Abstract: A fiber-reinforced thermoplastic composite comprising a fiber reinforcement, a first thermoplastic polymer about said fiber reinforcement, and a second thermoplastic polymer interposed between said fiber reinforcement and said first thermoplastic polymer; said second thermoplastic polymer being different from and compatible with said first thermoplastic polymer and capable of wetting said fiber reinforcement; and to the process of making such composite.

Abstract: Disclosed are porous polyethylene fibers without a central cavity extending along the longitudinal axis thereof, and having (a) a porous structure containing pores defined by lamellar crystal portions and a large number of fibrils interconnecting the lamellar crystal portions, the pores communicating with each other anywhere from the surface to the center of the fiber, (b) a porosity of 50 to 80%, (c) a tensile strength of 1 to 8 g/d, and (d) an elongation of 1 to 300%.These porous polyethylene fibers do not exhibit the waxy feeling characteristic of polyethylene, have very light weight and a soft feeling, and are useful as a high-strength fiber material for the manufacture of clothing.

Abstract: High strength polyester multifilament yarn of improved dimensional stability, which has the proper combination of an intrinsic viscosity of at least 0.90, relatively low work loss and a high degree of toughness, is incorporated as tire cord into a rubber tire for reinforcement to provide an important improvement in fatigue life and retained fatigue strength. The continuous melt-spin process comprises the steps of feeding prepolymer to a first finisher vessel to achieve at least 0.4 intrinsic viscosity transferring polymer to a second finisher vessel for a period sufficient to achieve an intrinsic viscosity of at least 0.95, and supplying this polymer to an extrusion spinnerette.

Abstract: Disclosed is a glass fiber reinforced polyolefin resin composition comprising 15-80% by weight of polypropylene, 20-60% by weight of polybutene-1 and 5-60% by weight of glass fiber. This resin composition is excellent in the balance of impact strength, stiffness, heat distortion temperature, surface hardness and processability. When this composition is molded, the molded products have no surface roughness and no color shade and have good appearance. The properties are further improved when a modified polyolefin alone or together with a crystal nucleating agent are added.

Abstract: A carbon fiber-reinforced cementitious composite having high strength, which comprises continuous carbon fibers and a cured cement composition, comprising cement particles having an average particle size up to about the average diameter of the carbon fibers, the cured cement composition being substantially interposed between the individual carbon fibers; and a method for producing it.

Abstract: A method for impregnating a strand of filaments during the strand manufacture with thermoplastic or thermoset polymer powder particles is disclosed. The method includes the steps of forming a strand of filaments, keeping the filaments separate, impregnating the filaments with an aqueous slurry containing the powder particles, and drying the filaments to remove the water and produce a strand impregnated with powder particles. The powder particles are present on the strand in an amount of between about 5 to 50 weight percent based on the weight of the impregnated strand. Glass fibers coated with the slurry according to the process of this invention are suitable for impregnation with thermoplastic powders.

Abstract: An aqueous size composition for glass fibers is disclosed which includes a coupling agent, a binder or film former material and a thermoplastic polymer resin powder, wherein said composition is applied to the glass fiber surfaces during the fiber forming process. A rheology modifier material may be added to the size composition. One embodiment of the composition includes an organosilane coupling agent, a polyethylene oxide binder material and a polyamide thermoplastic polymer resin.

Abstract: An optical fiber of heat resistance, low-temperature resistance, flexural resistance, water absorption resistance, chemical resistance, etc., is provided by comprising a composition in which a core component comprises a polycarbonate or a silica type glass, a clad component comprises a graft-modified poly (4-methyl-1-pentene).

Abstract: A white blackout fiber comprising a core, a sheath, said sheath surrounding said core, said core including a light blocking substance therein that substantially prevents the transmission of light therethrough, the light blocking substance being in an amount equal to 0.005-0.01 weight % of the core, a whitening agent in the core in an amount equal to 3-10% of the weight of the core, and a whitening agent in the sheath in an amount equal to approximately 0.0-4.0 weight % of the sheath.

Abstract: A spinneret having octagonally-shaped orifices for producing yarn filaments having a characteristic cross-section and improved cross-sectional fidelity. The filament cross-section is characterized by generally symmetrical rectangular sub-sections each having four lobes and joined one to the other by a central bridging portion connecting the short facing sides of the sub-sections. This cross-section has increased surface area and remains substantially constant throughout the length of the filament whereby reduced air pressure is required when using the filament in air jet looms.

Abstract: Preforms and composite articles from carbon fiber reinforced matrix resins braided to shape on a mandrel and then converting to a final composite article by fully or partially curing in a mold followed by post curing if required.

