公开(公告)号：US10113039B2

公开(公告)日：2018-10-30

申请号：US15305140

申请日：2015-04-20

Applicant: DSM IP ASSETS B.V.

Inventor： Johannes Hoekstra ,  Rui Zhang

IPC: C08L77/00 ,  C08J5/10 ,  C08J3/22 ,  C08J5/04 ,  C08K7/14 ,  C08K5/20 ,  C08K5/3492

Abstract: The invention relates to a process for producing shaped articles comprising the steps of: —compounding a polymer composition (A) containing a polyamide, a halogen-free melamine based flame retardant and at most 15 wt. % of glass fibers into pellets, compounding a polymer composition (B) containing a polyamide, more than 15 wt. % of glass fibers, and not containing halogen-free melamine based flame retardant into pellets, —producing a mixture comprising the pellets of polymer composition (A) and (B), —molding the mixture comprising the pellets of polymer composition (A) and (B) into shaped articles.

公开(公告)号：US10597534B2

公开(公告)日：2020-03-24

申请号：US15515631

申请日：2015-09-29

Applicant: DSM IP ASSETS B.V.

Inventor： Zhujuan Wang ,  Johannes Hoekstra ,  Pim Gerard Anton Janssen

IPC: C08L77/06 ,  C08K3/08 ,  C08G69/26 ,  C08L77/02 ,  C08K7/14

Abstract: The present invention relates to a thermoplastic composition comprising: a) a polyamide component comprising at least three amide monomer units and b) a stabilizer characterized in that at least one of the at least three amide monomer units is an aliphatic amide monomer unit having a carbon to nitrogen ratio (C/N) equal to, or above 6.5, in that at least two of the at least three amide monomer units are semi-aromatic amide monomer units which polymerized provide at least one semi-crystalline semi-aromatic polyamide having a melting temperature of at least 290° C. as measured by DSC at a heating rate of 10° C./min according to standard ISO 1 1357-3 (2009), and in that the amount of aliphatic amide monomer unit is in the range from 20 to 60 wt. % relative to the total weight of the at least three amide monomer units in the polyamide components and the total amount of semi-aromatic amide monomer units is in the range from 40 to 80 wt. % relative to the total weight of the at least three amide monomer units in the polyamide components and characterized in that the stabilizer is chosen from a copper-containing stabilizer, an iron-containing stabilizer and a stabilizer containing copper and iron.

公开(公告)号：US10577500B2

公开(公告)日：2020-03-03

申请号：US15321406

申请日：2014-06-26

Applicant: DSM IP Assets B.V.

Inventor： Johannes Hoekstra ,  Rudy Rulkens ,  Hans Klaas Dijk,Van

IPC: C08L77/06 ,  C08G69/26 ,  C08G69/28 ,  C08G69/30 ,  C08K7/14 ,  C08K3/40 ,  C08L77/00 ,  C08G81/00 ,  B29B7/00 ,  B29B7/82 ,  B29C45/00 ,  B29C45/72 ,  B29K77/00

Abstract: The invention relates to a process for the preparation of a semi-crystalline semi-aromatic polyamide copolymer (Co-PA) having a melting temperature (Tm-Co-PA) of at least 300° C., comprising steps of (a) preparing a first semi-crystalline semi-aromatic polyamide (A), having a melting temperature (Tm-A) of at least 310° C.; and consisting of repeat units derived from 45-50 mol % terephthalic acid; 47.5-50 mol % of diamine; and 0-5 mol % of one or more other amine and/or acid group containing components; the mol % being relative to the total molar amount of said amine and/or acid group containing components; and wherein poly-amide (A) is prepared by a process comprising direct solid-state polymerization of a diamine-dicarboxylic acid salt of the terephthalic acid and the diamine; (b) providing a polyamide (B), being an amorphous polyamide having a glass transition temperature (Tg-B) below Tm-A, or a second semi-crystalline polyamide having a melting temperature (Tm-B) below Tm-A, or a combination of the amorphous polyamide and the second semi-crystalline polyamide; (c) heating and melt-mixing polyamide (A) and polyamide (B), thereby obtaining a miscible polymer melt with a temperature (T-melt) above Tm-A; and (d) cooling the melt to a temperature below the solidification temperature of the melt, thereby obtaining a solid semi-crystalline semi-aromatic polyamide copolymer.

