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US 12,552,921 B2Granted
Films including post consumer resin
AssigneeDow Global Technologies LLC
InventorsRajen M. Patel, Carol L. Tsai, Daniel G. Abebe, Yongchao Zeng, Teresa P. Karjala, Xiaofei Sun, Jessica L. Rogers, Francis O. Olajide, Jr.
Life of this patent
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Abstract
Provided are films made from polymer blends including post-consumer resin (PCR). The films are formed from a polymer blend that includes a PCR, a low density polyethylene and/or ethylene/carbon monoxide copolymer (ECO copolymer), and a modification agent. The films, which include a PCR, contribute to improved sustainability and in aspects maintain or minimize the reduction of desirable properties, such as elastic recovery.
Claims9
A film made from a polymer blend, the polymer blend comprising:
- (i) from 10 to 70 wt. % of a post-consumer resin (PCR), wherein the PCR comprises low density polyethylene and linear low density polyethylene, has a heat of fusion in the range of from 130 to 170 J/g, has a peak melting temperature (Tm) from 105° C. to 127° C.;
- (ii) from 10 to 87 wt. % of a low density polyethylene, an ethylene/carbon monoxide copolymer (ECO copolymer), or a combination thereof;
- and (iii) from 3 to 25 wt. % of a modification agent;
- wherein the modification agent is an ethylene-based plastomer or elastomer, an ethylene-vinyl acetate, or a combination thereof.
1 more element
Dependencies are inferred from the claim text.