Abstract: An aqueous binder composition containing a urea-formaldehyde resin modified with an additive comprising (1) styrene acrylic acid or styrene acrylate, (2) an adduct of styrene, maleic anhydride, and an acrylic acid or acrylate or (3) a physical mixture of a styrene acrylic acid or styrene-acrylate copolymer and a styrene-maleic anhydride copolymer. The resulting binder is used in the preparation of fiber mats.

Abstract: An aqueous binder composition containing a urea-formaldehyde resin modified with an additive comprising (1) styrene acrylic acid or styrene acrylate, (2) an adduct of styrene, maleic anhydride, and an acrylic acid or acrylate or (3) a physical mixture of a styrene acrylic acid or styrene-acrylate copolymer and a styrene-maleic anhydride copolymer. The resulting binder is used in the preparation of fiber mats.

Abstract: Coating compositions comprising an alkylated urea-formaldehyde resin and a polymethylol cyclohexane, which are useful for low temperature cure and are low in viscosity to allow ease of coating without the need for appreciable amounts of solvent thinners. The alkylated urea-formaldehyde condensates have an average degree of condensation of about 3 or less and a combined urea:formaldehyde:alcohol ratio in the range of about 1:2-3:1-2.5. The compositions may be cured in the presence of acid catalysts in the temperature range of 70 to 105.degree. C., and are particularly useful for coating paper, cloth and wood substrates.

Abstract: Coating compositions comprising an alkylated urea-formaldehyde resin, a polymethylolcyclohexane and a polyoxypropylene polyol which are useful for low temperature cure and are low in viscosity to allow ease of coating without the need for appreciable amounts of solvent thinners. The alkylated urea-formaldehyde condensates have an average degree of condensation of about 3 or less and a combined urea:formaldehyde:alcohol ratio in the range of about 1:2-3:1-2.5. The compositions may be cured in the presence of acid catalysts in the temperature range of 70.degree. to 105.degree. C., and are particularly useful for coating paper, cloth and wood substrates.

Abstract: Disclosed is a piston ring including a spacer-expander spring member. In a preferred embodiment the ring is of cast iron and includes two axially spaced cylinder wall contacting lands. At least one generally rectangular inwardly facing spring receiving recess is formed in the interior wall of the ring to receive the spring member which is formed from a flat strip of metal in a "U" configuration with the legs thereof facing outwardly, preferably aligned with the lands on the ring. A plurality of slots are provided in the spring member dividing the periphery into a plurality of feet. In a preferred embodiment the feet are radiused as seen in plan view to a radius less than the radius of the pocket in which they fit. This has been found to reduce wear in the spring receiving groove and to reduce the tendency of the ring and spring to become united which is detrimental to performance and is a common problem in rings of this general type.

Abstract: Coating compositions comprising alkoxymethylaminotriazines, polyols and polyether triols which are useful for low temperature cure, are low in viscosity to allow ease of coating without the need for appreciable amounts of solvent thinners, and provide coatings free from the problems of crawling, cratering, pinholing and "orange peel" formation. The alkoxymethylaminotriazines are preferably alkoxymethylmelamines. The polyols are polymethylol compounds in which oxygen atoms are separated by at least three carbon atoms of an aliphatic or alicyclic chain. The compositions may be cured in the presence of acid catalysts in the temperature range of 70.degree. to 105.degree. C.

Abstract: Coating compositions comprising alkoxymethylaminotriazines, polyols and polyhydroxy oligomers which are useful for low temperature cure, are low in viscosity to allow ease of coating without the need for appreciable amounts of solvent thinners, and provide coatings free from the problems of crawling, cratering, pinholing and "orange peel" formation. The alkoxymethylaminotriazines are preferably alkoxymethylmelamines. The polyols are polymethylol cyclohexanes containing from 2 to 4 methylol groups. The polyhydroxy oligomers are polyesters or acrylic resins. The compositions may be cured in the presence of acid catalysts in the temperature range of 70.degree. to 105.degree. C.

Abstract: Coating compositions comprising alkoxymethylaminotriazines and polyols, which are useful for low temperature cure, are low in viscosity to allow ease of coating without the need for appreciable amounts of solvent thinners, and provide coatings free from the problems of crawling, cratering, pin-holing and "orange peel" formation. The alkoxymethylaminotriazines are preferably alkoxymethylmelamines. The polyols are polymethylol compounds containing an alicyclic or branched aliphatic structure. The compositions may be cured in the presence of acid catalysts in the temperature range of 70 to 105.degree. C.

Abstract: Disclosed is a piston ring including a spacer-expander spring member. In a preferred embodiment the ring is of cast iron and includes two axially spaced cylinder wall contacting lands. At least one generally rectangular inwardly facing spring receiving recess is formed in the interior wall of the ring to receive the spring member which is formed from a flat strip of metal in a "U" configuration with the legs thereof facing outwardly, peferably aligned with the lands on the ring. A plurality of slots are provided in the spring member dividing the periphery into a plurality of feet. In a preferred embodiment the feet are radiused as seen in plan view to a radius less than the radius of the pocket in which they fit. This has been found to reduce wear in the spring receiving groove and to reduce the tendency of the ring and spring to become united which is detrimental to performance and is a common problem in rings of this general type.

Abstract: The invention relates to high ortho phenolic resole resins and varnishes. The phenolic resole resins are produced by reacting under acidic conditions formaldehyde with a phenol in the presence of a divalent electropositive metal ion. The resulting novel resole is then dissolved in organic solvent. The solutions are useful as varnishes in the manufacture of impregnated sheets, laminates and other reinforced plastics.