Dow Global Technolgoies LLC

Rohm and Haas Company

Xiaosong Wu

Colin Li Pi Shan

Kim Louis Walton

Tao Han

Brian W Walther

Yong Chen

Yunfeng Yang

Ronald J Weeks

Juan C Tuberquia

Jose Manu Rego

Stefan Ultsch

Guang Ming Li

Lamy J Chopin, Iii

Xianmin Xu

Daniel W Himmelberger

Rennisha R Wickham

Aleksandar Stoiljkovic

Varun Thakur

Rajen M Patel

Gary Robert Marchand

Kalyan Sehanobish

Morgan Mark Hughes

Jeffrey C Munro

Yushan Hu

Colin LiPiShan

Raymond Lynn Laakso, Jr

Cristina Serrat

Santosh S Bawiskar

Michael D Read

Robert Thomas Johnston

Vivek Kalihari

Bo Lv

John W Garnett, Iv

Shaun Parkinson

Bo Lyu

Yuming Lai

Libo Du

Vinita Yadav

Lizhi Liu

Dana R Breed

Miguel Alberto De Jesus Prieto

Tianzi Huang

Ron Weeks

Guangming Li

Stacy L Pesek

Colin Lipishan

Chuan-Yar Lai

Manu Rego

Peter Yap

Peter Kwok-Wai Fung

Eric Hui Chin Tu

Cody W Lawrence

Lamy J Iii Chopin

Jr Raymond L Laakso

Robert T Johnston

Jose M Rego

John W Garnett

Iii Lamy J Chopin

Cyrille Billouard

The present disclosure provides a composition. In an embodiment, the composition includes a non-irradiated ethylene/propylene/non-conjugated polyene terpolymer (nr-terpolymer) and a branched ethylene/propylene/non-conjugated polyene terpolymer (b-terpolymer). The b-terpolymer has: (A) a Mooney viscosity (ML 1+4 @ 125° C.) from 35 MU to 120 MU; (B) a rheology ratio from 55 to 110; and (C) a phase angle δ from 20° to 39°.

EPDM blends with long chain branching

The invention provides a composition comprising an interpolymer composition, and wherein the interpolymer composition comprises a first ethylene/alpha-olefin/nonconjugated polyene interpolymer; and a second ethylene/alpha-olefin/nonconjugated polyene interpolymer; and wherein the interpolymer composition has a Mooney Viscosity (ML(1+4), 125° C.)<50, and a Rheology Parameter, ((RR/Mn)×1000)≥0.60.

Polymer compositions for extruded profiles

A composition comprising the following: a) a first ethylene/alpha-olefin/non-conjugated polyene interpolymer that has a Mooney Viscosity ≥50; b) a second ethylene/alpha-olefin/non-conjugated polyene interpolymer that has a Mooney Viscosity <50; c) a calcined filler formed from a filler composition comprising a kaolinite.

Polymer compositions with excellent electrical and mechanical properties

The present disclosure relates to a curable composition comprising: (A) a polyolefin; (B) a fumed alumina; (C) a silane compound; (D) a UV stabilizer; and, optionally, (E) a crosslinking agent, where the curable composition demonstrates improved electrical properties. The present disclosure further relates to a crosslinked polymer composition that is the reaction product of the curable composition, where improved electrical properties are demonstrated as well.

Polyolefin compositions having improved electrical properties

The present disclosure relates to a curable composition comprising: (A) a polyolefin; (B) siliceous earth; (C) a crosslinking agent; (D) a crosslinking co-agent; and, optionally, (E) an additive component, where the curable composition demonstrates improved electrical properties. The present disclosure further relates to a crosslinked polymer composition that is the reaction product of the curable composition, where improved electrical properties are demonstrated as well.

Polyolefin compositions having improved volume resistivity

Polymer compositions include an interpolymer of ethylene, an α-olefin, and a nonconjugated polyene; and from 10% to 40% by weight oil. The polymer composition has a Mooney viscosity from 20 to 70. The interpolymer may include from 66% to 75% by weight monomer units derived from ethylene; and from 0.5% to 10% by weight monomer units derived from the nonconjugated polyene. The neat interpolymer may have: a weight-average molecular weight Mw from 250 kDa to 300 kDa; a Mooney viscosity from 50 to 200; a rheology ratio V/Vless than 30; a ratio of molecular weight to low-shear viscosity Mw/Vgreater than 4.0; a polydispersity index from 2.0 to 3.5; and a tan δ at 0.1 rad/sand 190° C. greater than 2.0. The polymer compositions may be in the form of pellets having desirable flow characteristics. Thermoplastic vulcanizates may include the polymer compositions. Articles may include the thermoplastic vulcanizates.

