Retarder is an additive that delays hardening and curing speed of mortar. It is mainly used to prolong open time and setting time for cement based or gypsum base mortar.

When gypsum meet water, it would become hard in a very short period, which makes operation time of gypsum greatly shortened. Gypsum Retarder can effectively prolong the setting time of gypsum, users can control the initial setting time of gypsum by adjusting different dosage of Retarder.

Guudpoly Retarder can be used in various gypsum based mortar, filler, skim coat (wall putty), cement base self-leveling mortar, waterproof mortar, etc.

Guudpoly GR40L is produce by degraded polyamids, salified with calcium in liquid. It’s a kind of retarder special designed for various gypsum applications.

Physical Specification

Properties / Benefits

Guudpoly GR40L provides the following benefits for gypsum based products:

● Prolong initial setting time

● Stable rheological properties

● No Toxic substance

● High performance at low dosage

● Biodegradable product

Application

Guudpoly GR40L may be used in a variety of gypsum applications as follows:

● Gypsum boards

● Gypsum moulding profiles

● Gypsum Blocks

● All kinds of gypsum products

Handling & Dosage

Guudpoly GR40L can be added to other powdery components and mix to get a homogenous formulation. The dosage may vary from 0.01%~0.2% against gypsum (pbw) according to actual usage. The required dosage should be evaluated in suitable tests prior to final application.

Please contact us to get more information.