Glass fiber filament bundles such as cords for rubber reinforcement are impregnated and coated with an elastomer composition such that the coated cord maintains adhesion and tensile strength even in a moist environment due to the inclusion in the coating of a chemically treated diatomaceous earth. These chemically treated diatomaceous earths contain a major portion of an alkali earth metal silicate.
REFERENCE TO CROSS-RELATED APPLICATIONS
This application is a continuation-in-part of application Ser. No. 461,683, filed Apr. 17, 1974, now abandoned.
A method for the preparation of a fiber reinforced modified phenolic resin composite, which comprises preparing a resole type phenolic resin having 60-75 wt % solid content and 5-10 wt % free aldehyde; preparing a blocked polyurethane resin having an average molecular weight of 2000-8000 and a viscosity of 500-1000 cps at 80.degree. C.; mixing the resole type phenolic resin, the blocked polyurethane resin and an acid catalyst at room temperature to form an impregnating resin, wherein the amount of the acid catalyst mixed is 2-10 wt %, based on the weight of the resole type phenolic resin, and the amount of the blocked polyurethane mixed is 5-20 wt %, based on the total weight of the mixed resins; and impregnating a plurality of filaments with the impregnating resin, and curing the impregnated filaments with a heat treatment to form a fiber reinforced modified phenolic resin composite.
The objects of the present invention are to provide a method for preventing the deterioration of rubber products on storage, and maintaining quality of the rubber products good. The method of the present invention is characterized in that the rubber products are sealed in a container having gas barrier properties from which an oxygen and moisture are substantially removed, and in the above method, is characterized in that the rubber products are sealed in a container having gas barrier properties, together with an oxygen absorbent which requires no moisture for absorbing an oxygen and a dehydrating agent, and further preferably, is characterized in that the oxygen absorbent comprises an unsaturated fatty acid compound and/or a chain hydrocarbon polymer having unsaturated group as main agents and an oxygen absorbing accelerator.
Concrete fender pile having prestressing members (19, 20) of elongated, high-strength fiber composite elements (21) with a low modulus of elasticity which, during a ramming impact (p), permit a large elastic deflection of the fender pile (14) and are insensitive to aggressive environmental effects.
A chemical treating composition, treated glass-type surfaces and vinyl addition polymer compatible substrates with such treated surfaces are provided where the treating composition has at least five nonaqueous components. These components include in weight percent of the nonaqueous component the following: at least one starch in an amount from around 1 to around slightly greater than 50, at least one wax in an amount to have a ratio with the starch and a range of around 0.9 to 1 wax to starch to an excess amount of wax or amounts greater than 1 to 1; at least one cationic lubricant from around 3 to around 20; at least one organo metallic coupling agent from around 1 to around 5; at least one material such as a second film forming polymer in an amount from around 1 to around 15 but always in an amount less than the amount of wax and/or condensation products of polyamines and fatty acids in an amount in the range of from around 1 to around 20 weight percent of the nonaqueous components and/or polymer adhesion promoter such as esters of carboxylic acids and/or anhydrides like: aliphatic and/or cyclic dicarboxylic acid esters, adipates, sebacates, azelates, phthalic esters, trimellitic esters that are present in an amount up to around 20 weight percent of the non-aqueous components. In this formulation, the amount of wax is always greater than the amount of each individual nonaqueous component other than starch whereas with starch, it can be in a ratio of slightly less than 1 to 1. The chemical treatment is placed on glass-type surfaces such as glass where the substrate can be of any form or shape such as fibers that have very good adhesion to matrix polymers such as vinyl addition polymers and plastisols and organosols thereof to provide polymer reinforcement or substrates for encapsulation, impregnation or coating.
An aqueous coating composition for filamentary materials that are to be used in reinforcing elastomeric matrix materials is provided that renders reinforced elastomeric materials having improved properties of flexibility and fatigue resistance. The aqueous adhesive coating composition has a vinyl-pyridine-containing copolymer or terpolymer latex, a phenolic aldehyde condensate polymer, and a non-self-crosslinkable elastomeric latex with a low gel content of less than around 40 weight percent and a low average particle size of less than around 2000 angstroms. The vinyl pyridine-containing elastomeric latex is produced from a vinyl pyridine-containing monomer, 1,3-diene hydrocarbon monomer or the terpolymer is produced in the same way with the addition of a vinyl containing monomer. In addition the aqueous adhesive coating composition may contain a wax emulsion, antioxidant, and carboxylated styrene butadiene copolymer latex. The aqueous adhesive coating composition is used to treat filamentary material which are then dried or dried and partially cured, and combined with the elastomeric matrix material to produce reinforced elastomeric products.