公开(公告)号：US10377897B2

公开(公告)日：2019-08-13

申请号：US15311346

申请日：2015-05-18

Applicant: DSM IP ASSETS B.V.

Inventor： Raul Marcelino Perez Graterol ,  Franciscus Gerardus Henricus Van Duijnhoven ,  Franciscus Wilhelmus Maria Gelissen ,  Johannes Hoekstra

IPC: C08L77/00 ,  C08L77/02 ,  B41M5/26 ,  C08J3/22 ,  C08J3/20 ,  C08K3/22 ,  C08K5/098 ,  C08K5/3492 ,  C08K7/14 ,  C08L77/06

Abstract: The invention relates to a laser-markable polyamide composition comprising: a first phase comprising Sb2O3 and an aliphatic polyamide with an amide density AD1, and a second phase comprising an aliphatic polyamide with an amide density AD2, wherein AD1-AD2 is at least 0.01, and wherein the amount of Sb2O3 is between 0.1 and 5 wt %, a halogen-free flame retardant in an amount of between 1 to 25 wt %, wherein the amount in weight percentage are based on the total amount of composition. The invention also relates to a process for preparing a laser-markable polyamide composition, as well as laser-marked products comprising the composition.

公开(公告)号：US10017628B2

公开(公告)日：2018-07-10

申请号：US14904255

申请日：2014-07-09

Applicant: DSM IP ASSETS B.V.

Inventor： Johannes Hoekstra ,  Pim Gerard Anton Janssen

IPC: C08K3/00 ,  C08K5/5313 ,  C08G69/26 ,  C08L77/06 ,  C08K7/02 ,  C08K3/013

CPC classification number: C08K5/5313 ,  C08G69/26 ,  C08K3/013 ,  C08K7/02 ,  C08L77/06

Abstract: The invention relates to a flame retarded thermoplastic moulding composition comprising (A) a polyamide (B) a flame retardant system comprising a metal salt of a phosphinic acid and/or a diphosphinic acid; and either (C) a fibrous reinforcing agent; or (D) an inorganic filler; or a combination of (C) and (D), wherein (A) consists primarily of a semi-crystalline semi-aromatic polyamide (A1) with a melting temperature of at least 310° C. and consisting of repeat units, predominantly derived from terephthalic acid and diamines selected from C2-C8 diamines and having a molar average number of carbon atoms of at most 7.

公开(公告)号：US20140371357A1

公开(公告)日：2014-12-18

申请号：US14368150

申请日：2012-12-11

Applicant: DSM IP ASSETS B.V.

Inventor： Johannes Hoekstra ,  Josien Krijgsman ,  Rui Zhang

IPC: C08K5/3492 ,  C08K7/14 ,  C08K5/5313

CPC classification number: C08K5/34922 ,  C08K5/3492 ,  C08K5/5313 ,  C08K7/14 ,  C08L77/06

Abstract: The invention relates to plastic component for use as a live part in unattended household appliances, complying with IEC 60335 and/or VDE approval for use in unattended household appliances, wherein the plastic component is made from a halogen free flame retardant polymer composition comprising (A) a thermoplastic polyamide polymer; (B) 10-40 wt. % of glass fibers; (C) 10-40 wt. % of melam; and (D) 0-15 wt. % of a halogen free flame retardant; wherein the wt. % are relative to the total weight of the composition; with the proviso that when the polyamide or polyamides in component (A) consist of monomeric units comprising less than 10 mole % of aromatic units, relative to the total molar amount of the monomeric units, the amount of melam (C) is in the range of 15-40 wt. %.

Abstract translation: 本发明涉及用于无人值守的家用电器中的带电部件的塑料部件，其符合IEC 60335和/或VDE批准用于无人看管的家用电器，其中塑料部件由无卤阻燃聚合物组合物制成，该组合物包含（A ）热塑性聚酰胺聚合物; （B）10-40重量％ ％玻璃纤维; （C）10-40重量％ 百里香 和（D）0-15wt。 ％的无卤阻燃剂; 其中wt。 ％相对于组合物的总重量; 条件是当组分（A）中的聚酰胺或聚酰胺由包含少于10摩尔％芳族单元的单体单元相对于单体单元的总摩尔量组成时，二聚氰胺（C）的量在该范围内 为15-40重量％ ％。