Abstract: A method and apparatus for reducing fuel consumption in an internal combustion engine including gasoline, petrol and diesel engines used in trucks, cars and for pumps including the steps of providing a thermal insulation shield that includes reflective fabric over the exhaust manifold, around the intake plenum for intake air and intake air box, covering the turbo charger compressor with a heat insulating material that includes a reflective fabric layer and the turbo charger drive turbine housing except for the bearing area to greatly reduce heat build up in the engine compartment thereby reducing intake air temperature for increased engine efficiency. The invention has been found to increase fuel efficiency in large trucks by ten to fifteen percent. The materials are light weight and do not significantly increase engine weight or truck loan weight.

Abstract: Producer-colored nylon fibers which are stain-resistant to acid dyes are made by adding pigment to nylon copolymers containing 0.25-4.0 percent by weight of an aromatic sulfonate or an alkali metal salt thereof. In addition process advantages relating to the use of the same copolymers in making pigmented nylon fibers are also disclosed.

Abstract: Spunlaced fabrics from poly(p-phenylene terephthalamide) or mixtures thereof with poly(m-phenylene isophthalamide) fibers having a specified flocked nylon surface can be dyed or printed and the flock does not significantly reduce the fire resistance of the base fabric.

Abstract: A plant-growing nonwoven mat comprising a layer of hollow synthetic organic fibers having in their lumens water-soluble plant adjuvants, such as plant nutrients, fungicides, algaecides, weed killers, pesticides, and the like, provides slow release of the adjuvants to enhance and protect plant growth.

Abstract: A fiber-forming copolyamide consisting essentially of between about 60 and about 99.5 mole % hexamethylene adipamide units and between about 0.5 and 40 mole percent 2-methyl-pentamethylene adipamide units, the copolyamide having an RV greater than about 25, and a melting point of greater than about 220.degree. C.

Abstract: Process for producing producer-colored nylon fibers which are stain-resistant to acid dyes are made by adding pigment to nylon copolymers containing 0.25-4.0 percent by weight of an aromatic sulfonate or an alkali metal salt thereof.

Abstract: A surprising improvement in dye-lightfastness of dyed nylon automotive fabrics is achieved by a combination of a copper salt and of an oxanilide light stabilizer. The oxanilide is effective with a surprisingly broad range of copper derivatives. Both the copper and the oxanilide may conveniently be applied from the dyebath, or, surprisingly, the copper provides improvements even if melt-spun into the fiber.

Abstract: A synthetic polyamide filament is composed of an acid-dyeable polyamide core surrounded by a basic-dyeable polyamide sheath containing aromatic sulfonate groups. At a normal dyeing pH of 4-7 the core accepts leveling acid dyes but not reserving acid or basic dyes. The sheath accepts leveling and nonleveling basic dyes. Versatility in cross-dye styling when such filaments are combined with acid-dyeable and basic-dyeable monocomponent filaments is demonstrated.