ANION EXCHANGE STATIONARY PHASES BASED ON A POLYALKYLPOLYAMINE POLYMER LAYER
申请人:DIONEX CORPORATION
公开号:US20200031857A1
公开(公告)日:2020-01-30
An anion exchange for separating a plurality of carbohydrates includes a negatively charged substrate particle. A base polymer layer includes a first plurality of quaternary amines. The polyalkylpolyamine polymer layer is covalently attached to the base condensation polymer layer. The polyalkylpolyamine polymer layer includes a polymeric branch structure that includes a second plurality of quaternary amines. A density of the second plurality of quaternary amines increases in a direction away from the base condensation polymer layer. The anion exchange stationary phase does not have a hydroxy group spaced apart from any one of the first or the second plurality of quaternary amines by an ethyl group.
Detergent compositions and more specifically, to low pH detergent compositions comprising sulfated surfactants, organic acid, and polyamine compounds. Methods of making and using the same.
LOW SOLVENT LIQUID DETERGENT COMPOSITIONS
申请人:The Procter & Gamble Company
公开号:US20160369206A1
公开(公告)日:2016-12-22
Liquid detergent composition which comprises an effective cleaning amount of surfactant, while still being pleasingly free-flowing, and which does not require high levels of organic, non-aminofunctional solvents in order to control the viscosity, can be formulated using a zwitterion, especially a zwitterionic polyamine.
MULTIFUNCTIONALIZED POLYETHYLENE GLYCOL DERIVATIVE AND PREPARATION METHOD THEREFOR
申请人:XIAMEN SINOPEG BIOTECH CO., LTD.
公开号:US20170312363A1
公开(公告)日:2017-11-02
Disclosed are a multifunctionalized polyethylene glycol derivative and a preparation method therefor. The derivative has an H-shaped structure as represented by formula (1) and comprises one linear core LPEG and four PEG branch chains, where n
1
, n
2
, n
3
, and n
4
respectively are the degrees of polymerization of the branch chains, U
1
and U
2
are trivalent branching groups connecting the core LPEG to two of the PEG branch chains, F
1
and F
2
contain a functional group or a protected form R
01
thereof and may or may not contain a branched group G, correspondingly, the number of R
01
is one or more, F
1
and F
2
are either identical or different, any one linking group in the molecule or any linking group formed with an adjacent heteroatom group can either remain stable or be degraded, and any one PEG segment in the molecule is discretely polydispersed or monodispersed. The multifunctional polyethylene glycol is flexible and diverse in terms of branch structures and the lengths of branching arms, has various parameters and performance indicators that are adjustable and easy to control, and has a broad applicability.