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Cross polymers

Both of the types of polymer mentioned above can be modified by the incorporation of hydrophobic monomers onto the essentially hydrophilic acrylate backbone. The effect of this is to modify their characteristics by giving them so-called associative properties. These hydrophobes can interact or associate with other hydrophobes in the formulation (e.g., surfactants, oils, or hydrophobic particles) and thus build additional structures in the matrix [3-11]. These associative polymers are termed cross-polymers when they are based on carbomer-type chemistry [12] and hydrophobically modified alkali-soluble emulsions (HASEs) when based on ASE technology. [Pg.119]

The simplest system to consider is represented by a dispersion of the neutralized polymer in water. All show excellent clarity, but the carbomers (and the cross-polymers, not shown) are undoubtedly the most efficient in terms of their simple aqueous thickening properties, as indicated in Figure 5.4. The quantity of polymer required to achieve a given mid-shear rate viscosity is close to an order of magnitude less than that required for a crosslinked ASE thickener. The HASE polymers are generally found to have an efficiency between that of the ASE and the carbomer/cross-polymers. [Pg.119]

The shape of the aqueous rheology curve also varies with the nature of the polymer. Both the carbomers and the cross-polymers show fairly similar behavior. Crosslinked ASE polymers, as shown in Figure 5.4, show a profile close to that of the carbomers, giving highly shear-thinning properties, although this is to some extent dependent on molecular weight. A noncrosslinked ASE polymer shows a more Newtonian profile. The HASE polymers tend to show a behavior between that of a noncrosslinked ASE thickener and the carbomers or crosslinked ASE polymers. [Pg.119]

The above guidelines for the acrylic rheology modifiers are most useful in simple systems that are mainly water. However, in more complex matrices such as many finished formulations the situation can be very different. Both the carbomer and the cross-polymer type of rheology modifier are very sensitive to the presence of electrolytes, and this has a dramatic effect on the efficiency of the polymer, as well as on clarity. It is frequently found that in systems containing electrolytes, be they inorganic salts or anionic surfactants, the efficiency of a crosslinked ASE... [Pg.120]

Whereas in simple aqueous solutions the carbomers and the cross-polymers show a significandy better efficiency, Table 5.2 shows that in surfactant-based systems this no longer holds true. The use levels indicated in the table are the quantities of polymer required to obtain a given apparent Brookfield LV-60 viscosity of about 3000 mPa s, and in all the anionic surfactants the results are more equitable for the different classes of polymer compared with the situation in water. In the case of the nonionic surfactant, the difference is still maintained, however. [Pg.121]

Cross-polymers Poor Neutral to alkaline High Yes Powder... [Pg.141]

John s pH 5.5 Daily Exfoliating Body Wash (U.K., South Africa) Johnson Johnson Hydrogenated jojoba oil, sodium/styrene/acrylate copolymer, acrylates/C10-C30 alkylacrylate cross-polymer... [Pg.478]

The results on crossed polymer fibers obtained by Briscoe and Kremnitzer shown in Fig. 9.16 gave good agreement with Equation (9.16). The friction force increased more rapidly than Coulomb s law predicted at low loads but approached Coulomb s law at high loads. The value of the work of adhesion W from these friction experiments was near 0.1 Jm , close to the value determined in direct adhesion experiments on the same fibers. [Pg.195]

In the same line of recycling plastic waste without the aid of compatibilizers, the family of homogenization and sohd-state pulverization processes can be found (Daren 1998 DubmUe D Orhcel 1993 La Mantia et al. 1996 Khait et al. 1999 Khait et al. 2001) essentially based on the fractionation of plastic waste into fine particles and formation of cross-polymers induced by shear activated reactions that... [Pg.1893]

Adipic acid/diethylene glycol/glycerin cross polymer Lexorez 100... [Pg.2964]

M. Cross, Polymer rheology Influence of molecular weight and polydispersity , J.Appl. Polymer ScL, 13, 765 (1969). [Pg.1863]


See other pages where Cross polymers is mentioned: [Pg.188]    [Pg.1033]    [Pg.119]    [Pg.121]    [Pg.122]    [Pg.122]    [Pg.131]    [Pg.1706]    [Pg.33]    [Pg.658]    [Pg.207]    [Pg.897]    [Pg.899]    [Pg.900]    [Pg.1051]    [Pg.1055]    [Pg.477]    [Pg.562]   


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Cross-linked polymer networks insolubility

Cross-linked polymer removal

Cross-linked polymer supports

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Cross-linked polymer swelling

Cross-linked polymer, defined

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Cross-linked polymers

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Cross-linked polymers chain entanglement

