Pigments polymer coated

Pigmented polymer coatings on steel and PTFE as well as PTFE-based copolymers can be analyzed by rf-GD-MS in order to fingerprint them [648]. Advantages compared with SIMS and x-ray photoelectron spectroscopy are that the method is fast and does not require dissolution of the sample, and thermal volatilization processes do not appear to take place. 

Aluminum pigments, polymer coated (PCA-type) PVC, powder coating, thermoplastic resins, thermosetting resins Improved chemical resistance and outdoor durabihty better resin compatibility... 

Improvements in process and quality control made significant contributions to the transition from iron to steel as the major ferrous construction material over a century and a half ago. For most of that time red lead was relied upon, and not without a remarkable degree of success, as the rust-inhibitive pigment in anti-corrosive paints. In the last twenty years, however, there has been a similar dramatic change from such simple paints as red lead to synthetic polymer coatings which have as complex a technology as steel manufacture itself. 

Baudoin etal. [168,169] first presented qualitative depth profiles of lacquer and polymer coatings by means of r.f. GD-OES. Quantitative depth profiles were successively obtained by Payling et al. [170] on prepainted metal coated steel. Samples comprised a (rutile) pigmented silicone-modified polyester topcoat over a polymer primer, on top of an aluminium-zinc-silicon alloy coated steel substrate. With GD-OES in r.f. mode, it was possible to determine the depth profile through the polymer topcoat, polymer primer coat, metal alloy coating, and alloy layer binding to the steel substrate with a total depth of 50 im, all in about 60 min on the one sample. GD-OES depth profiles of unexposed and weathered silicone-modified polyesters were also reported [171]. Radiofrequency GD-OES has further been used to... 

The most Important measures of appearance are gloss and distinctness of image. In pigmented coatings gloss decreases on exposure as the polymer coating erodes away and exposes pigment particles. 

Even in polymer chemistry these species may be of interest since more and more attention is devoted to polymerization in confined volumes, such as micelles, whereby the graft copolymer could first help in the emulsion polymerization of a monomer compatible with the backbone and subsequently act as a surface modifier of the polymer formed (wetting agent, pigment binder, coating binder, antistatic compound, adhesion factor, etc.). 

Pigments, Paints, Polymer Coatings, Lacquers, and Printing Inks... 

Generation layers have recently been prepared from aqueous dispersions. Hoshino et al. (1991) described the cathodic deposition of various phthalo-cyanines and perylenes from aqueous dispersions containing poly(oxyethylene dodecyl ether) and LiBr. The pigment-polymer aggregate was plated onto an Al cathode. The layer was then coated with a transport layer using conventional solvent coating techniques. Hiruta et al. (1991) described a related technique as thermoinduced deposition. Aqueous phthalocyanine dispersions, as described above, were found to adsorb on an Al substrate at 90 C. 

For use in plastics the pigment is coated with a dense layer of silica (Figure 3.13) and other components to increase the stability in certain polymers, like polyamide,... 

Other metallic pigments are coated with inorganic (mostly siUca) or organic (polymer) materials to improve their chemical and thermal stabiUty in waterborne coatings, powder coatings, masterbatches, non-conductive coatings etc. 

Okhamafe, A.O. York, P. The glass transition in some pigmented polymer systems used for tablet coating. J. Macromol. Sci. Phys. 1984-1985, B23 (4-6), 373-382. 

An almost identical method called the SCAMP process was developed by Ferro in a series of patents (169-171) this process is claimed to produce powder coatings, new polymers, pigments, polymer additives, and temperature-sensitive biomaterials. 

Inorganic Cl are commonly used as a functional component of inhibited polymer coatings (see Chap. 3), and less often as inhibited films (sodium nitrate, protecting metal pigments, sodium-borosilicate layers of films). 

Impact resistance of epoxy coatings, as determined by a reverse Gardner impact test, is enhanced by liquid polymer addition independent of functional type. Again, these results are consistent with both unpigmented and pigmented model coatings. Although... 

A. Al-Turaif, P. Lepoutre, Effect of sintering on surface chemistry and surface energy of pigmented latex coatings, J. Appl. Polym. Sci. 82 (2001) 968-975. 

MANUFACTURING FEASIBILITY OF PIGMENTED COLOR COATS BASED ON LOW VISCOSITY OLEFINIC POLYMERS... 

The TPO part is power washed and the olefinic color coat is applied on the untreated, non-polar TPO surface. The ability of the Kraton Liquid Polymer to be formulated into a production color coat is a recent development and the adhesion mechanism is believed to be based on diffusion of very similar materials into each other with the aid of heat and solvents during the paint bake cycle. There may be other adhesion mechanisms occurring simultaneously. QC method TPO surface 1/visual, on-line identifies the color of the pigmented color coat ranging in thickness between 0.9-1.2 mils Painted part 1/ cross-hatch adhesion, 2/ other tests. 

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