To get the performance required out of your parts, it takes an additive package that meets your demands. Dow Chemical’s full line of Paraloid Impact Modifiers and Process Aids coupled with their technical team can help you achieve the performance needed to make your projects successful.
PVC (polyvinyl chloride) consists of short stiff chains of polymer with low molecular weight. While this provides strong rigidity properties, it can make processing difficult. Dow Chemical’s Paraloid processing aids can help by:
Impact modifiers improve the impact resistance of PVC, reducing the chance for dents or warping. This is particularly important at low or sub-zero temperature. Additionally, Dow Paraloid impact modifiers:
A little can go a long way when it comes to processing aids and impact modifiers. They are utilized in 1-6 parts per 100 in PVC formulations.
Below is an example of generic PVC formulation:
Formulation Ingredient |
Parts (phr) |
Function |
|---|---|---|
| PVC Grades | 100
|
Hold color and prevent degradation during processing |
| Heat Stabilizer | 1-3
|
Hot melt fluidity, viscosity |
| Internal Lube(s) | 0-1
|
Melt flow through equipment without sticking |
| External Lube(s) | 0-1
|
Enable PVC to "melt" without degrading modifying rheology |
| Processing Aid | 0-2
(5-10 foam)
|
Increase toughness, prevent final (specialty apps part fracture, may have some processing functionality) |
| Impact Modifier | ≥0-6
|
Stiffness, lower cost |
| Fillers (CaCo3) | 0-25
|
Color, weatherability |
| Pigments (TiO2, etc) | 0-10
|
Foaming agent, UV stabilizer, etc. |
| Other | Varies
|
Dow Paraloid products are tailored for specific PVC applications. See the chart below for a breakdown of the variety of additives in the Paraloid product line.
Click on the grades to get details on their specific performance properties.
Additive Type |
Processing Aids |
Process Aid & Impact Modifier |
Acrylic Impact Modifiers |
|||||||
Paraloid™ Grade |
||||||||||
Window Profiles |
● |
|
|
|
● |
|
|
● |
|
● |
Sliding |
● |
● |
|
● |
|
|
|
● |
● |
● |
Pipes |
|
● |
|
|
|
|
|
● |
● |
● |
Flooring |
|
|
|
● |
|
|
|
|
|
|
Roofing Membranes |
|
● |
|
● |
|
|
|
|
|
|
Foam Extrusions |
|
|
|
|
● |
● |
● |
|
|
|
Clear PVC Films |
● |
● |
● |
|
|
|
|
|
|
|
Opaque PVC Films |
● |
|
● |
● |
|
|
|
|
● |
|
Other PVC Applications |
● |
● |
● |
● |
|
|
|
● |
● |
● |
PHONE 425.372.9464
.png)
Hi, let us know if you have any questions as you visit our website.
