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Chain extended cyclohexanone-formaldehyde and acetophenone–formaldehyde resins

✍ Scribed by Nilgün Kizilcan; Ahmet Akar

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
190 KB
Volume
70
Category
Article
ISSN
0021-8995

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✦ Synopsis

The preparation of chain extended cyclohexanone-formaldehyde and acetophenone-formaldehyde resins and their physical properties were studied. The chain extension was regulated by the ratio of the hydroxyl groups of the ketonic resin/reactive reagents. Both resins were chain extended with dimethyl dichlorosilane, phosphorus oxychloride, phenylphosphonic dichloride, toluene-2,4-diisocyanate, prepolymers (prepared from trimethylolpropane and toluene-2,4-diisocyanate), phthalic anhydride, tetrahydrophthalic anhydride, trimellitic anhydride, 4,4Ј-oxydiphthalic anhydride, and maleic anhydride. Solubilities, melting point, molecular weight, and flammability of the chain extended resins were affected by the extender reagent.

📜 SIMILAR VOLUMES

Modification of acetophenone–formaldehyd
Modification of acetophenone–formaldehyde and cyclohexanone–formaldehyde resins
✍ Nilgün Kizilcan; Ahmet Akar 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 550 KB

Cyclohexanone-formaldehyde and acetophenone-formaldehyde resin were in situ modified with phenol, Bisphenols, and substituted acetophenones. Furthermore, acetophenoneformaldehyde, cyclohexanon-formaldehyde, and in situ-modified resins were modified with anhydrides such as acetic anhydride, maleic an