3 results about "Unsaturated fatty acid ester" patented technology

This application relates to the field of rubber sealing materials technology, and discloses a low-temperature resistant and high-resilience EPDM seal, its preparation method, and its application. The low-temperature resistant and high-resilience EPDM seal of this application uses a rubber matrix, carbon black, plasticizer, peroxide vulcanizing agent, vulcanization activator, crosslinking agent, and antioxidant as raw materials. The rubber matrix includes EPDM and modified EPDM, with modified EPDM accounting for 8-35% of the total mass of the rubber matrix. The plasticizer is selected from at least one of epoxidized fatty acid esters, epoxidized vegetable oils, and unsaturated fatty acid esters. Furthermore, the composition and proportion of each raw material are specified. The preparation method involves mixing, vulcanization, primary vulcanization, and secondary vulcanization steps, enabling the low-temperature resistant and high-resilience EPDM seal of this application to possess both excellent low-temperature resistance and high resilience, and high-temperature resistance to compression deformation, thus meeting the long-term sealing requirements of new energy vehicle engine cooling systems under different regions and operating conditions.

The present invention relates to a novel resin composition containing poly(3-hydroxybutyrate) (also referred to as "PHB") and a crystallization nucleating agent, the resin composition being capable of suppressing the occurrence of burrs and warpage during injection molding. The resin composition contains PHB, a polyglycerol unsaturated fatty acid ester, and a crystallization nucleating agent.

Provided is a novel resin composition containing poly(3-hydroxybutyrate) (also referred to as "PHB") and being capable of preventing adhesion to a metal part during fiberization.　The resin composition contains poly(3-hydroxybutyrate) and a polyglycerol unsaturated fatty acid ester.