Polymer Add (Thailand) Co., Ltd.

Anti-Blocking Agents

Anti-blocking agents are particulate materials, such as talc, silica, or specialty additives, that are added to polymer films and sheets to prevent them from sticking together during storage and handling. These agents create microscopic surface roughness, reducing adhesion between layers.

There are basic three types of Nucleating agents,

Organic Anti-Block Agents

Synthetic Waxes:

Chemical Name CAS No. Melting Range Enquiry
Polyethylene Wax
9002-88-4
100 - 130
Polypropylene Wax
9003-07-0
140 - 160
Fischer-Tropsch Wax
8002-74-2
93 - 110
PTFE
9002-84-0
315 - 330
Ethylene Bis stearamide Wax

Natural Wax:

Chemical Name CAS No. Melting Range Enquiry
Montan Wax
8002-53-7
82 - 95
Carnauba Wax
8015-86-9
82 - 86
Candelilla Wax
8006-44-8
68 - 75
Sunflower Wax
1286686-34-7
74 - 76
Rice Bran Wax
8016-60-2
75 - 85
Microcrystalline Wax
63231-60-7
60 - 90
Glycerol Monostearate
91052-47-0
57 - 65
Ethylene Bis-Stearamide
110-30-5
144 - 146

Inorganic Anti-Block Agents

Chemical Name CAS No. Melting Range Enquiry
Aluminum Silicate
1327-36-2
>1500
Calcium Carbonate
471-34-1
800 - 1500
Calcium Magnesium Carbonate
16389-88-1
> 350
Calcium Silicate
1344-95-2
> 1500
Feldspar
68476-25-5
> 1000
Glass
65997-17-3
> 1400
Kaolin Clay
1332-58-7
> 1700
Magnesium Carbonate
546-93-0
> 350
Magnesium Hydrosilicate
1343-88-0
> 1900
Silica Fumed
7631-86-9
> 1600
Silica Crystalline (Quartz / Silica Sand)
14808-60-7
> 1650
Silica Precipitate
112926-00-8
> 1750
Sodium Calcium Aluminosilicate
1344-01-0
> 1600
Talc
14807-96-6
> 800