EX-21.1 4 tse-20221231xex21d1.htm EX-21.1

Exhibit 21.1

SUBSIDIARIES OF TRINSEO PLC

AS OF DECEMBER 31, 2022

Entity Name

Jurisdiction

1.
Trinseo Belgium B.V.

Belgium

2.
Trinseo Operating Belgium B.V.

Belgium

3.
Trinseo Canada ULC

Canada

4.
Styron Synthetic Materials (Shanghai) Company Limited

China

5.
Trinseo Polymers (Zhangjiagang) Company Limited

China

6.
Altuglas International Denmark A/S

Denmark

7.
Trinseo Suomi Oy

Finland

8.
Altuglas International SAS

France

9.
Styron Operating France SAS

France

10.
Trinseo France S.A.S.

France

11.
Trinseo Deutschland Anlagengesellschaft mbH

Germany

12.
Trinseo Deutschland GmbH

Germany

13.
Trinseo Deutschland RE GmbH & Co. KG

Germany

14.
Trinseo Deutschland RE GP GmbH

Germany

15.
Trinseo (Hong Kong) Limited

Hong Kong

16.
Trinseo Materials (Hong Kong) Limited

Hong Kong

17.
Trinseo India Trading Private Limited

India

18.
PT Trinseo Materials Indonesia

Indonesia

19.
PT Trinseo Operating Indonesia

Indonesia

20.
Styron Ireland IBH Limited

Ireland

21.
Trinseo Finance Ireland Unlimited Company

Ireland

22.
Trinseo Ireland Global IHB Limited

Ireland

23.
Trinseo Ireland Holdings Limited

Ireland

24.
Trinseo Services Ireland Limited

Ireland

25.
A.P.I. Applicazioni Plastiche Industriali S.p.A.

Italy

26.
Altuglas S.r.l.

Italy

27.
Styron Operating Italy S.r.l.

Italy

28.
Trinseo Italia S.R.L.

Italy

29.
Trinseo Japan Y.K.

Japan

30.
Trinseo Korea Ltd.

Korea

31.
Trinseo Holding S.à r.l.

Luxembourg

32.
Trinseo Luxco S.à r.l.

Luxembourg

33.
Trinseo Materials Operating S.C.A.

Luxembourg

34.
Altuglas Mexico, S.A. de C.V.

Mexico

35.
Trinseo de México S. de R.L. de C.V.

Mexico

36.
Heathland B.V.

The Netherlands

37.
Styron Netherlands Holding Company B.V.

The Netherlands

38.
Styron Operating Netherlands B.V.

The Netherlands

39.
Trinseo Holding B.V.

The Netherlands

40.
Trinseo Netherlands B.V.

The Netherlands

41.
Styron Poland sp. z.o.o.

Poland

42.
Trinseo Holdings Asia Pte. Ltd.

Singapore

43.
Trinseo Singapore Pte. Ltd.

Singapore

44.
Trinseo Spain S.L.

Spain

45.
Trinseo Sverige AB

Sweden

46.
Styron Europe Holding GmbH

Switzerland

47.
Styron Export Operating GmbH

Switzerland

48.
Trinseo Europe GmbH

Switzerland

49.
Trinseo Export GmbH

Switzerland


50.
Taiwan Trinseo Limited

Taiwan

51.
Styron Operating Kimya Ticaret Limited Sirketi

Turkey

52.
Trinseo Kimya Ticaret Limited Şirketi

Turkey

53.
Trinseo UK Limited

England and Wales

54.
Altuglas LLC

USA – Delaware

55.
Americas Styrenics LLC1

USA – Delaware

56.
Styron AmSty Holdings LLC

USA – Delaware

57.
Trinseo LLC

USA – Delaware

58.
Trinseo Materials Finance, Inc.

USA – Delaware

59.
Trinseo U.S. Holding, Inc.

USA – Delaware

60.
Trinseo U.S. Receivables Company SPV LLC

USA – Delaware

61.
Aristech Surfaces LLC

USA – Kentucky

1 Represents a joint venture company of which the registrant indirectly owns 50% of the voting equity.