北京福彩快三走势:Gantrez? AN polymers

Chemistry: Maleic anhydride polymers and copolymers

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北京快三开奖结果彩票控 www.8hib.cn Gantrez™ AN polymers are synthetic, alternating copolymers of methyl vinyl ether (MVE) and maleic anhydride available in a range of molecular weights. Although the anhydride polymers (AN grades) are not directly useable in oral care products, they are used as base polymer for making polymer salts used as bioadhesives in denture adhesive applications. 

When Gantrez™ AN polymers anhydrides are dispersed in water, the anhydride side-chain hydrolyzes to produce free diacid solutions that are directly useable in oral care products.  Gantrez™ polymer diacids are available as Gantrez S polymers

Applications:

  • synthesis of denture adhesive polymers

Product Grades Available:

Grades

Approximate Molecular Weight1

Specific Viscosity 2

AN-119

130,000

0.1-0.5

AN-139

690,000

1.0-1.5

AN-149

1,250,000

1.5-2.5

AN-169

2,000,000

2.6-3.5

 

1. absolute molecular weight, SEC/LALLS detector
2. (1% in MEK @ 25oC), Cannon Fenske, tube Size 100 

All Gantrez AN polymers are available as white powders.

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