METALLIC ACRYLATE SALTS TO INCREASE POLYMER MELT STRENGTH
A composition can include a polyolefin, a styrenic polymer, or a polylactic acid. The composition can include a metallic acrylate salt. A method of making a composition can include melt mixing a polyolefin, a styrenic polymer, or a polylactic acid with a metallic acrylate salt.
1 . A composition comprising:
a polyolefin, a styrenic polymer, or a polylactic acid; and
a metallic acrylate salt.
2 . The composition of claim 1 , wherein the metallic acrylate salt is zinc diacrylate, zinc dimethacrylate, zinc monomethacrylate, calcium diacrylate or sodium acrylate.
3 . The composition of claim 2 , further comprising an organic peroxide.
4 . The composition of claim 1 , wherein the concentration of the metallic acrylate salt is between 0.001 and 30 wt % of the composition.
5 . The composition of claim 4 , wherein the concentration of the metallic acrylate salt is between 0.5 to 15 wt % of the composition.
6 . The composition of claim 1 , wherein the composition comprises the polyolefin, and wherein the polyolefin is a linear low density polyethylene, an elastomer, a plastomer, a high density polyethylene, a low density polyethylene, or a medium density polyethylene.
7 . The composition of claim 1 , wherein the composition comprises the polyolefin, and wherein the polyolefin is a polypropylene homopolymer.
8 . The composition of claim 1 , wherein the composition comprises the polyolefin, and wherein the polyolefin is a propylene copolymer.
9 . The composition of claim 8 , wherein the propylene copolymer is a mini-random copolymer, a random copolymer, or an impact copolymer.
10 . The composition of claim 1 , wherein the composition comprises the styrenic polymer, and wherein the styrenic polymer is polystyrene.
11 . The composition of claim 1 , wherein the composition comprises the styrenic polymer, and wherein the styrenic polymer is a high impact polystyrene.
12 . A method of making a composition comprising:
melt mixing a polyolefin, a styrenic polymer, or a polylactic acid with a metallic acrylate salt.
13 . The method of claim 12 , wherein the melt mixing is performed by a single and twin screw extruder, a banbury mixer, or a roll mill.
14 . The method of claim 12 , wherein the metallic acrylate salt is zinc diacrylate, zinc dimethacrylate, zinc monomethacrylate, or sodium acrylate.
15 . The method of claim 12 , wherein the melt mixing step further comprises mixing an organic peroxide with the metallic acrylate salt and the polyolefin, the styrenic polymer or the polylactic acid.
16 . The method of claim 12 , wherein the concentration of the metallic acrylate salt is between 0.001 and 30 wt % of the composition.
17 . The method of claim 16 , wherein the concentration of the metallic acrylate salt is between 0.5 to 15 wt % of the composition.
18 . The method of claim 12 , wherein the composition comprises the polyolefin, and wherein the polyolefin is a linear low density polyethylene, an elastomer, a plastomer, a high density polyethylene, a low density polyethylene, or a medium density polyethylene.
19 . The method of claim 12 , wherein the composition comprises the polyolefin, and wherein the polyolefin is a polypropylene homopolymer.
20 . The method of claim 19 , wherein the composition comprises the polyolefin, and wherein the polyolefin is a propylene copolymer.
21 . The method of claim 20 , wherein the propylene copolymer is a mini-random copolymer, a random copolymer, or an impact copolymer.
22 . The method of claim 12 , wherein the composition comprises the styrenic polymer, and wherein the styrenic polymer is polystyrene.
23 . The method of claim 12 , wherein the composition comprises the styrenic polymer, and wherein the styrenic polymer is a high impact polystyrene.
24 . The method of claim 12 , wherein the metallic acrylate salt is formed in situ during the melt mixing.