摘要:
CORRUGATED FIBERBOARD HAVING AT LEAST ONE SHEET OF THE BOARD STRUCTURE IMPREGNATED WITH A MIXTURE OF A MODIFIED RESOLE TYPE PHENOLIC RESIN AND A POLYMINOALKYL-SUBSTITUTED ORGANOSILOXANE COPOLYMER, AND PROCEDURE FOR MAKING.
摘要:
Corrugated fiberboard which resists deterioration in strength when in the presence of moisture or water, and which has improved folding endurance. Such board is made by preliminarily treating medium and, optionally, liner members with a mixture of aminoplast containing phenol-aldehyde resole resin with polyvinyl alcohol (and/or with polyvinyl acetate and/or partially hydrolyzed such mixtures) and thereafter fabricating corrugated fiberboard from the so-treated members using a waterproof adhesive system containing polyvinyl alcohol, polyvinyl acetate, urea-formaldehyde, and/or phenol-aldehyde.
摘要:
Corrugated fiberboard which resists deterioration in strength when in the presence of moisture or water, and intermediate resin treated medium and liner sheet members useful in the manufacture thereof. Such board is made by treating medium and, optionally, liner members with an aminoplast modified phenol aldehyde resole resin composition and thereafter bonding corrugated medium to liner members with a thermosetting waterproof adhesive system.
摘要:
DISCLOSED HEREIN ARE RESIN SYSTEMS CHARACTERIZED BY IMPROVED OXIDATIVE THERMAL STABILITY WHICH ARE OBTAINED BY INCORPORATING A BENEFICIATING STABILIZING ADDITIVE INTO A POLYMER FORMING COMPOSITION COMPRISING (1) AROMATIC POLYCARBOXYLIC COMPONENTS CONTAINING FROM THREE TO FOUR CARBOXYLIC ACID GROUPS PER MOLECULE SELECTED FROM THE GROUP CONSISTING OF FREE POLYCARBOXYLIC ACIDS, ESTERS OF POLYCARBOXYLIC ACIDS AND AMMONIUM SALTS OF POLYCARBOXYLIC ACIDS AND (2) A POLYAMINE COMPONENT HAVING AT LEAST TWO PRIMARY AMINO GROUPS PER MOLECULE. THE BENEFICIATING STAILIZING ADDITIVES USED IN THE PRACTICE OF THE PRESENT INVENTION INCLUDE BORIC ACID, PHOSPHORIC ACID, SULFURIC ACID AND THEIR ACID DERIVATIVES AND ESTERS AND AMMONIUM SALTS OF THE FOREGOINING ACIDS.
摘要:
THERMOSETTABLE POLYMERIC COMPOSITIONS INCORPORATING A NOVOLAC RESIN AND AN AROMATIC POLYCARBOXYLIC COMPOUND. WHEN THERMOSET BY HEAT, THESE COMPOSITIONS DISPLAY IMPROVED THERMAL STABILITY.
摘要:
DISCLOSED HEREIN ARE SPECIALLY TREATED FIBROUS REINFORCING ELEMENTS WHICH ARE ADAPTED FOR USE AS THE REINFORCING ELEMENT IN FIBRE REINFORCED RESIN COMPOSITES. THE TREATED FIBROUS REINFORCING ELEMENTS PROVIDE RESIN IMPREGNATED FIBER REINFORCED STRUCTURES WHICH EXHIBIT IMPROVED THERMAL STABILITY AND PROLONGED USEFUL LIFE AT ELEVATED TEMPERATURES. IN THE PRACTICE OF THE PRESENT INVENTION THE FIBROUS REINFORCING ELEMENT IS TREATED WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BORIC ACID, PHOSPHORIC ACID, SULFURIC ACID AND THEIR ACID DERIVATIVES AND ESTERS AND SALTS OF THE FOREGOING ACIDS.
摘要:
This application describes a stable, aqueous catalyst system adapted to be admixed with an aqueous resole resin and thereafter to accelerate resin cure when the product mixed resin system is dried and thermoset. The catalyst is especially useful when using phenolic resins for treating paper employed in the manufacture of water-repellent resin treated paper.
摘要:
IMPROVED EPOXY NOVOLAC RESINS PRODUCED BY FIRST REACTING EPICHLOROHYDRIN WITH AN ALKYLATED PHENOL ALDEHYDE NOVOLAC RESIN WHEREIN SAID ALKYLATE IS A SPECIFIC C8 THROUGH C13 MIXTURE OF CARBOCYCLIC COMPOUNDS, AND THEN THEREAFTER DEHYDROHALOGENATING THE RESULTING PRODUCT.