公开(公告)号：US20210053276A1

公开(公告)日：2021-02-25

申请号：US16958302

申请日：2018-12-21

Applicant: Braskem America, Inc.

Inventor： Alessandro Bernardi ,  Alexandre di Pintor da Luz ,  Ana Paula de Azeredo ,  Leonardo Batista Ito ,  Juliana Breda Soares ,  Michelle K. Sing

IPC: B29C64/118 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00

Abstract: A method of manufacturing an article using an additive manufacturing technique may include melting a polymer composition; activating the polymer composition with one or more activating agents; and depositing the molten polymer composition to manufacture the article. An article may include a plurality of printed layers of a polyolefin composition, wherein the polyolefin composition is prepared from the deposition of an activated polyolefin composition, wherein the polyolefin composition is activated by one or more activating agents.

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%.