Page 159 - Handbook of Adhesion Promoters

152 Selection of Adhesion Promoters for Different

8.10 POLYCARBONATE

There is a good choice of commercial additives which are designed to improve adhesion
to polycarbonates, these include Amplify IO 3701 & 3801, and GR 204 & 205, Bomar
BR-7432GB & BR-941, Dynasylan SIVO 210 & 214, Dynasylan DAMO-T, and Silquest
A-1100 & 1102.
The adhesion performance between PC and PP was improved by using amine modi-
1
fied polypropylene. PC deposited on the PP-g-NH surfaces was confirmed by FTIR-
2
ATR and SEM analysis of delaminated films, which is an indication of an interaction
1
between reactive sites of each polymer.
A coating composition for coating polycarbonate and other polymeric materials
comprises one hydroxyl-functional film-forming polymer, one polyisocyanate compound,
2
and an adhesion promoter. The adhesion promoter comprises modified polyolefin (chlori-
nated polyolefin) and monohydric alcohol (e.g., cetylalcohol, tridecyl alcohol, tetradecyl
alcohol, pentadecanol, hexadecanol, heptadecanol, and octadecanol), or epoxy-functional
2
silane, or their mixture.
The thermally-cured silicone coatings on polycarbonate required an adhesion pro-
moter which had the following composition: 0.3 wt% bis[3-(trimethoxysilyl)pro-
3
pyl]amine, 0.3 wt% tetrabutyl orthotitanate, and 99.4 wt% heptane. The coating is
3
applied to prevent scratches. An adhesion promoter for an anti-fog coating on polycar-
4
bonate is based on bovine-serum-albumin-grafted-perfluorophenylazide.
REFERENCES
1 Vazquez-Rodriguez, S; Sanchez-Valdes, S; Rodriguez-Gonzalez, F; Castillon-Barraza, FF;
Gonzalez-Gonzalez, VA; Gonzalez-Cantu, MC, J. Appl. Polym. Sci., 119, 336-42, 2011.
2 Walther, IFM; Swift, LW; Price, LN, EP1756235, Akzo Nobel Coatings International B.V., Feb. 28, 2007.
3 Huck, W-R; Dohner, R, US8747607, Sika Technology AG, Jun. 10, 2014.
4 Zürcher, S; Dorcier, A; Fusco, S; Lopez, I; Tosatti, S, EP2236524, SuSoS AG, Oct. 6, 2010.