公开(公告)号：US12031046B2

公开(公告)日：2024-07-09

申请号：US17870325

申请日：2022-07-21

Applicant: BRASKEM AMERICA, INC.

Inventor： Michelle K. Sing ,  Hadi Mohammadi ,  Moises Magalhaes Werlang ,  Ana Paula de Azeredo ,  Jacob Fallon ,  Kevin Herrington ,  Collin Azinger

IPC: B33Y70/00 ,  B29C64/153 ,  B33Y10/00 ,  C09D11/037 ,  C09D11/108 ,  B29K23/00 ,  B29K105/00

CPC classification number: C09D11/108 ,  B29C64/153 ,  B33Y10/00 ,  B33Y70/00 ,  C09D11/037 ,  B29K2023/14 ,  B29K2105/0032

Abstract: The invention relates to a sinterable polymer composition, comprising: a random copolymer of propylene and an olefinic comonomer, containing about 2 to 10 wt % olefinic comonomer content, relative to 100 wt % of the random copolymer. The sinterable polymer composition may also contain at least one of a clarifier and a nucleator, and/or at least one additive selected from the group consisting of a primary antioxidant, a secondary antioxidant, an acid scavenger, a peroxide, an enhanced IR energy absorber, a long-term heat agent, and a polyolefin elastomer. The sinterable polymer composition has a melt flow rate from about 1 to 150 g/10 min (230° C./2.16 kg), measured according to ASTM D 1238; a crystallization temperature, Tc, from about 105 to 150° C.; and a xylene solubles content, XS, from about 3% to 40%.

公开(公告)号：US20230142166A1

公开(公告)日：2023-05-11

申请号：US17983593

申请日：2022-11-09

Applicant: BRASKEM AMERICA, INC.

Inventor： Michelle K. Sing ,  Juliana Breda Soares ,  Jacob Fallon ,  Collin Azinger

IPC: C08L23/06

CPC classification number: C08L23/06 ,  C08L2207/062 ,  C08L2207/04 ,  C08L2205/03

Abstract: The invention relates to an additive-manufacture feedstock, comprising an ethylene polymer blend composition having an ethylene polymer having a melt flow index of from 0.1 to 150 g/10 min (190° C./2.16 kg), measured according to ASTM D 1238, and at least one of the following components blended in the ethylene polymer: a polyolefin elastomer, an ethylene-vinyl ester polymer, a fiber, a nucleator or clarifier, or a polypropylene polymer. The additive-manufacture feedstock, when in the form of a printed article, exhibits an improved printability characterized by an improved warpage-resistance rating. The invention also relates to methods of making the additive-manufacture feedstock and methods of 3D printing or additive manufacturing using the additive-manufacture feedstock in various forms.