Abstract: Disclosed is a polyolefin fiber having an improved initial elongation, which comprises a strongly drawn body of a composition comprising ultra-high-molecular-weight polyethylene and an ultra-high-molecular-weight copolymer of ethylene with an olefin having at least 3 carbon atoms at such a ratio that the content of the olefin having at least 3 carbon atoms in the entire composition is such that the number of side chains per 1000 carbon atoms in the composition is 0.2 to 5.0 on the average, and having an intrinsic viscosity [.eta.] of at least 5 dl/g as the entire composition, wherein the strongly drawn body has at least two crystal melting endothermic peaks, close to each other, in the region of temperatures higher by at least 15.degree. C. than the inherent crystal melting temperature (Tm) of the composition determined as the main melting endothermic peak at the second temperature elevation when measured in the restrained state by a differential scanning calorimeter.

Abstract: An oriented elastomeric filament spun from a thermoplastic elastomeric material selected from the group consisting of a block copolymer of polybutylene terephthalate and polytetramethylene glycol, a block copolymer of polybutylene terephthalate/polybutylene isophthalate and polyethylene glycol/polypropylene glycol, a block copolymer of polybutylene terphthalate/polyhexene terephthalate and polytetramethylene glycol, and a block copolymer of polyurethane ad polytetramethylene glycol, the mole fraction of the polybutylene terephthalate, polybutlene terephthalate/polybutylene isophthalate and polybutylene terephthalate/polyhexene terphthalate in the block copolymers is less than 0.5, the elastomeric filament is further oriented after the spinning by stretching at temperatures between 20.degree. C. to 120.degree. C.

Abstract: A thermoplastic impregnated fiberglass pipe or tube and the process for making such pipe are disclosed. The pipe or tube is made of thermoplastic impregnated fibrous roving which consists of a plurality of glass filaments, at least a portion of the filaments' surfaces being in contact with the residue produced by evaporating water from an aqueous size composition consisting of an organosilane coupling agent, a polyethylene oxide binder material, and a polypropylene thermoplastic polymer resin, wherein the composition is applied to the glass fiber during the fiber forming process. The pipe forming process includes filament winding the rovings around a spindle and thereafter heating the wound rovings to fuse the thermoplastic polymer resin.

Abstract: A sheath core fiber having an inner continuous core made from an oriented thermoplastic material, such as polyester, nylon, acrylic, and olefin completely surrounded by an adherent continuous sheath which is not readily removable from said core, is retained on said core during ultimate usage of said fiber, and is made of a nonthermoplastic material, such as regenerated cellulose and protein. The fiber maintains the crease and tear resistance of the core material, yet has the water sorptivity and dyeability of the sheath material.A method of manufacturing such a fiber is also disclosed.

Abstract: A high temperature PVC resin blend is made by blending from 60 to 85 parts PVC with no more than 40 parts of a ("alpha-SAN") copolymer of alpha-methyl styrene ("AMS"), styrene ("S") and acrylonitrile ("AN"), and less than 20 parts by wt additives including stabilizers, antioxidants, lubricants, and processing aids. In addition, an impact modifier may be added. The blend with particularly sized glass fibers, may be thermoformed at an elevated processing temperature and pressure, to provide a reinforced composite in which the PVC is covalently bonded to the glass fiber. The composite has a substantially higher HDT and equivalent tensile strength, compared to that of a similarly reinforced, unblended PVC composite, without sacrificing the novel composite's other desirable physical properties.

Abstract: There is disclosed a fiber of a fluorocarbon polymer having pendant ion exchange groups, the fiber having a tensile strength at break as high as at least 1.0 g/denier. The fiber can be produced by subjecting to hydrolysis or chemical modification treatment a filament of a fluorocarbon polymer having ion exchange precursor groups in melt-fabricatable form to convert the ion exchange precursor groups to ion exchange groups in melt-nonfabricatable form and subjecting the resultant heat-infusible filament to drawing.

Abstract: Disclosed is a reinforcing fibrous material having an improved adhesion, which consists essentially of a surface-treated, molecularly oriented, silane-crosslinked ultra-high-molecular-weight polyethylene fiber, wherein when the measurement is conducted under restraint conditions by using a differential scanning calorimeter, the crosslinked polyethylene fiber has at least two crystal melting peaks (Tp) at temperatures higher by at least 10.degree. C. than the inherent crystal melting temperature (Tm) of the ultra-high-molecular-weight polyethylene determined as the main peak at the time of the second temperature elevation, the heat of fusion based on these crystal melting peaks (Tp) is at least 50% of the whole heat of fusion, and the sum of heat of fusion of high-temperature side peaks (Tp1) at temperatures in the range of from (TM+35).degree. C. to (Tm+120).degree. C.

Abstract: A structural material comprising a plurality of irregularly arranged members contacting one another with the points of contact forming junctions, the members being coated, which coating holds the members together to form a strong integral structural material and methods for producing same.

Abstract: A method of forming a colored coating film on a cross-linked polyethylene comprises coating a coloring paint prepared by blending a prepolymer having acryloyl and/or methacryloyl groups in the molecule, a monomer and/or oligmer having the above-mentioned groups in the molecule and a pigment on the surface of cross-linked polyethylene and then curing the paint under the irradiation of UV-rays.