Oil-extended pellet form ethylene alpha-olefin diene interpolymers for thermoplastic vulcanizates

The present disclosure provides a composition. In an embodiment, the composition includes a neat ethylene/propylene/nonconjugated polyene interpolymer. The neat ethylene/propylene/nonconjugated polyene interpolymer includes from greater than 0 wt % to 6.0 wt % nonconjugated polyene. The neat ethylene/propylene/nonconjugated polyene interpolymer has the following properties: (i) a molecular weight (Mw) from 240,000 to 270,000; (ii) a Mooney viscosity (ML (1+4), 125° C.) from 80 to 85; (iii) a rheology ratio (RR) from 35 to 65; (iv) a Mw/Mn from 2.2 to 3.5; (v) a tan delta ratio from 0.6 to 0.9; and (vi) an absolute tan delta slope from 5.0 to less than 10.0.

Ethylene/propylene/nonconjugated diene interpolymer composition

A composition comprising the following components: A) a first ethylene/alpha-olefin interpolymer with a melt index I2A; B) a second ethylene/alpha-olefin interpolymer with a melt index I2B; and wherein the difference in melt index (I2): (I2A−I2B)≥400, and wherein I2B≤100 g/10 min; C) a filler, and wherein the filler is present in an amount ≥50 wt %, based on the weight of the composition; D) a tackifier; and wherein the melt viscosity, at 165 C, of the composition, excluding the filler (component C), is ≤30,000 cP.

Olefin-based polymer compositions for flooring applications

A first composition comprising a first ethylene/α-olefin/diene interpolymer and a second ethylene/α-olefin interpolymer, and wherein the first composition comprises from 0.1 to 1.0 wt % diene, based on the weight of the first composition, and wherein the first composition comprises from 40 to 70 wt % ethylene, based on the weight of the first composition.

Ethylene/alpha-olefin interpolymer compositions with improved long term heat aging performance

The present disclosure provides a composition. The composition can be formed into a foam composition. In an embodiment, the composition includes a neat ethylene/propylene/nonconjugated polyene interpolymer. The neat ethylene/propylene/nonconjugated polyene interpolymer includes from greater than 6.0 wt % to 15.0 wt % nonconjugated polyene. The neat ethylene/propylene/nonconjugated polyene interpolymer has the following properties: (i) a molecular weight (Mw) from 240,000 to 270,000; (ii) a Mooney viscosity (ML (1+4), 125° C.) from 85 to 95; (iii) a rheology ratio (RR) from 35 to 65; (iv) a Mw/Mn from 2.2 to 3.5; and (v) Mw<1389.6 [g/mole] MV+140,000 g/mol wherein Mw is the weight average molecular weight and MV is the Mooney Viscosity (ML 1+4, 125° C.). MV is the Mooney Viscosity (ML 1+4, 125° C.), and Mw is the weight average molecular weight, as determined by conventional GPC.

A composition comprising at least the following components: A) one or more ethylene/alpha-olefin interpolymers, which comprise &#x2264;3.5 wt % of a non-conjugated diene, based on the weight of the one or more ethylene/alpha-olefin interpolymers; B) an acid acceptor selected from the following: MgO, ZnO, or combination thereof.

Ethylene/alpha-olefin interpolymer compositions with improved continuous high temperature resistance

The present disclosure includes a composition that includes an ethylene/&#x3b1;-olefin random copolymer having density of 0.890 g/cmor less, a melting point of 100&#xb0; C. or less, and a melt index from 0.2 g/10 min to 8.0 g/10 min, a styrenic block copolymer comprising from 1 wt % to less than 50 wt % units of styrene, a tackifier, and an oil. The composition may exhibit an overall melt index of the composition of from 2 g/10 min to 15 g/10 min. The composition can be used as an adhesive in some embodiments. The present disclosure also includes multilayer films that include the composition, which may provide reclose functionality to the multilayer film. The multilayer films that include the composition may provide low initial opening force and improved reclose adhesion through multiple reclose cycles. The present disclosure also includes various types of reclosable packaging articles that include the multilayer films and adhesive compositions.

Compositions and multilayer films for reclosable packaging

The present disclosure is directed to a process for producing thermoplastic polyolefin roofing membrane. The process includes directly adding components of a high-load flame retardant TPO formulation to a counter-rotating twin screw extruder. The process includes extruding the formulation with counter-rotation of the twin screws and forming a TPO roofing membrane having a tensile strength of greater than 10 MPa and a flame retardance of rating of classification D as measured in accordance with EN ISO 11925-2, surface exposure test.

Production of TPO roofing membrane via counter-rotating extrusion

The present disclosure provides a composition. In an embodiment, the composition includes: The composition is suitable for use as a pressure sensitive adhesive layer in a reclosable packaging structure.

Adhesive composition for reclosable multi-layer film

A composition comprising (A) from 10 wt % to 90 wt % of a polymeric ethylene ionomer; (B) from 10 wt % to 40 wt % of a propylene component including at least one propylene based polymer having a propylene content of at least 50.0 wt %, based on the total weight of the propylene based polymer, and a melt flow rate from 0.5 g/10 min to 200.0 g/10 min (according to ASTM D-1238 at 230&#xb0; C./2.16 kg); and (C) from 5 wt % to 20 wt % of a crystalline block composite.

Polyolefin blends including crystalline block composites for PVC-free wear layers

Growing community of inventors

Sugar Land, TX, United States of America

Xiaosong Wu