ASYMMETRIC ORGANIC PEROXIDE, CROSSLINKING AGENT COMPRISING THE SAME, AND METHOD OF CROSSLINKING WITH THE SAME
申请人:NOF CORPORATION
公开号:EP1233014A1
公开(公告)日:2002-08-21
A crosslinking agent comprising an asymmetry organic peroxide having at least one structure unit of (substituted)benzoylcarbonyloxy group represented by the following formula (1) in the molecule thereof.
Environmentally friendly crosslinking agents and crosslinked silicone rubber moldings are provided thereby.
Specifically, useful crosslinking agents and crosslinking processes for silicone rubber are provided.
The Dual Role of Benzophenone in Visible-Light/Nickel Photoredox-Catalyzed C−H Arylations: Hydrogen-Atom Transfer and Energy Transfer
作者:Abhishek Dewanji、Patricia E. Krach、Magnus Rueping
DOI:10.1002/anie.201901327
日期:2019.3.11
A dual catalytic protocol for the direct arylation of non‐activated C(sp3)−H bonds has been developed. Upon photochemical excitation, the excited triplet state of a diaryl ketone photosensitizer abstracts a hydrogen atom from an aliphatic C−H bond. This inherent reactivity was exploited for the generation of benzylic radicals which subsequently enter a nickel catalytic cycle, accomplishing the benzylic
Pd-catalyzed chemoselective threefold cross-coupling of triarylbismuths with benzylic bromides
作者:Maddali L. N. Rao、Ritesh J. Dhanorkar
DOI:10.1039/c3ra40413g
日期:——
for the chemoselective cross-coupling of functionalized benzylic bromides with triarylbismuthreagents. Under the established conditions, catalyzed by palladium in the presence of K3PO4 base in DMA at 90 °C for 1 h, the threefoldarylations using triarylbismuthreagents proceeded smoothly with electronically diverse benzylic bromides. All the coupling reactions furnished the corresponding functionalized
对于功能化的苄基溴化物与三芳基铋试剂的化学选择性交叉偶联,证明了一种有效的钯催化方案。在既定条件下,钯在DMA中在90°C下在DMA中存在K 3 PO 4碱的条件下催化1 h,使用三芳基铋试剂进行的三重芳基化反应可通过电子形式多样的苄基溴顺利进行。所有偶联反应均以高收率提供了相应的官能化二芳基甲烷。
Curable composition
申请人:——
公开号:US20030166756A1
公开(公告)日:2003-09-04
The invention relates to a curable composition comprising a crosslinking silyl-containing vinyl polymer. The curable composition of the invention can be utilized, for example, as sealants such as elastic sealants for building and construction, electric or electronic part materials such as solar battery backside sealants, electric insulating materials such as insulating sheath of wire or cable, pressure sensitive adhesives, adhesives, and paints.
A curable composition
which comprises the following two components:
(A) a vinyl polymer (I) having at least one crosslinking functional group and
(B) heavy or ground calcium carbonate (II) having a specific surface area of not smaller than 1.5 m
2
/g but not larger than 50 m
2
/g.
BIOFILM-INHIBITORY COATINGS THAT RELEASE SALICYCLIC ACID BY HYDROLISIS
申请人:Hortelano Edwin R.
公开号:US20110256187A1
公开(公告)日:2011-10-20
The present invention relates to coating compositions for modulating biofilm growth on a surface, the composition comprising the reaction product of:
A) an ethylenically unsaturated compound, having at least one group with the following structure:
and
B) an ethylenically unsaturated compound.