Ethylene-based copolymers and propylene-alpha olefin diene compounds for use in layered bodies
Patent Information
- Application Number
- DE602020070750
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-07-17
- Filing Date
- 2020-07-17
- Publication Date
- 2026-04-22
- Estimated Expiration
- 2040-07-17
AI Technical Summary
Existing ethylene-propylene-(diene) polymers (EP(D)M) compositions for transmission belts lack adequate tack and green strength, which are crucial for manufacturing and performance, and current additives like hydrocarbon tackifiers either degrade under heat or increase costs without improving mechanical properties.
A composition comprising at least 5 phr of a propylene-α-olefin-diene (PEDM) terpolymer and 20 phr to 95 phr of an ethylene-based copolymer, which enhances green tack, tack aging, and green strength, improving the manufacturing and performance of transmission belts.
The composition provides improved green tack and strength, enabling better manufacturing and performance of transmission belts by balancing tack and green strength, while maintaining mechanical properties and reducing costs.