In actual production, DOTP manufacturing yields a certain proportion of by-product material. In the past, this material was often left under-utilised because of its dark colour, complex composition and limited application channels. From a material-performance standpoint, however, this by-product normally still contains a proportion of DOTP components, while also being fluid, flowing well when heated and naturally dark brown in colour. It therefore has practical value in waterproofing materials, bitumen replacement, black PVC granulation, and compound plasticisation for rubber and plastics. We call it a plastic additive.
1. Product Positioning
A composite plasticizer for rubber and plastics, also referred to simply as a plastic additive.
Complies with customs code: 3812200000.
Main Applications
Waterproofing building materials and bitumen alternatives
The product is fluid and flows more readily after heating, so it can be used in formulation systems for waterproofing membranes, roof waterproofing, joint filling and seepage-control works.
Resource recovery of by-products
It originates from the by-product stream of DOTP production. After resource recovery it serves as a more cost-effective industrial raw material, suited to bulk engineering procurement and formulation cost reduction.
2. Why Choose a DOTP By-Product Composite Plasticizer?
Its core features:
1. Contains 30%+ DOTP components
The product contains more than 30% DOTP components, which gives it a degree of plasticising ability and helps improve material flexibility in waterproofing and bitumen-replacement systems.
2. Fluid form, good flow when heated, strong application compatibility
Compared with conventional solid plasticizers or high-viscosity bituminous materials, this product is fluid, which makes it easy to store, pump, meter and blend. In waterproofing formulations, the fluid form helps it mix with fillers, powders, rubber powder, bitumen or modified resins, improving processing uniformity.
3. Even better flow after heating
The product has a marked thermal-flow advantage. It is fluid at room temperature, and heating lowers its viscosity further and increases flow, making it better suited to blending, coating, pouring, dip-coating and roller-coating. For waterproofing membranes, roof waterproofing and joint sealing, good hot-flow behaviour means stronger application compatibility.
4. Naturally dark brown, suited to dark waterproofing systems, usable as a preferred bitumen alternative that lowers purchase cost.
Bitumen is a common base material in traditional waterproofing products. But bitumen price volatility, low-temperature brittleness and high-temperature flow have long affected waterproofing performance.
Although the product is dark in colour, this gives it a natural colouring advantage in waterproofing materials, black PVC products and bitumen-replacement applications. For waterproofing finished goods that need a black or dark appearance, it can reduce the amount of added black pigment, lowering formulation cost while making the finished colour more consistent.
5. A recovered by-product with better cost performance
This product comes from the by-product stream of DOTP production and belongs to the resource-recovery direction. Compared with pure DOTP or high-cost modified bitumen, its purchase cost is more advantageous.
Applicable scenarios include:
1. Waterproofing membrane unrolling — workers unrolling a waterproofing membrane
2. Workers softening a membrane with flame for roof waterproofing
3. Bitumen modification blending — lower application difficulty and improved performance
For bulk engineering procurement, waterproofing material production and PVC granulation companies, cost performance is an important factor in formulation choice. While meeting a certain level of performance requirements, this product can help customers lower raw-material costs and improve overall formulation economics.
We also provide customised services for customers including Oriental Yuhong, Guangdong CKS, Dayu Waterproof, the Weifang Taitou Town waterproofing industry cluster and the Shijiazhuang Xinle industry cluster.
3. Comparison with Traditional Materials
| Item | DOTP By-Product Plastic Additive | Pure DOTP | Ordinary Bitumen | Modified Bitumen |
|---|---|---|---|---|
| DOTP content | Contains 30%+ DOTP components | High-purity DOTP | None | Depends on formulation |
| Form | Fluid, flows strongly when heated | Liquid | Solid or high viscosity | Relatively high viscosity |
| Colour | Dark brown | Colourless or pale yellow | Black | Black or dark |
| Waterproofing use | Can serve as bitumen replacement or modification aid | Higher cost | Traditional waterproofing base material | Better performance but higher cost |
| Black PVC use | Suited to dark formulations, reduces colour powder | Needs extra colour powder | Not applicable | Not applicable |
| Cost advantage | Recovered by-product, better cost performance | Higher cost | Lower cost but limited performance | Higher cost |
4. Usage Recommendations and Precautions
To help customers apply this product well, we recommend paying attention to the following points:
1. Run a small-scale trial first
Different waterproofing and PVC formulations have different requirements for hardness, tensile strength, heat resistance, weatherability, flow and colour. A small trial is recommended to determine the optimal addition ratio.
2. Control the heating temperature
The product flows better after heating, but in actual processing the temperature should be set reasonably according to the equipment, substrate and formulation system, to avoid oxidation or performance loss from overheating.
3. Pay attention to storage conditions
Fluid products should be sealed, kept away from light, protected from moisture and contamination during storage and transport. Storage arrangements should be set according to the specific physical parameters.
4. Adjust the formulation to colour requirements
The product is naturally dark brown and suits dark waterproofing finished goods and black PVC products. If a customer needs a light or specific colour, the colour impact should be assessed in advance.
5. Use in line with engineering performance requirements
This product is suited as a cost-reducing raw material for waterproofing materials, bitumen replacement, joint filling, seepage control and PVC granulation. For special engineering requirements such as high weatherability, high elasticity or high tensile strength, it is recommended to combine it with other modifiers or high-performance materials.
5. FAQ
What is a DOTP by-product composite plasticizer?
A DOTP by-product composite plasticizer is a rubber-and-plastics composite plasticizer formed from the by-product material of DOTP production after resource recovery. The product normally contains more than 30% DOTP components, is fluid, flows better after heating, and is suited to waterproofing materials, bitumen replacement and black PVC granulation.
Why is this product suited to waterproofing materials?
It is fluid, flows well when heated, is naturally dark brown and contains flexible DOTP components, which suit mixing, coating and pouring waterproofing methods. It can also serve as a preferred bitumen alternative, helping lower waterproofing material costs and improving the brittleness and low-temperature hardening of plain bitumen.
Can this product fully replace bitumen?
It can be used as a preferred bitumen alternative or a bitumen modification aid, but whether it can fully replace bitumen must be assessed against the specific engineering requirements, formulation system, performance indicators and application conditions. A small-scale trial is recommended to determine the optimal addition ratio.
6. Call to Action
If you are looking for a composite plasticizer for waterproofing materials, bitumen replacement, black PVC granulation or PVC injection-moulding granules, contact us for product parameters, sample testing advice and formulation application plans.
Enquire now: get DOTP by-product composite plasticizer samples and technical data
You can provide the following information and we will match a suitable application plan:
- Target application: waterproofing membranes, roof waterproofing, joint filling, seepage control, PVC granulation, etc.;
- Formulation system: bitumen, PVC, rubber, fillers, resins, etc.;
- Performance requirements: flow, colour, flexibility, weatherability, hardness, cost targets;
- Purchase scale: sample testing, small-batch trial production, bulk engineering procurement.
Enquire Now: Get DOTP By-Product Composite Plasticizer Samples and Technical Data
If you are looking for a composite plasticizer for waterproofing materials, bitumen replacement, black PVC granulation or PVC injection-moulding granules, welcome to contact us for product parameters, sample testing advice and formulation application plans.
Contact Us- Target application: waterproofing membranes, roof waterproofing, joint filling, seepage control, PVC granulation, etc.;
- Formulation system: bitumen, PVC, rubber, fillers, resins, etc.;
- Performance requirements: flow, colour, flexibility, weatherability, hardness, cost targets;
- Purchase scale: sample testing, small-batch trial production, bulk engineering procurement.
