Vulcanized elastomeric blends containing a cyclic ester polymer

Abstract

Abstract WHEREINE EACH R'' IS SELECTED FROM THE CLASS CONSISTING OF, INDIVIDUALL, HYDROGEN, ALKYL, CYCLOALKYL, ARYL, AND CHLOROALKYL, AND, TOGETHER WITH THE ETHYLENE MOIETY OF THE OXYETHYLENE CHAIN OF UNIT 11, A SATURATED CYCLOALIPHATIC HYDROCARBON RING HAVING 4 TO 8 CARBON ATOMS, AND VULCANIZABLES THEREOF. THESE NOVEL VULCANIZABLE ELASTOMERIC COMPOSITIONS ARE USEFUL IN THE PRODUCTION OF MOLDED ARTICLES OF A VARIETY OF SHAPES AND FORMS AS, FOR EXAMPLE, FILMS, WIRE AND CABLE COATINGS, ARTICLES OF MANUFACTURE, AND THE LIKE, AND CAN BE VULCANIZED OR THERMOSET IN SUCH SHAPES AND FORMS. -(O-CH(-R'')-CH(-R''))- WHEREIN EACH R, INDIVIDUALLY, IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, ALKYL, HALO, AND ALKOXY; A IS THE OXY GROUP; X IS AN INTEGER FROM 1 TO 4; Y IS AN INTEGER FROM 1 TO 4; Z IS AN INTEGER OF ZERO OR ONE; WITH THE PROVISOS THAT (A) THE SUM OF X+Y+Z IS AT LEAST 4 AND NOT GREATER THAN 7, AND (B) THE TOTAL NUMBER OR R VARIABLES WHICH ARE SUBSTITUENTS OTHER THAN HYDROGEN DOES NOT EXCEED 3, AND UP TO A MINOR MOLAR AMOUNT OF RECURRING UNITS OF THE FORMULA: -(O-(C(-R)2)X-(A)Z-(C(-R)2)Y-CO)- VULCANIZABLE ELASTOMERIC BLENDS HAVING IMPROVED PROCESSABILITY, ADDITIVE ACCEPTANCE, IMPROVED STRENGHTS IN THE VULCANIZED FORM, IMPROVED CREEP RESISTANCE IN THE UNVULCANIZED FORM, IMPROVED HANDLING AND FORMING CHARACTERISTICS IN THE UNVULCANIZED FORM AND/OR IMPROVED STIFFNESS, OR IN SOME CASES IMPROVED FLEXIBILITY, IN THE UNCURED AND CURED FORMAS, CONTAINING A VULCANIZABLE RUBBER GUMSTOCK HAVING SUBSTANTIAL, REIDUAL, ETHYLENIC UNSATURATION AND A CYCLIC ESTER POLYMER CONTAINING RECURRING UNITS OF THE FORMULA:

Inventors

• 👤 Robert Dean Lundberg
• 👤 Joseph Victor Koleske
• 👤 Earl Richard Walter

Bibliographic Details