公开(公告)号：US20220275180A1

公开(公告)日：2022-09-01

申请号：US17631107

申请日：2020-07-30

Applicant: Dow Global Technologies LLC

Inventor： Jong Young Lee ,  Yifan Dong ,  Barry Alan Morris ,  Teresa P. Karjala ,  Eva-Maria Kupsch

IPC: C08L23/06 ,  C08L23/08 ,  C08L33/08 ,  C09D123/06 ,  C09D123/08 ,  C09D133/10 ,  C09D133/08 ,  C08L33/10

Abstract: Polymer blends, films, and coated substrates that include the polymer blends. The polymer blends include at least 90% by weight low density polyethylene polymer and from 1 to 10% by weight ionomer. The LDPE polymer has a melt index (I2)from 2 g/10 mins to 6 g/10 mins, and a molecular weight distribution from 5 to 11 as determined by a conventional gel permeation chromatography method. The ionomer includes an ethylene acid copolymer, in which from 15% to 70% of acid groups are neutralized by sodium cation based on the total number of acid groups in the acid copolymer. The ethylene acid copolymer is the polymerized reaction product of: at least 50% by wt. ethylene, from 2 wt. % to 40 wt. % of monocarboxylic acid monomer, and from 0 to 20 wt. % of alkyl acrylate, based on the total wt. % of the monomers present in the ethylene acid copolymer.

公开(公告)号：US12195610B2

公开(公告)日：2025-01-14

申请号：US17631107

申请日：2020-07-30

Applicant: Dow Global Technologies LLC

Inventor： Jong Young Lee ,  Yifan Dong ,  Barry Alan Morris ,  Teresa P. Karjala ,  Eva-Maria Kupsch

IPC: C08L23/06 ,  C08L23/08 ,  C08L33/08 ,  C08L33/10 ,  C09D123/06 ,  C09D123/08 ,  C09D133/08 ,  C09D133/10

Abstract: Polymer blends, films, and coated substrates that include the polymer blends. The polymer blends include at least 90% by weight low density polyethylene polymer and from 1 to 10% by weight ionomer. The LDPE polymer has a melt index (I2)from 2 g/10 mins to 6 g/10 mins, and a molecular weight distribution from 5 to 11 as determined by a conventional gel permeation chromatography method. The ionomer includes an ethylene acid copolymer, in which from 15% to 70% of acid groups are neutralized by sodium cation based on the total number of acid groups in the acid copolymer. The ethylene acid copolymer is the polymerized reaction product of: at least 50% by wt. ethylene, from 2 wt. % to 40 wt. % of monocarboxylic acid monomer, and from 0 to 20 wt. % of alkyl acrylate, based on the total wt. % of the monomers present in the ethylene acid copolymer.

公开(公告)号：US20220017814A1

公开(公告)日：2022-01-20

申请号：US17295115

申请日：2019-10-31

Applicant: Dow Global Technologies LLC

Inventor： Praveen Agarwal ,  Yifan Dong ,  Arjun Raghuraman ,  Aayush Shah ,  Juan Carlos Medina ,  Kshitish Patankar ,  Mark F. Sonnenschein

IPC: C09K8/80 ,  C09K8/68

Abstract: Coated proppant particles are prepared from a coating composition that includes at least one polyisocyanate and an isocyanate trimerization catalyst. The coating composition preferably is devoid of an effective amount of a urethane, urea and carbodiimide catalyst. The coating composition cures rapidly at moderate temperatures, and bonds to itself well under conditions of heat and pressure as are experienced by the particles in subterranean formations.

公开(公告)号：US20240059876A1

公开(公告)日：2024-02-22

申请号：US18260278

申请日：2022-02-21

Applicant: Dow Global Technologies LLC

Inventor： Yifan Dong ,  Santosh S. Bawiskar ,  Teresa P. Karjala ,  Pradeep Jain ,  Lori L. Kardos ,  Michael B. Biscoglio ,  John P. O'brien ,  Daniel W. Baugh, III

IPC: C08L23/06 ,  C08J3/28

CPC classification number: C08L23/06 ,  C08J3/28 ,  C08L2203/14 ,  C08L2203/16 ,  C08L2203/30 ,  C08L2205/025 ,  C08L2207/062 ,  C08L2207/066

Abstract: Irradiation of low-density polyethylene resins with an electron beam produces modified polyethylene resins that have significantly improved melt strength and retain useful melt-index and have few cross-linked gels, if the starting LDPE resin and the level of irradiation are properly selected.