Knifing fillers

CAS 59-50-7 EINECS/ELINCS 200-431-6 Uses Preservative, bactericide, fungicide, yeast inhibitor for concrete additives, metalworking fluids, textile auxs., thickener sol ns., adhesives (incl. protein-based formulations), glues, knifing fillers, aq. coatings, etc. Features Broad spectrum activity esp. effective against putrefactive bacteria rec. for prods, which are difficult to preserve Preventol CMK Pellets [Bayer AG]... 

Chem. Descrip. Unsat. paraffin wax polyester resin (65.5%) in styrene Uses Flexibilizer for wax-free polyesters, UV-curing styrene systems, and spray, roller, and knifing fillers, in photopolymerizing Roskydal systems, in clear coats, roller primers Features Highly flexible... 

Uses Binder for highly filled knifing fillers, esp. for use with stoving coating systems, overbaking-resist, fillers Features Med. reactivity cold curing, even 0 C yields highly flexible polymers... 

Knifing filler n. Filling composition suitable for application with a filling knife as distinct from one made for brush apphcation. 

Particulate filled EPDM mbber can be produced via conventional mixing procedures as described in [141]. Pure precipitated silica (Ultrasil VN3) and silica modified with a commerically available organosilane (Si 69), as well as carbon black (N 550) are employed as fillers.7 Unvulcanized samples for AFM observation are prepared by cutting small pieces of the compounds using a scalpel knife [(cryo)... 

In PVC coating formulation fillers play a role. Filler choice mostly depends on the way the filler affect viscosity. The filler should not absorb the plasticizers nor interfere with the pseudoplastic behavior of the paste which is determined by the resin properties and by the choice of plasticizers. Fillers must be completely dispersed, since the gaps between the coated substrate and the knife are very small. There must be no lumps. Fillers should not interfere with deaeration which is... 

Knifing, Spot and Spray Fillers for Metal and Marble (here also coatings). Knifing and spot fillers are especially suited for filling large areas of unevenness in just a few operations in quick succession. Knifing resins (hard to flexible) are mixed to a paste-like consistency with the extenders described. Benzoyl peroxide and tertiary aromatic amine are used as the hardener system (the latter is usually a component of the resin supply form). 

Chem. Descrip. Highly reactive unsat. polyester resin (69%) in styrene Uses Binder for highly filled primer surfaces, e.g., knifing and spray fillers for automotive refinishing Features Produces hard films... 

TEM (refer to Figure 1) is used whenever a more in-depth study (when domain sizes are less than 1 micron or so) is required on polymer phase morphologies such as dynamically vulcanized alloys and Nylon/EP filler location as in carbon black in rubber compounds and also in the morphology of block copolymers. Thin sections are required and take anywhere from one hour to one day per sample depending on the nature of the sample. They must be 100 nm in thickness and are prepared usually by microtoming with a diamond knife at near liquid nitrogen temperatures (-150° C). The same contrasting media for SEM apply to TEM. In addition, PIB backbone polymers scission and evaporate in the TEM which helps... 

For a low rate of knife advance the resistance of the filter aid decreases in spite of the decrease in cake thickness. This is explained by the fact that for a single rotation of the drum, the particles of the suspension penetrate into the pores of filter at depths greater than 1.5 mm, and blockage occurs. Rotary drum filler systems are characterized not only by rate, but by the ratio of filtrate volume to the weight of filter aid cut. Some generalizations for this system are ... 

Fig. 5.70 Sections of a mica filled thermoplastic are shown in the optical (A and B) and TEM (C) micrographs. The platy mineral filler particles are aligned with the polymer. The particulate texture of the mica (black) in the TEM cross section reflects the effects of diamond knife fracture of individual mica flakes.

Elastic Glazing Compounds. Based on blown soya or linseed oils, these materials are formulated with selected calcium carbonates and fibrous fillers plus small amounts of fatty acids for easy working properties (knifing) on large glazing installations. Most of these materials are used in industrial and commercial construction and maintenance. 

Oil based caulking compounds are supplied in knife and gun grades. Gun grades are viscous semiliquids whereas knife grades are more viscous and are similar to mortar in consistency. A simple linseed oil putty has a composition of 12 parts oil and 88 parts calcium carbonate filler. The sealants can be appUed at temperatures between 40 to 100°F (4 to 38°C). Below 40°F, the viscosity becomes too high for easy working, and above 100°F, the viscosity drops sufficiently for sagging to occur. 

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