Low molecular weight ethylene interpolymers, methods of making, and uses thereof
The invention provides a comprising one or more ethylene interpolymers, and wherein the interpolymers, or the composition, has a melt viscosity from 1 to 30,000 cP at 177° C., and wherein at least one ethylene interpolymer has an Rv from 0.3 to 0.99. The invention further provides a composition comprising at least one low molecular weight (LMW) ethylene interpolymer, and at least one high molecular weight (HMW) ethylene interpolymer, and wherein the composition has a melt viscosity from 1 to 30,000 cP at 177° C., and wherein the sum of the Rv from the low molecular weight interpolymer and the high molecular weight interpolymer is from 0.3 to 2. The invention further provides for processes of making such compositions, processes for functionalizing the interpolymer(s) of such compositions, and articles comprising at least one component prepared from an inventive composition.
1. A composition comprising at least one low molecular weight (LMW) ethylene interpolymer, and at least one high molecular weight (HMW) ethylene interpolymer, and wherein the composition has a melt viscosity from 1 to 30,000 cP at 177° C., and wherein the sum of the Rv from the low molecular weight interpolymer and the high molecular weight interpolymer is from 0.3 to 2.
2. The composition of claim 1 , wherein the at least one low molecular weight (LMW) ethylene interpolymer has a molecular weight distribution, Mw/Mn, from 1 to 5, and the at least one high molecular weight (HMW) ethylene interpolymer has a molecular weight distribution, Mw/Mn, from 1 to 10.
3. The composition of claim 1 , wherein the at least one low molecular weight (LMW) ethylene interpolymer has a weight average molecular weight from 100 to 5,000, and the at least one high molecular weight (HMW) ethylene interpolymer has a weight average molecular weight from 10,000 to 1,000,000.
4. The composition of claim 1 , wherein the at least one high molecular weight (HMW) ethylene interpolymer has a weight average molecular weight from 10,000 to 600,000.
5. The composition of claim 1 , wherein the at least one low molecular weight (LMW) ethylene interpolymer has a number average molecular weight from 100 to 1,000, and the at least one high molecular weight (HMW) ethylene interpolymer has a number average molecular weight from 5,000 to 50,000.
6. The composition of claim 1 , wherein the at least one high molecular weight (HMW) ethylene interpolymer has a number average molecular weight from 5,000 to 300,000.
7. The composition of claim 1 , wherein the at least one low molecular weight (LMW) ethylene interpolymer has an Rv from 0.8 to 0.98, and the at least one high molecular weight (HMW) ethylene interpolymer has an Rv from 0.2 to 0.8.
8. The composition of claim 1 , wherein the ratio of the “Rv of the at least one low molecular weight (LMW) ethylene interpolymer” to the “Rv of the at least one high molecular weight (HMW) ethylene interpolymer” is from 1:1 to 5:1.
9. The composition of claim 1 , wherein the at least one low molecular weight (LMW) ethylene interpolymer contains from 0.2 weight percent to 20 weight percent of at least one comonomer, and the at least one high molecular weight (HMW) ethylene interpolymer contains from 0.1 weight percent to 40 weight percent of at least one comonomer.
10. The composition of claim 9 , wherein for both the LMW interpolymer and the HMW interpolymer, each comonomer is independently selected from the group consisting of propylene, 1-butene, 1-pentene, 1-hexene, 3-methyl-1-pentene, 4-methyl-1-pentene, 1-heptene, 1-octene, 1-nonene and 1-decene.
11. The composition of claim 1 , wherein the at least one low molecular weight (LMW) ethylene interpolymer has a lower percentage of comonomer incorporation than the at least one high molecular weight (HMW) ethylene interpolymer.
12. The composition of claim 1 , wherein the composition comprises less than, or equal to, 10 weight percent of the high molecular weight (HMW) ethylene interpolymer, based on the total weight of the composition.
13. An article comprising at least one component formed from the composition of claim 1 .
14. The composition of claim 1 , wherein the composition has a total percent crystallinity according to the following inequality:
percent crystallinity>614*(density in g/cc)−509,
wherein the percent crystallinity is the ((heat of fusion in J/g)/(292 J/g for polyethylene))*100, and wherein the density is that of the composition.