Impact modifier compositions with improved flowability
Physical blends of solid particulates of chlorinated polyolefins and elastomeric ethylene copolymers yield a blended product with anti-blocking characteristics superior to that defined by the weight proportion-based linear interpolation of either blend component. The blend compositions are useful as impact modifiers for polyvinyl chloride compositions.
1. A physical blend of particulates comprising:
a first component, wherein said first component being a chlorinated polyethylene, and said first component being in a powder form, micropellet form, or pellet form; and
a second component, wherein said second component being an elstomeric ethylene copolymer, and said second component being in a powder form, micropellet form, or pellet form;
wherein said blend having a measured Unconfined Yield Strength of less than the measured Unconfined Yield Strength of either said first component or said second component.
2. The blend according to claim 1 , wherein said blend further comprising an anti-blocking agent.
3. The blend according to claim 1 , wherein said blend comprising from about 1 to about 60 percent by weight of said first component based on the total weight of said blend.
4. The blend according to claim 2 , wherein said first component comprising from about less than 10 percent by weight of said anti-blocking agent.
5. The blend according to claim 1 , wherein said elseomeric polyethylene copolymer being an ethylene/alpha-olefin copolymer.
6. The blend according to claim 1 , wherein said first component being in a powder form.
7. The blend according to claim 1 , wherein said second component being in a micropellet form.
8. A physical blend of particulates consisting essentially of:
a first component, wherein said first component being a chlorinated polyethylene, and said first component being in a powder form, micropellet form, or pellet form; and
a second component, wherein said second component being an elstomeric ethylene copolymer, and said second component being in a powder form, micropellet form, or pellet form;
wherein said blend having a measured Unconfined Yield Strength of less than the measured Unconfined Yield Strength of either said first component or said second component.
9. The blend according to claim 8 , wherein said blend further including an antiblocking agent.
10. The blend according to claim 8 , wherein said blend comprising from about 1 to about 60 percent by weight of said first component based on the total weight of said blend.
11. The blend according to claim 8 , wherein said elstomeric polyethylene copolymer being an ethylene/alpha-olefin copolymer.
12. The blend according to claim 8 , wherein said first component being in a powder form.
13. The blend according to claim 8 , wherein said second component being in a micropellet form.