Abstract:
A polyester-polysulfide-polythiol curing agent which is the reaction product of a polyol and a mixture of a mercaptoalkanoic acid and a thiodialkanoic acid. This curing agent is employed to cure epoxy resins.
Abstract:
HOT MELT ADHESIVE COMPOSITIONS WITH SUPERIOR RESISTANCE TO HIGH TEMPERATURE LOSS OF STRENGTH ARE PREPARED FROM CONVENTIONAL INGREDIENTS INCLUDING RESIN TACKIFIERS AND WAXES PLUS A HIGH MELT FLOW RESINOUS POLYMER OF PROPYLENE THE ADHESIVES FORMULATIONS CAN CONTAIN ABOUT 20 TO 90 WEIGHT PARTS OF SUBSTANTIALLY CRYSTALLINE RESINOUS PROPYLENE POLYMER WHICH INCLUDES HOMOPOLYMERS OF PROPYLENE, AND COPOLYMERS OF ETHYLENE AND PROPYLENE AND 10 TO 80 WEIGHT PARTS OF RESIN TACKIFIER AND OPTIONALLY A PROPORTION OF WAX PER 100 PARTS OF TOTAL ADHESIVE FORMULATION. THE COMPOSITIONS CAN BE USED AS SEALANTS OR ADHESIVES IN PRODUCING LAMINATES WHICH CAN THEN BE EXPOSED TO BOILING WATER OR STEAM WITHOUT ADHESIVE FAILURE.
Abstract:
A POLYESTER-POLYSULFIDE-POLYTHIOL CURING AGENT WHICH IS THE REACTION PRODUCT OF A POLYOL AND A MIXTURE OF A MERCAPTOALKANOIC ACID AND A THIODIALKANOIC ACID. THIS CURING AGENT IS EMPLOYED TO CURE EPOXY RESINS.
Abstract:
MERCAPTOALKANOIC ACIDS AND THIODIALKANOIC ACIDS ARE REACTED WITH A POLY8OXYALKYLENE)-POLYOL HAVING ON AVERAGE MORE THAN TWO PENDENT HYDROXY GROUPS PER MOLECULE TO FORM A POLY(OXYALKYLENE)-POLYESTER-POLY(MONOSULFIDE)POLYTHIOL HAVING AN AVERAGE MORE THAN TOW PENDENT THIOL GROUPS PER MOLECULE. THE POLY(OXYALKYLENE)-POLYESTERPOLY(MONOSULFIDE)-POLYTHIOL IS OXIDATIVELY COUPLED OR CURED, PREFERABLY IN A SEALANT FORMULATION, WITH AN OXIDATIVE COUPLING OR CURING AGENT, INCLUDING METALLIC OXIDES, PEROXIDE, SULFIR AND THE LIKE, TO FORM A COMPOSITION USEFUL AS A SEALLANT.
Abstract:
Polyamides, useful as hot-melt adhesives, are prepared by condensing: (a) mixtures of at least two reaction products selected from the group consisting of the reaction product of a diamine and isophthalic acid, the reaction product of a diamine and terephthalic acid, and the reaction product of a diamine and a mixture of isophthalic acid and terephthalic acid or (b) the reaction product of a diamine and a mixture of isophthalic acid and terephthalic acid.
Abstract:
Poly(ether esters) are prepared by reacting a phthalic acid salt with a di(haloalkyl)ether in a polar solvent using a phosphonium salt catalyst. The resulting poly(ether esters) are useful in olefin polymers to improve dye receptivity.