Non-polymeric

Non-polymeric plastics whose resinous behaviour stems from the colloidal complexity of a mixture of heterogeneous molecules. 

Oriented ultrathin overgrowth of a polymer on a non-polymeric substrate is the latest combination of materials to show epitaxy. The most recent, remarkable form of this phenomenon is the formation of an array of parallel polymer chains on a substrate by depositing monomers and then polymerising them in situ. The Japanese discoverer of this phenomenon (Sano 1996) has called it polymerisation-induced... 

Section 3.2 is an introduction to general nucleation behaviour as first used for low molecular weight materials, that is, non-polymeric substances. This topic is frequently not covered in polymer papers but the extensive work done in this area provides the framework for the theory, and indicates the limitations and problems to be expected in predicting the physical behaviour. 

Non-Polymeric N-Heterocyclic Pigments (Other than Tetrapyrroles... 

NON-POLYMERIC N-HETEROCYCLIC PIGMENTS (OTHERTHAN TETRAPYRROLES AND BETALAINS)... 

Several non-polymeric N-heterocyclic pigments other than betalains will be briefly presented in this chapter, even if they do not belong to a unique class of chemical compounds. 

Figure 2.5.2 illustrates the chemical structures of some N-heterocyclic non-polymeric pigments. 

Fig. 5 Scatterplot derived from the CSD reporting the N- I-C angle (deg) vs. the N- I distance (A) for crystal structures containing intermolecular N- I contacts only error-free and non-polymeric structures containing single-bonded iodine atoms and showing no disorder with R < 0.06 are considered. The scatterplot clearly demonstrates the high directionality of the N- I XB...

Thermotropic liquid crystals may be classified as either low molar mass (i.e. non-polymeric), or high molar mass (i.e. polymeric) and within each of these broad classifications, there are several sub-classifications. 

Polyphosphazene-Phthalocyanlne Structures. Thus, a related study was carried out with copper phthalocyanine units linked covalently to a poly(aryloxyphosphazene) (44). Non-polymeric copper phthalocyanine forms ordered stacked structures in the crystalline state. When... 

We use extrusion coating to apply thin layers of polymer to the surface of non-polymeric substrates such as cardboard or aluminum foil. Extrusion coated materials are extensively used in food packaging. Products include the coated cardboard used to make milk cartons and the coated aluminum foil used to seal dairy product tubs. The process of extrusion coating has much in common with film casting. 

The parameters K1/ K2/ and K3 are defined by the refractive indices of the crystal and sample and by the incidence angle [32]. If the sample has uniaxial symmetry, only two polarized spectra are necessary to characterize the orientation. If the optical axis is along the plane of the sample, such as for stretched polymer films, only the two s-polarized spectra are needed to determine kz and kx. These are then used to calculate a dichroic ratio or a P2) value with Equation (25) (replacing absorbance with absorption index). In contrast, a uniaxial sample with its optical axis perpendicular to the crystal surface requires the acquisition of spectra with both p- and s-polarizations, but the Z- and X-axes are now equivalent. This approach was used, through dichroic ratio measurements, to monitor the orientation of polymer chains at various depths during the drying of latex [33]. This type of symmetry is often encountered in non-polymeric samples, for instance, in ultrathin films of lipids or self-assembled monolayers. 

J Blochwitz, M Pfeiffer, M Hofman, and K Leo, Non-polymeric OLEDs with a doped amorphous hole transporting layer and operating voltages down to 3.2 V to achieve 100 cd/m2, Synth. Met., 127 169-173, 2002. 

G Gu, PE Burrows, S Venkatesh, and SR Forrest, Vacuum-deposited, non-polymeric flexible organic light-emitting devices, Opt. Lett., 22 172-174, 1997. 

G Gu, PE Burrows, and SR Forrest, Vacuum-Deposited, Non-Polymeric Flexible Organic Light Emitting Devices, U.S. Patent 5,844,363, December 1, 1998. 

Hereafter, the factors ruling the activity and selectivity of Pd(II)-phosphine catalysts for the carbonylation of ethene in MeOH are presented. In order to make the exposition clearer some of the concepts already discussed in other reviews will be shortly resumed. It will deal first with copolymerisation because it includes more general aspects, several of which are involved also in the catalysis to monocarbonylated non-polymeric products. The literature search covers all up to 2004. 

Cross-linked polymers bearing IV-sulfonyl amino acids as chiral ligands were converted to polymer bound oxazaborolidine catalysts by treatment with borane or bromoborane. In the cycloaddition of cyclopentadiene with methacrolein, these catalysts afforded the same enantioselectivities as their non-polymeric counterparts238. 

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