Breathable

Waterproof Finishes. Waterproofing results from coating a fabric and filling the pores with film-forming material such as varnish, mbber, nitroceUulose, wax, tar, or plastic. The materials may be appHed as hot melts, eg, waxes or some polymers, as solvent solutions, or as aqueous latexes. The continuity of the film provides the water resistance. Except for tents, tarpauHns, and covers, coated fabrics have been largely replaced by plastics, and by fabrics treated with water and oU repeUents that do not reduce permeabUity to air and water vapor. Eabrics are also commonly laminated to films, such that the total stmeture is waterproof (15), or in some cases water-resistant but breathable (16). 

They can be breathable with high moisture vapor transmission. 

At constant PBT/PTMO composition, when the molar mass of PTMO block is >2000, partial crystallization of the polyether phase leads to copolymer stiffening. The properties of polyesterether TPEs are not dramatically different when PTMO is replaced by polyethers such as poly(oxyethylene) (PEO) or poly(oxypropylene). PEO-based TPEs present higher hydrophilicity, which may be of interest for some applications such as waterproof breathable membranes but which also results in much lower hydrolysis resistance. Changing PBT into a more rigid polymer by using 2,6-naphthalene dicarboxylic acid instead of terephthalic acid results in compounds that exhibit excellent general properties but poorer low-temperature stiffening characteristics. 

Lower-density E-plastomers have found alternate use in cast film processes to make elastic film laminates with good breathability which contain laminates of liquid impermeable extensible polymeric films with extensible-thermoplastic-polymer-fiber nonwovens and nonwoven webs of polyethylene-elastomer fibers as the intermediate layers. The development relates to a breathable film including an E-plastomer and filler that contributes to pore formation after fabrication and distension of the film. The method and extent of distension is designed to produce a breathable film by stretching the film to form micropores by separation of the film of the E-plastomer from the particulate solids. This film is useful for manufacture of absorbent personal-care articles, such as disposable diapers and sanitary napkins and medical garments. In detail, these constructions comprise a liquid impermeable extensible film comprising polyolefins. The outer layer contains extensible-thermoplastic-polymer-fiber nonwovens, and an elastic intermediate layer contains nonwoven webs of fiber E-plastomers. The intermediate layer is bonded to the film layer and the outer... 

Wear underwear made of breathable materials, such as cotton... 

A few other successful 13C 1-NMR determinations should be mentioned. Hunt et al. [28] used 13C NMR to characterise fractions of extracted analytes of PAG and sorbitan ester samples and identified Irganox 1010. H and 13C NMR have been used to identify the main organic components of a breathable diaper back-sheet as LLDPE and pentaerythritol tetra-octyl ester (PETO) [233]. The equally present AOs Irganox 1010 and Irgafos 168 were not detected without extraction. Barendswaard et al. [234] have reported fully assigned 13C solution spectra of these two antioxidants. Chimas-sorb 944 in a polyamide matrix can be determined by H or 13C 1-NMR using solvents such as formic acid, trifluoroacetic acid or trifluoroethanol [235], Both H and 13C NMR have been used to follow the chemistry of a bis-phenoxidemethylaluminum complex (reaction product of BHT and trimethylaluminum) by exposure in air. Pierre and van Bree [216] also used 13C NMR to... 

Some of the key factors that lead us to select polyurethane foam for upholstery are its durability, resilience, and controllable hardness (or softness, depending on your point of view). Vibration dampening and shock absorbance are important attributes in automobile and public transportation seating. Open cell foams are preferred for these applications because they allow for air and moisture transport, which improve the comfort of passengers who may occupy a seat continuously for several hours. This inherent breathability is also a valuable attribute in mattresses. Shock absorbance plays a key role in selecting flexible polyurethane foams for the packaging of fragile items. 

Flammability or explosivity Corrosivity Toxicity Carcinogenicity or teratogenicity Breathability (noxious or poisonous fumes) Electrical (high voltage or current) Light (intense sources, such as lasers, UV lamps) Radioactivity/Radiation... 

Ciaccio, L. L., R. L. Rubino, and J. Flores. Composition of organic constituents in breathable airborne particulate matter near a highway. Environ. Sci. Technol. 8 935-942, 1974. 

Guidotti M, Giovinazzo R, Cedrone O, Vital M (1998) Investigation on the presence of aromatic hydrocarbons, persistent organochlorine compounds, phthalates and the breathable fraction of atmospheric particulate in the air of Rieti urban area. Ann Chim-Rome 88 419 27... 

Modern Plastics International 32, No. 10, Oct.2002, p.61 PROTECTIVE FOAM LINERS ARE NATURALLY BREATHABLE... 

Impact-resistant foam liners used in helmets and other protective gear are usually not breathable unless air passages are fabricated in them. Brock USA has developed a process for moulding closed-cell foam that permits three-dimensional air flow and moisture evaporation... 

Carbon dioxide is heavier than air, which results in it blanketing the floor within mine voids. This tendency needs to be taken into account in planning mine safety, as breathable air above a mantle of 02 deficient air can give a false sense of security where a sloping mine roadway is being travelled. Blankets of 02-deficient air can also hug the ground surface around abandoned mine shafts and adit portals, and this should be borne in mind when planning fieldwork in the vicinity of such features. 

During 1995, four sets of samples from two monitoring stations of the breathable fraction of atmospheric particulates including phthalates were measured in the air of Rieti urban area in Italy. The concentrations of di(2-ethylhexyl) phthalate ranged from... 

Polyetheresteramide antistatic agents consisting of the reaction product of unde-canoic acid, hexamethylenediamine, dodecanedioic, and ethylene glycol were prepared by Linemann et al. (5) and blended with thermoplastic resins to form breathable polymer compositions. 

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