This invention relates to a low heat release, low density, fiber-reinforced composite comprising a matrix comprising a thermoplastic polymer selected from the group consisting of polyarylsulfone, polyethersulfone, polyetheretherketone, polyetherketoneketone, a copolycarbonate of 4,4'-thiodiphenol and at least one member of the group consisting of bisphenol A, 9,9-bis(4-hydroxyphenyl)fluorene, and 1,1-bis(4-hydroxyphenyl)-1-phenyl ethane, a copolycarbonate of bisphenol A and 9,9-bis(4-hydroxyphen...

A glass fiber mat having improved strength and fiber wettability is provided by incorporation of a critical amount of between 1% and 6% by weight (solids) of a carboxylated styrene-butadiene latex having a pH between about 5 and about 8.5, a glass transition temperature (Tg) less than 25.degree. C. and a surface tension less than 50 dynes/cm, and 94% and 99% by weight (solids) of a urea-formaldehyde resin solution having a pH of from about 6.5 to about 8.5.

The invention relates to a heat insulation product of mineral fiber wool. The curable binding agent of the product is an aqueous suspension containing water glass and slag. The slag reacts hydraulically with the alkalis or the water glass yielding water resistant bonds. During the preparation of the product, the suspension of water glass and slag is agitated before being applied onto the product. The curing of tile binding agent can be carried out immediately or at a later time. Curing may be ef...

Hydrated sodium silicate particles can be expanded by heat to form thin-walled bubbles that can be broken, neutralized, washed and dried to provide hydrated silica flakes. These flakes can be mixed with non-swelling sorptive particles such as TLC grade silica and used to make chromatographic articles. One such article is a composite of a poly(tetrafluoroethylene) fibril matrix in which those particles and hydrated or fired silica flakes are enmeshed. The hydrated silica flakes can be fired to a ...

A metallized high specular gloss polyethylene plexifilamentary film-fibril sheet with very low emissivity is made by a process of calendering a polyethylene film-fibril sheet between a smooth metal roll and a soft, resilient roll to form a sheet of high specular gloss, followed by vacuum metallization of the smooth high specular gloss surface. Such metallized sheets are useful as radiant barriers or roof liners for energy savings purposes.

In a method of bonding a mirror to a rigid backing by means of a solvent-based adhesive, the solvent vapour from the bond line is extracted by interposing a porous layer between the mirror and the backing and extracting the solvent vapour through the porous layer by suction. Apparatus for this purpose includes first and second work stations 2,4 for supporting a rigid sheet of material 8, and means 39,40,44,46,56 for advancing the sheet from one station to the other through a third station equipp...

A cleaner impregnated towel comprises a flexible, porous substrate and a cleaner, the cleaner comprising a salt of the coconut fatty acid ester of isethionic acid, an antimicrobial compound comprising 5-chloro-2-(2,4-dichlorophenoxy) phenol and parachlorometaxylenol, and water.

This invention relates to improved sheet products and specifically to improved nonwoven sheet products made from highly oriented plexifilamentary film-fibril webs. The improved sheet products have high opacity and strength with a much wider range of porosity or Gurley Hill Porosity Values. In particular, sheet products made in accordance with the present invention have considerably higher Gurley Hill Porosity Values than similar weight sheet products subject to the same finishing treatments in a...

In order to improve the handling and filtering characteristics of a multilayered, textile, gas-permeable filter material against toxic chemical substances and, in particular, filter and protective materials for the production of sheet-like filters and protective suits for the civil and military fields, it is suggested that this filter material have a first layer as textile support layer which is bonded to a second layer present in the form of an areal adhesive layer. In addition, the filter mate...

Porous, absorbent macrostructures that, upon contacting liquids such as water or body exudates (e.g., urine), swell and imbibe such liquids, and are useful in absorbent articles such as diapers, adult incontinence pads, and sanitary napkins are disclosed. These porous macrostructures comprise bonded absorbent particles that are surface crosslinked with cationic, preferably polymeric, amino-epichlorohydrin adducts.