H 2 O 2 -Na 2 WO 4体系在相转移催化下通过不饱和(甲基)丙烯酸酯的选择性环氧化合成环氧(甲基)丙烯酸酯。
摘要:
研究了各种经典的环氧化剂对不饱和(甲基)丙烯酸酯的选择性环氧化。结果表明,在相转移催化下,通过使用H 2 O 2(20%)-Na 2 WO 4体系可以得到高选择性和高收率。在这些条件下,严格控制温度和初始pH值可防止在这些选择性环氧化过程中发生聚合。结果表明,环氧化的选择性取决于两个双键亲核性的差异。
METAL ADHESIVE COMPOSITION AND METHOD OF BONDING ARTICLES THEREWITH
申请人:KANEBO LTD.
公开号:EP0818519A1
公开(公告)日:1998-01-14
An adhesive composition for metals including an unsaturated thiirane compound having at least one thiirane group bonded with a saturated carbon atom and having at least one olefin-type double bond is provided. The composition is useful for adhesion of noble metals or noble metal alloys.
METAL ADHESIVE COMPOSITIONS AND METHOD OF BONDING ARTICLES THEREWITH
申请人:——
公开号:US20020016429A1
公开(公告)日:2002-02-07
An adhesive composition for metals including an unsaturated thiirane compound having at least one thiirane group bonded with a saturated carbon atom and having at least one olefin-type double bond is provided. The composition is useful for adhesion of noble metals or noble metal alloys.
CROSS-LINKED BLOCK COPOLYMERS COMPRISING REPEATING UNITS DERIVED FROM MONOMERS COMPRISING LACTAM AND ACRYLOYL MOIETIES, COMPOSITIONS, AND APPLICATIONS THEREOF
申请人:ISP INVESTMENTS LLC
公开号:US20190382519A1
公开(公告)日:2019-12-19
This application provides cross-linked block copolymers comprising at least one block comprising repeating units derived from monomers comprising lactam and acryloyl moieties. The application further provides compositions comprising the block copolymers and applications thereof in various industrial areas including personal care. The application furthermore provides Pickering emulsion compositions comprising the block copolymers.
US6388034B2
申请人:——
公开号:US6388034B2
公开(公告)日:2002-05-14
[EN] A HAIR CARE COMPOSITION, PROCESS FOR PREPARING THE SAME AND METHOD OF USE THEREOF<br/>[FR] COMPOSITION DE SOIN CAPILLAIRE, SON PROCÉDÉ DE PRÉPARATION ET SON PROCÉDÉ D'UTILISATION
申请人:ISP INVESTMENTS LLC
公开号:WO2018017408A1
公开(公告)日:2018-01-25
A hair care composition, and more particularly, a hair straightening or hair styling composition comprising (A) at least one α or β - hydroxy ketone, (B) a first polymeric compound selected from: (i) at least one hybrid graft polymer derived from (a) a functionalized or unfunctionalized cellulose moiety and (b) at least one functionalized or unfunctionalized acryloyl moiety; or (ii) at least one hybrid graft polymer derived from (a) a functionalized or unfunctionalized galactomannan moiety and (b) at least one functionalized or unfunctionalized acryloyl moiety; (C) at least one organic or inorganic base; (D) optionally, at least one functional polymer; and (E) at least one carrier is provided. Further, disclosed is a process for preparing the hair straightening or hair styling composition and method of hair straightening or hair styling.