Retention Indices and Sorption Enthalpies of Pentaerythritol and С2–С8 Acid Esters on Nonpolar Stationary Phases
摘要:
The retention and sorption enthalpy characteristics of 38 pentaerythritol esters of C-2-C(8)carboxylic acids of different structures were determined by gas-liquid chromatography on a nonpolar phase in the temperature range 433.2-563.2 K. The molecular structure was shown to affect the temperature dependence of the retention indices of the esters. The average change in the sorption enthalpy of pentaerythritol tetraesters per CH(2)group is lower in magnitude than the similar contribution for normal alkanes. The excess mixing enthalpy at 298.2 K was evaluated for four fully substituted pentaerythritol esters.
Composition and method for preventing or reducing engine knock and pre-ignition in high compression spark ignition engines
申请人:ExxonMobil Research and Engineering Company
公开号:US10119090B2
公开(公告)日:2018-11-06
A method for preventing or reducing engine knock or pre-ignition in a high compression spark ignition engine lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition that contains (i) a lubricating oil base stock comprising at least one ester including at least one group selected from the group consisting of Formula (1), Formula (2), and Formula (3):
The lubricating oils of this disclosure are useful as passenger vehicle engine oil (PVEO) products.
Multibrached Polymer and Method for Producing the Same
申请人:Niitani Takeshi
公开号:US20080214685A1
公开(公告)日:2008-09-04
The present invention provides a multibranched polymer represented by the following formula (I), and a method for producing the multibranched polymer:
wherein A represents an organic group having 3 or more branched chains, X
a
represents a linking group containing any atom of Groups 14 to 16 in the Periodic Table, Y represents a functional group having a structure capable of having an active halogen atom, Q represents an arm moiety having a repeating unit derived from a polymerizable unsaturated bond, m
1
represents any integer of 1 to the number of branched chains of A, m
2
represents the number of branched chains of A, n
1
represents an integer of 0 or 1 or more, and R
a
represents an organic group which is not associated with the polymerization reaction.
Multibranched polymer and method for producing the same
申请人:Niitani Takeshi
公开号:US20110152388A1
公开(公告)日:2011-06-23
A multibranched polymer represented by the following formula (I), and a method for producing the multibranched polymer:
where A represents an organic group having 3 or more branched chains, X
a
represents a linking group containing any atom of Groups 14 to 16 in the Periodic Table, Y represents a functional group having a structure capable of having an active halogen atom, Q represents an arm moiety having a repeating unit derived from a polymerizable unsaturated bond, m
1
represents any integer of 1 to the number of branched chains of A, m
2
represents the number of branched chains of A, n
1
represents an integer of 0 or 1 or more, and R
a
represents an organic group that is not associated with the polymerization reaction.
HIGHLY FUNCTIONALIZED RESIN BLENDS
申请人:HENKEL US IP LLC
公开号:US20140221573A1
公开(公告)日:2014-08-07
The present invention relates to multi-functional polymeric resin blends which have a defined average molecular weight distribution. Additionally each polymeric component of the blend has a polydispersity of from about 1.01 to about 2.50, The average functionality of the blend is from about 1.8 to about 4.0. More particularly, the present invention relates to poly(meth)acrylates having three or more functional groups. These highly functionalized resin blends are desirably prepared using controlled free radical polymerization techniques, such as single electron transfer living radical polymerization (SET-LRP) processes to produce a variety of blended resin systems which have tailored and enhanced properties.
INKJET INK COMPOSITION AND INKJET RECORDING METHOD
申请人:FUJIFILM CORPORATION
公开号:US20140204149A1
公开(公告)日:2014-07-24
To provide an inkjet ink composition that has excellent discharge stability and gives an ink image film having excellent substrate adhesion and film hardness, and an inkjet recording method employing the inkjet ink composition.
An inkjet ink composition comprises (Component A) a dendritic polymer compound having a weight-average molecular weight of 3,000 to 100,000 and having a constituent repeating unit represented by Formula (I); (Component B) a polymerization initiator; and (Component C) a radically polymerizable compound.
(In Formula (I), R
1
and R
2
independently denote a hydrogen atom or an alkyl group having 1 to 6 carbons, R
3
denotes an alkyl group having 1 to 12 carbons, and R
2
and R
3
may be bonded to form a ring structure.)