treating hexadecenyl succinic anhydride with chlorine and then with sodium hydroxide. Disodium 5,6-dihydroxy hexadecylsuccinate is prepared by treating hexadecenylsuccinic acid with formic acid and hydrogen peroxide followed by treatment with sodium hydroxide, acidification and further treatment with sodium hydroxide. Mixed 5- and 6-hydroxy disodium hexadecyl succinates are prepared by treating hexadecenyl succinic anhydride with cone. H 2 SO 4 and then with sodium hydroxide. Mixed disodium epoxy hexadecylsuccinates are prepared by treating hexadecenyl succinic anhydride with m-chloroperbenzoic acid, followed by sodium bisulphite and sodium carbonate. Disodium bromo-hydroxy hexadecyl succinate mixed with the dibromo compound is prepared by treating hexadecenyl succinic anhydride with bromine, followed by sodium hydroxide. Disodium hydroxyhexadecyl malonate is prepared by treating diethyl malonate with sodium and hexadecane 1,2-epoxide, followed by sodium hydroxide. Disodium nitro hexadecyl succinates (mixed 5-nitro and 6-nitro compounds) are prepared by treating hexadecenyl succinic anhydride with aqueous nitric acid and sodium nitrite and neutralizing with sodium hydroxide.