PP K9928H — High-Flow Impact Copolymer Polypropylene for Injection Molding

K9928H is an impact copolymer polypropylene (ICP) resin produced by Dushanzi Petrochemical Company, a PetroChina subsidiary operating one of China’s largest polypropylene units at 550,000 tonnes per year.

With a melt flow rate of 28.8 g/10min, the grade targets thick-wall injection molding applications requiring dimensional stability, low warpage, and retained impact performance at low temperatures — primarily automotive modified compounds, washing machine inner drums, and home appliance housings.

Description

Dushanzi Petrochemical manufactures K9928H on the Innovene gas-phase horizontal stirred-bed process, one of the most established technologies for producing impact copolymer PP. Propylene and ethylene are copolymerized under a Ziegler-Natta catalyst system, with hydrogen controlling molecular weight distribution. The process delivers consistent pellet quality against internal standard Q/SY DS112-2017, with zero colored particles and ash content below 0.03%.

The MFR of 28.8 g/10min positions K9928H in the high-flow ICP bracket — processable on conventional injection machines without elevated barrel temperatures or plasticizer additions. Barrel temperatures of 160–240°C and melt temperatures of 190–220°C are typical for this grade. Mold designers specifying wall sections above 3mm will find the combination of flowability and stiffness (flexural modulus: 1.32 GPa) adequate for the dimensional requirements of large structural parts.

Impact retention at low temperature is a qualified performance characteristic, not a marketing claim. K9928H delivers 115.1 J/m at 23°C and 63.5 J/m at −20°C under Izod test protocol (Q/SY DS 0517). For automotive interior and exterior components, cold-weather impact performance is a qualification gate that K9928H meets without requiring secondary toughening additives. Tensile yield stress at 23.6 MPa supports structural load requirements across appliance drum assemblies and bumper substrates.

Yellow index at −3.6 means the base resin carries a slight blue-white cast. Parts destined for pigmented or painted surfaces proceed without visible yellowing penalty. Ash content at 0.0278% confirms minimal catalyst residue — a practical indicator of pellet cleanliness relevant to downstream compounders monitoring char formation in subsequent processing steps.

BASTONE sources K9928H through its established trading platform with PetroChina and China's top-3 petrochemical producers. Each shipment carries full Certificate of Analysis documentation traceable to the Dushanzi production batch, covering all properties specified under Q/SY DS112-2017. COA, packing list, and customs documentation are provided as standard.

Factory and Activities

PP K9928H — High-Flow Impact Copolymer Polypropylene for Injection Molding - BASTONE Petrochem

Specifications

PP K9928H impact copolymer polypropylene resin pellets
PP K9928H impact copolymer polypropylene resin pellets, Dushanzi Petrochemical, KUNLUN grade.

General Information

Property Detail
Product Name PP K9928H
Polymer Type Impact Copolymer Polypropylene (ICP)
CAS Number 9003-07-0
HS Code 3902.10
Manufacturer Dushanzi Petrochemical Company (PetroChina)
Production Capacity 550,000 t/yr PP unit
Production Process Innovene gas-phase horizontal stirred-bed
Catalyst System Ziegler-Natta
Execution Standard Q/SY DS112-2017
Appearance Natural-color pellets; zero colored particles; no impurities

Technical Properties

Property Value Unit Test Method
Colored particles 0 pcs/kg SH/T 1541-2006
Oversized/undersized pellets 0.4 g/kg SH/T 1541-2006
Melt Flow Rate (MFR) 28.8 g/10min Q/SY DS 0513
Tensile Strength at Yield 23.6 MPa Q/SY DS 0515
Flexural Modulus 1.32 GPa Q/SY DS 0516
Impact Strength, Izod (23°C) 115.1 J/m Q/SY DS 0517
Impact Strength, Izod (−20°C) 63.5 J/m Q/SY DS 0517
Yellow Index −3.6 Q/SY DS 0514
Ash Content 0.0278 % GB/T 9345.1-2008

Recommended Processing Conditions

Grade Barrel Temperature (°C) Melt Temperature (°C)
K9928H 160–240 190–220

*Processing parameters are indicative. Final settings depend on machine configuration, part geometry, and tooling.*

Applications

Automotive injection molding application
Automotive injection molding application: K9928H processing into bumper substrates and structural components.

K9928H was developed for thick-wall injection-molded components where long flow paths and demanding service conditions must be met in a single base resin. Washing machine inner drums are a primary outlet: the geometry demands consistent wall formation across deep cylindrical sections, and the high MFR of 28.8 g/10min ensures complete fill without requiring elevated injection pressures that could induce residual stress and warpage. The low-warpage performance documented in the product specification is directly relevant here — inner drum assemblies must hold dimensional tolerances that allow proper bearing alignment and drum clearance throughout the appliance's service life.

Home appliance housings for large white goods represent a natural extension of the same property set. Large outer panels and structural casings are warpage-sensitive: shrinkage variation across thick walls produces parts that miss assembly tolerances or require secondary correction. The flexural modulus of 1.32 GPa gives enough in-part rigidity to allow wall geometry optimization without sacrificing structural performance, while the high flow rate supports the cavity fill consistency that large-tool injection requires.

Automotive modified compounds consume K9928H as a base resin for bumper fascias, door trim substrates, and interior structural panels. Compounders blending ICP PP with rubber, talc, or glass fiber use this grade because the high MFR provides processing latitude across different compound formulations, and the inherent ICP toughness reduces the elastomer loading needed to meet cold-impact targets. The −20°C impact strength of 63.5 J/m gives formulators headroom before compounding begins.

Why Source K9928H Through BASTONE

Full COA documentation and palletized export-ready shipment
Full COA documentation and palletized export-ready shipment of PP K9928H from BASTONE trading platform.

BASTONE Petrochem maintains active distribution relationships with China's top-3 petrochemical producers — SINOPEC, PetroChina, and CNOOC — through its export platform, Zhejiang Bastone Technology Co., Ltd. K9928H originates from the Dushanzi Petrochemical complex in Xinjiang, one of PetroChina's primary polymer production sites, and BASTONE's sourcing pipeline into Dushanzi gives buyers allocated supply access rather than dependence on spot availability.

Documentation quality reflects the parent company's manufacturing background. BASTONE's group operates 4 production sites and an R&D center, which means the export team understands what technically complete supply documentation looks like. Every K9928H shipment includes property testing against Q/SY DS112-2017, test method citations, and batch traceability — not a reformatted template with generic values.

BASTONE's diversified product range across polyolefins, organic chemicals, fuel additives, and drilling chemicals means buyers who need K9928H alongside other material categories can consolidate orders through a single export relationship. Sample quantities are available before committing to full container volume, and the team handles flexible trade terms, container consolidation, and pre-shipment coordination as part of standard export service.

Sourcing & Logistics

Parameter Detail
Supply Origin Dushanzi Petrochemical Company, Xinjiang, China (PetroChina)
Packaging 25 kg woven bags; jumbo bags available on request
Export Entity Zhejiang Bastone Technology Co., Ltd
Documentation COA (Q/SY DS112-2017), packing list, bill of lading, commercial invoice
Trade Terms FOB, CIF, CFR — flexible on request
Sample Availability Available prior to bulk order commitment

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