Process for polymerizing ethylene in a multi-stage polymerization process

A Krallis, V Kanellopoulos, P Castro… - US Patent …, 2024 - Google Patents
The present invention is concerned with a process for polymerizing ethylene or
copolymerizing ethylene and at least one alpha-olefin comonomer in the presence of a …

Polyolefin composition providing improved contrast of laser marks

B Kulshreshtha, D Yalalov, F Costa - US Patent 12,049,552, 2024 - Google Patents
The present invention is directed to a polyolefin composition which provides improved
contrast of laser marks. It is suitable for many applications where precise marking of a …

Article comprising a fiber reinforced polypropylene composition

M Jerabek, W Stockreiter, T Lummerstorfer - US Patent 11,827,758, 2023 - Google Patents
US11827758B2 - Article comprising a fiber reinforced polypropylene composition - Google
Patents US11827758B2 - Article comprising a fiber reinforced polypropylene composition …

Multilayer element

J Oderkerk, D Yalalov, Q Dou, F Costa - US Patent 11,504,949, 2022 - Google Patents
The present invention relates to a multilayer element (LE) and to a multilayer laminated
glass layer element (GLE2), the use of the multilayer element (LE) and the multilayer …

Foamed polypropylene composition

S Kahlen, D Mileva, G Grestenberger, A Fuchs… - US Patent …, 2024 - Google Patents
The present invention is directed to a polypropylene composition (C) a melt flow rate MFR 2
(230 C.) determined according to ISO 1133 in the range of 15 to 40 g/10 min, the use of said …

Aldehyde content reduction process and recycled polyolefin with low aldehyde content

S Vijay - US Patent 11,518,863, 2022 - Google Patents
Disclosed is a process for treating plastic waste chips containing a blend of polypropylene
and polyethylene in an amount of at least 83.0 wt.-% to less than 100 wt.-% and further …

Multimodal polyethylene

FP Valencia Sr, C Hendriksen - US Patent App. 17/622,232, 2022 - Google Patents
The invention relates to an ethylene polymer comprising a low molecular weight component
and a high molecular weight component, wherein the ethylene polymer has a density of 955 …

High speed cross-linking of grafted plastomers

O Prieto, J Oderkerk, JJ Ruskeeniemi… - US Patent …, 2024 - Google Patents
The present invention discloses a process for providing a cross-linked composition, the
process comprising the steps of (a) providing an ethylene-α-olefin plastomer having—a …

Long-chain branched propylene polymer composition

J Wang, M Gahleitner, K Bernreitner… - US Patent …, 2023 - Google Patents
The present invention relates to a propylene polymer composition comprising a long chain
branched propylene polymer, wherein said propylene polymer composition has a) a melt …

Process for preparation of polyethylene

JD Guzman-carrazco, M Tammadoni… - US Patent App. 17 …, 2022 - Google Patents
The invention relates to a process for the preparation of an ethylene-based polymer, the
process comprising: a) suspen sion polymerizing ethylene and an optional comonomer to …