Packaging & Filling
Goodyear Chemtech (Beijing) Co., Ltd
22 Dec 2025
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Get Your Quote Now : Place of origin : China
GUUDPOLY GR81 is produced by degraded polyamides, salified with calcium. It’s a kind of retarder specially designed for various gypsum applications.
Physical Specification
| Item | Specification |
| Appearance (%) | Whitish to Yellowish powder |
| Active Content | > 9 0% |
| Bulk Density | 400~600g/L |
| pH value (10%) | 6-10 |
| Water Content | < 7% |
| Solubility in water | Soluble |
Properties / Benefits
GUUDPOLY GR81 provides the following benefits for gypsum-based products:
- ● Prolong initial setting time
- ● Stable rheological properties
- ● Excellent compatibility in alkaline system
- ● No Toxic substance.
- ● High performance at low dosage
- ● Very low effect to final strength
- ● Biodegradable product
Application
GUUDPOLY GR81 may be used in a variety of gypsum applications as follows:
- ● Gypsum plaster, skim coat
- ● Adhesive mortars
- ● Joint fillers
- ● Moulding Plaster
- ● Gypsum Blocks
- ● Stucco, machinery plasters
- ● All kinds of gypsum products
Handling & Dosage
GUUDPOLY GR81 can be added to other powdery components and mix to get a homogeneous formulation. The dosage may vary from 0.02%~0.2% against gypsum (pbw) according to actual usage. The required dosage should be evaluated in suitable tests prior to final application.
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