Curable polysulfide polymers
Abstract
Abstract A ONE-PACKAGE SEALANT COMPOSITION CONSISTING ESSENTIALLY OF LIQUID MERCAPTAN-TERMINATED POLYSULFIDE POLYMER HAVING POLYSULFIDE GROUPS INTERCONNECTED BY DIVALANET ALIPHATIC HYDROCARBON GROUPS WHEREIN THE CARBON ATOMS MAY BE INTERRUPTED WITH OXYGEN ATOMS, A DUAL PURPOSE CURING AGENT AND ADHESION IMPROVER WHICH IS A MIXTURE OF A POLYOL DIACRYLATE AND A POLYOL TRIACRYLATE, SAID POLYOLS HAVING 2 TO 8 CARBON ATOMS, THE AMOUNT OF SAID ACRYLATE MIXTURE BEING AT LEAST THE STOICHIOMETRIC AMOUNT NEEDED TO REACT WITH THE MERCAPTAN GROUPS OF SAID POLYMER, AND A CURING CATALYST WHICH IS AN AMINE-IMPREGNATED MOLECULAR SIEVE. THE COMPOSITIONS DISCLOSED HEREIN CURE RAPIDLY AND ARE ESPECIALLY USEFUL AND SHOW GOOD ADHESION TO VINYL BASE PLASTIC SUBSTRATES, ACRYLONITRILEBUTADIENE-SYSTEMS (ABS), OR POLYVINYL CHLORIDE OR POLYVINYLIDENE CHLORIDE SUBSTRATES.
Inventors
- 👤 M Berenbaum
- 👤 J Pachuta
- 👤 E Sorg
Bibliographic Details
Claims Analysis
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