Cross-linked polymers crystallite networks

Cross-linked polymers electromagnetic susceptibility

Cross-linked polymers equilibrium melting temperature

Cross-linked polymers fibrous proteins

Cross-linked polymers hydrogen bonding

Cross-linked polymers ionically

Cross-linked polymers isomers

Cross-linked polymers microenvironment polarity

Cross-linked polymers nanostructure materials

Cross-linked polymers polarity

Cross-linked polymers secondary relaxation

Cross-linked polymers steric hindrance

Cross-linked polymers temperature

Cross-linked polymers thermal analysis

Cross-linked polymers unsaturation

Cross-linked polymers vulcanized polyisoprene

Cross-linked polymers weighting coefficient

Cross-linked polymers, definition

Cross-linked polymers, effects

Cross-linked polymers, effects yield

Cross-linked polymers, susceptibility

Cross-linked polymers, susceptibility operators

Cross-linked polymers—network LC elastomers

Cross-linked type polymer

Cross-linked, network-type polymers

Cross-linking Reactions of Polymers

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Cross-linking dendritic polymers

Cross-linking macromolecular polymers

Cross-linking monomers polymer properties affected

Cross-linking network structure, polymers from

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Cross-linking of polymers

Cross-linking of pre-formed polymer

Cross-linking plasma polymers

Cross-linking polymer-modified electrodes

Cross-linking polymers main

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Cross-links solid state polymer reactions

Cross-links, in polymers

Cross-polarization experiment polymer blends

Cross-relaxation polymer motion

Cross-section (per unit volume) of homogeneous polymers in solution

Densely cross-linked, glassy polymers

Double mixing cross-linking polymer

Dynamic Cross-Metathesis in Unsaturated Polymers

Functionalized cross-linked polymers

Fusion of cross-linked polymers

Glass transition cross-linked polymers

Glassy Polymers and the Role of Cross-links

Glycolic acid polymers cross-linking

Graft polymers cross-linking initiators

HIGHLY CROSS-LINKED POLYMERS

High-temperature polymers cross-linked organic

Hydration of Cross-Linked Polymers (e.g., Polystyrene Sulfonate)

Interfacial Thermal Properties of Cross-Linked Polymer-CNT Nanocomposites

Investigation of Cross-Linked Polymer Systems by PL

Irradiation cross-linked linear polymers

Kinetic cross-linked polymers

Linear polymers, cross-linking

Linear polymers, cross-linking extent

Mediation in Cross-Linked Redox Polymers

Melamine-formaldehyde polymers cross-linking

Methacrylate polymers, cross-linking

Molecularly imprinted polymers cross-reactivity

Nanofragment cross-linked polymers

Of cross-linked polymers

Optimal cross-linked polymer matrix

Phenol-formaldehyde polymers cross-linking

Photo-Cross-Linking of Polymers

Photochemical cross-linking polymers

Physically cross-linked polymers

Physically cross-linked polymers block copolymers

Physically cross-linked polymers composites

Physically cross-linked polymers thermoplastic polyurethanes

Polybutadiene- cross-linked polymer

Polyesters cross-links, condensation polymer

Polymer , cross-linking classes

Polymer backbone, cross-linking

Polymer chain cross-sectional area

Polymer chains cross linking

Polymer cross-flow

Polymer cross-link

Polymer cross-linked density

Polymer cross-linking

Polymer cross-linking antioxidants effect

Polymer cross-linking conformational

Polymer cross-linking density

Polymer cross-linking negative resists

Polymer cross-linking process

Polymer cross-linking radiation chemistry

Polymer cross-linking thermal stability

Polymer cross-linking triallyl cyanurate

Polymer cross-linking, hydrogen-bonded

Polymer electrolyte membrane covalent cross-linking

Polymer electrolyte membrane cross-linking

Polymer electrolytes cross-linked polymers

Polymer microenvironment cross-linked polymers

Polymer processing cross-link promoters

Polymer ultrathin cross-linked

Polymer-bound catalysts cross-coupling reaction

Polymer-solid cross-structure

Polymer-solid cross-structure factor

Polymers Large molecules cross-linking

Polymers cross-fractionation

Polymers cross-linked structure

Polymers cross-linking agents

Polymers cross-linking effects

Polymers degradation cross linking

Polymers photo-cross-linking

Pyrazoline cross-linked polymers

Pyridine containing polymers cross-linked

Rubber elasticity cross-linked polymer network

Rubbery polymers cross-linking

Simultaneous cross-linking and main-chain cleavage of linear polymers

Solvent swelling cross-linked polymer

Star-shaped polymers, cross-linking

Suzuki cross-coupling reactions polymers

Synthetic polymer gels cross-linking agent

Synthetic polymers cross-linked

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The effects of polymer in real-field cross-sections

UV cross-linking of thiolene polymers

Urea-formaldehyde polymers cross-linking

Water-soluble polymers cross-linked

Ways in which Synthetic Polymers Cross Compartmental Barriers

Wittig reactions polymer cross-linking

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