Abstract:
A PROCESS FOR FOAMING AND HARDENING AN EPOXY RESIN OR MIXTURES THEREOF WITH A LACTONE OR A CYCLIC ETHER UNDER THE ACTION OF INERT READILY VOLATILE ORGANIC SOLVENTS AS FOAMING AGENTS AND FLUOPHOSPHORIC ACID OR MIXTURES OF FLUOPHOSPHORIC ACID WITH OTHER PHOSPHORUS COMPOUNDS AS HARDENERS.
Abstract:
PROCESS FOR HARDENING EPOXY COMPOUNDS HAVING MORE THAN ONE EPOXY GROUP PER MOLECULE, IF DESIRED WITH ADDITION OF LACTONES OR COPOLYMERIZABL CYCLIC ETHERS, COMPRISING USING FLUOPHOSPHORIC ACID, IF DESIRED IN ADMIXTURE WITH ACID PHOSPHORUS COMPOUNDS AS HARDENER FOR EPOXY RESIN TO PROVIDE FOR LOW TEMPERATURE HARDENING, INCREASED HARDENING RATE, AND IMPROVED MECHANICAL PROPERTIES OF THE HARDENING RESIN.
Abstract:
IN WHICH R AND R'' EACH REPRESENTS AN ALKYL, ARYL, CYCLOALKYL, ALKYLARYL, ARALKYL, ALKOXYALKYL, ALKOXYARYL, OXALKYL, ORARYL, OR ALKENYL GROUP IN THE PRESENCE OF INERT LIQUID BLOWING AGNETS AND CELL REGULATORS. THE CELLULAR PLASTICS OBTAINED HAVE UNIFORM CELLS AND NO CRACKS IN THE INTERIOR.
R-P(=O)(-OH)2 (I) OR R''-O-P(=O)(-OH)2 (II)
PROCESS FOR THE MANUFACTURE OF CELLULAR PLASTICS BY CURING EPOXIDE RESINS WITH A MIXTURE OF LEWIS ACIDS WITH AT LEAST ONE PHOSPHORUS COMPOUND OF THE FORMULA
Abstract:
A PROCESS FOR PRODUCING CELLULAR PLASTIC MATERIALS BY CURING EPOXIDE COMPOUNDS HAVING MORE THAN ONE EPOXIDE GROUP IN THE MOLECULE WHICH COMPRISES CARRYING OUT THE CURING AND FOAMING IN THE PRESENCE OF MIXTURES OF PHOSPHOROUS ACID WITH LEWIS ACIDS AND IN THE PRESENCE OF VOLATILE EXPANDING AGENTS AND OPTIONALLY IN THE PRESENCE OF PORE REGULATING SUBSTANCES, REACTIVE DILUENTS AND COMONOMERS OR MIXTURES OF THE LAST-MENTIONED SUBSTANCES, DILUENTS AND COMONOMERS. THE CELLULAR PLASTICS OBTAINED MAY HAVE EITHER CLOSED CELLS OR OPEN CELLS OR SIMULTANEOUSLY CLOSED AND OPEN CELLS, THE PROPORTION OF WHICH IS ADJUSTABLE.
Abstract:
LIQUID POLYEPOXIDES OR SOLVENT SOLUTIONS OF SOLID POLYEPOXIDES HAVING 2 TO 10 EPOXY GROUPS AND PREFERABLY EPOXIDE EQUIVALENTS OF 100 TO 300 ARE CURED WITHOUT APPLICATION OF EXTERNAL HEAT BY MIXING THEM WITH A CATALYST SYSTEM CONSISTING ESSENTIALLY OF A MIXTURE OF A LEWIS ACID AND A PHOSPHORUS COMPOUND OF THE FORMULA
R-P(=O)(-OH)2 OR R''-O-P(=O)(-OH)2
IN WHICH R AND R'' REPRESENT ALKYL, ARYL, CYCLOALKYL, ALKYLARYL, ARALKYL, ALKOXYALKYL, ALKOXYARYL, HYDROXYALKYL. HYDROXYARYL, HYDROXYARALKYL OR ALKENYL. EPOXIDE RESINS ARE THUS OBTAINED BY A ROOM TEMPERATURE CURE WHICH EXHIBIT GOOD RESISTANCE TO ALKALIES. THE PRODUCTS MAY BE USED FOR MAKING GLASS FIBER REINFORCED ARTICLES AND FOR COATING SUCH MATERIALS AS PAPER, METALS, WOOD, TEXTILES AND PLASTICS.
Abstract:
A process for foaming and hardening an epoxy resin or mixtures of an epoxy resin with a lactone or a cyclic ether under the action of inert readily /volatile organic solvents as foaming agents and a mixture of a Lewis acid with phosphoric acid and/or a phosphoric acid derivative containing at least one POP group.
Abstract:
EPOXY CELLULAR PLASTICS ARE PRODUCED BY FOAMING AND CURING AN EPOXY RESIN IN THE PRESENCE OF A BLOWING AGENT, AN ALIPHATIC OR CYCLOALIPHATIC POLYHYDRIC ALCOHOL AND A LEWIS ACID OR AN ADDITION- OR COMPLEX COMPOUND OF A LEWIS ACID.
Abstract:
Emulsifier-containing plastics dispersions which serve as a binder for dispersion paints, should contain polymers forming a film at room temperature and having a high wet adhesion. Suitable polymers are prepared by polymerization of olefinically unsaturated monomers initiated by free radical-forming agents, especially in the presence of an emulsifier. As emulsifier there is used a salt of an acyl ester of the hydroxymethane-phosphonic acid. The emulsifier may remain in the dispersion ready-for-use without involving disadvantages for the wet adhesion.