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：US20140335985A1

公开(公告)日：2014-11-13

申请号：US14367522

申请日：2012-12-11

Applicant: DSM IP Assets B.V.

Inventor： Zhujuan Wang ,  Michael Hubertus Helena Meuwissen ,  Roy Antoine Hendrikus Wilhelmus Proost

IPC: F16H7/18 ,  F16H7/08

CPC classification number: F16H7/18 ,  F16H7/08 ,  F16H2007/185

Abstract: The invention relates to a sliding element for use in a chain transmission apparatus, comprising a sliding contact section for engagement in sliding contact with a chain, wherein the sliding contact section consists of a plastic material comprising a matrix polymer and dispersed therein graphite platelets comprising platelet particles having a thickness of at most 250 nm. The invention relates to an engine comprising a first sliding element in sliding contact with a second element, wherein at least a sliding contact section is made of such a plastic material comprising such thin graphite platelets. The invention further relates to a chain transmission apparatus, comprising a chain, and a sliding element comprising (i) a sliding contact section engaged in sliding contact with the chain and (ii) a main body reinforcing and supporting the sliding contact section, wherein the sliding contact section consists of such a plastic material.

Abstract translation: 本发明涉及一种用于链条传动装置的滑动元件，其包括用于与链条滑动接触的滑动接触部分，其中滑动接触部分由包含基质聚合物的塑料材料组成并分散在其中的石墨片 具有至多250nm厚度的颗粒。 本发明涉及一种发动机，其包括与第二元件滑动接触的第一滑动元件，其中至少滑动接触部分由包括这种薄的石墨片晶的塑料材料制成。 本发明还涉及一种包括链条和滑动元件的链条传动装置，该滑动元件包括：（i）与链条滑动接触的滑动接触部分，和（ii）加强并支撑滑动接触部分的主体，其中， 滑动接触部分由这种塑料材料组成。

公开(公告)号：US11377554B2

公开(公告)日：2022-07-05

申请号：US15865107

申请日：2018-01-08

Applicant: DSM IP ASSETS B.V.

Inventor： Roy Antoine Hendrikus Wilhelmus Proost ,  Michael Hubertus Helena Meuwissen ,  Zhujuan Wang

IPC: C08L77/02 ,  C10M149/18 ,  C08L77/06 ,  C08K3/04 ,  C08K3/34 ,  C08K3/013 ,  C10N30/06 ,  C10N40/02 ,  C10N40/04 ,  C10N40/25 ,  C10N50/00 ,  C08K3/01

Abstract: The invention relates to a chain guide, respectively a chain tensioner for use in a lubricated sliding system, comprising a surface layer or bearing or comprising a sliding element comprising a surface layer, the surface layer being mainly made of a polymeric material containing a matrix polymer and optionally other components dispersed in said matrix polymer, wherein the matrix polymer consists of a semi-crystalline polyamide (SCPA) having a tensile modulus at 140° C. of at least 800 MPa (measured by the method according to ISO 527-1A). The invention also relates to a power train drive system comprising an engine, a transmission differential and a drive shaft system, a drive chain and a plastic component comprising a sliding element in contact with the lubricated drive chain, wherein the chain guide, the chain tensioner, respectively the sliding element has a coefficient of friction (CoF), measured in lubrication oil at 140° C. at a nominal contact pressure of 1 MPa and a speed of 1 m/s, of at most 0.07.

公开(公告)号：US10920026B2

公开(公告)日：2021-02-16

申请号：US16336161

申请日：2017-09-27

Applicant: DSM IP Assets B.V.

Inventor： Zhujuan Wang

IPC: C08J5/04 ,  C08L77/06 ,  C08G73/10 ,  C08J3/20 ,  B29C45/27 ,  B29K77/00 ,  B29K309/08

Abstract: The present invention relates to a polymer composition, consisting of (A) 30-90 wt. % of at least one thermoplastic polymer comprising at least a semi-crystalline semi-aromatic polyamide (SSPA-1) in an amount in the range of 30-90 wt. %; (B) 10-70 wt. % of at least one reinforcing agent, and (C) 0-25 wt. % of one or more other components; wherein the SSPA-1 consists of (A-1-a) 90-100 wt. % of repeat units derived from (i) an aromatic dicarboxylic acid and (ii) diamines, and (A-1-b) 0-10 wt. % of repeat units derived from other monomers; the diamines (ii) consist of 80-95 mole % of a linear aliphatic diamine, 5-20 mole % of 2-methyl-pentamethylene diamine, and 0-10 mole % of other diamines; and the SSPA-1 has a melting temperature (Tm) of at least 300° C. The invention further relates to a molded part made of the composition, a process for making the composition and a process for making the molded part.