公开(公告)号：US12012527B2

公开(公告)日：2024-06-18

申请号：US17261100

申请日：2019-07-15

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Roberta Marchini ,  Silvia Guerra ,  Stefano Pasquali ,  Ankur Rastogi ,  Stefano Spataro

IPC: C09J123/20 ,  C08L23/20 ,  C09J123/08 ,  C08L23/08

CPC classification number: C09J123/20 ,  C08L23/0815 ,  C08L23/20 ,  C09J123/0815

Abstract: A polyolefin-based hot melt adhesive composition made from or containing



(A) 25-75 wt. % of a copolymer of butene-1 with a Melt Flow Rate, measured according to ISO 1133 (190° C., 2.16 kg), higher than 1500; and
(B) 75-25 wt. % of at least one additional component selected from the group consisting of waxes, resins, plasticizers, additional polymers and mixtures thereof,
wherein the amounts of A) and B) are referred to the total weight of A)+B).

公开(公告)号：US20230287203A1

公开(公告)日：2023-09-14

申请号：US18018491

申请日：2021-07-28

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Silvia Guerra ,  Roberta Marchini ,  Stefano Spataro

IPC: C08L23/20 ,  C08K3/36

CPC classification number: C08L23/20 ,  C08K3/36 ,  C08K2201/003 ,  C08L2203/18

Abstract: A butene-1 polymer composition made from or containing:



A) from 97.5% to 99.85% by weight, with respect to the total weight of A) and B), of a butene-1 polymer or polymer composition;
B) from 0.15% to 2.5% by weight, with respect to the total weight of A) and B), of talc in form of particles having a volume-based particle diameter distribution Dv (0.95) of 45 μm or lower; and, optionally
C) from 0.01% to 2% by weight of an ethylene polymer,

wherein the amount of C) being referred to the total weight of A)+B)+C), amounts to 100%.

公开(公告)号：US10759933B2

公开(公告)日：2020-09-01

申请号：US16341584

申请日：2017-10-05

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Paola Massari ,  Andrea Felisati ,  Marco Izzi ,  Claudio Cavalieri ,  Marco Ciarafoni ,  Silvia Guerra ,  Roberto Pantaleoni ,  Federica Malizia

IPC: C08L23/12 ,  C08K5/00 ,  C08K5/098 ,  C08K5/1575 ,  C08K5/56 ,  C08L23/14

Abstract: A nucleated propylene polymer composition made from or containing: A) a propylene homopolymer; B) a copolymer of propylene with ethylene derived units; the nucleated composition having a fraction soluble in xylene at 25° C. between 9.0 and 21.0 wt %, an intrinsic viscosity of the fraction soluble in xylene at 25° C. between 1.0 and 1.9 dl/g, a total melt flow rate between 1.5 and 5 g/10 min and the value of the relation (I): 22.5+0.2*MFR−1.2*Xs+0.2*IV  (I) is higher than 5.9; wherein MFR is the melt flow rate of the nucleated composition; IV is the intrinsic viscosity of the fraction soluble in xylene at 25° C.; and Xs is the fraction soluble in xylene at 25° C., the amount of A+B is equal to 100 wt %, and the nucleating agent is selected from the group consisting of aromatic or aliphatic carboxylic acids, aromatic metal phosphates, sorbitol derivatives and talc.