Good-Rite

A premium antiscalent product in this group is Flocon 100 from Great Lakes Chemical Corporation (originally the brand was owned by Pfizer, then Ciba-Geigy, then FMC). Flocon 100 is a 35% w/w, 2,000 MW acrylic acid polymer. An alternate and much more concentrated product is Good-Rite K-752, a 62.5% w/w, 2,100 MW acrylic acid polymer from Noveon, Inc. (formerly BF Goodrich Company). 

PAAs with a MW of approximately 2,000 to 3,000 are useful as general-purpose antiscalents. Examples include Polacryl A40-43, Good-Rite K-752, Acumer 1000, Aquatreat AR-900, and Sokalan PA20. 

Acrylic acid terpolymers have appeared on the market in recent years. With their broad spectrum of functions, they offer the potential for excellent waterside conditions. In particular, the terpolymers have proved to be very effective particulate iron oxides dispersants and colloidal iron stabilizers. Examples include acrylic acid/sulfonic acid/sodium styrene sulfonate (AA/SA/SSS), such as Good-Rite K781, K797, K798. A further example is acrylic acid/ sulfonic acid/substituted acrylamide (AA/SA/NI), such as Acumer 3100. 

Stabilizers. Preliminary set The stabilizing additives used are listed in Table I. A preliminary set of fabrics was prepared for evaluation which consisted of Good-rite 3125 in two concentrations (a hindered phenol suggested for use on polyamides in B.F. Goodrich Co. Technical Bulletin GC-60, 1982), Cyanox 1790 (hindered phenol),... 

Set A A second set of examples, identified as Set A, was then prepared for a complete evaluation. As listed in Table III, stabilizers applied to Set A were Good-rite 2135, Cyanox 1790,... 

The Good-rite 3125 was also combined with the Chimassorb 944LD and Cyanox STDP to evaluate possible synergistic effects between combinations of a hindered phenol stabilizer with first a thioester and then a hindered amine light stabilizer (HALS). 

Good-rite 3125 (hindered phenol) B. F. Goodrich Co. 3,5-Di-tert-butyl-4-hydroxyhydro-cinnamic acid triester with 1,3,5 -tris(2-hydroxy-ethyl)-s-triazine-2,4,6(1H,3U,5fl)-trione... 

Good-rite 3125 + Cyanox STDP 26.5 11.9 Cyasorb 531 + Tinuvin 770 5.1 62.5... 

Good-rite 3125 + Chimassorb 944LD 29.6 15.7 Tinuvin 327 + Tinuvin 765 4.7 54.3... 

The best performer was again the UV-sorber Cyasorb 531 followed closely by Good-rite 3125 (1.76% add-on) which generated increases of only 6.6% and 5.3%, respectively, over DMF. 

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