Blue pigments with different degrees of transparency

Blue pigments with different degrees of transparency

Additivesfor Polymers MATERIALS Blue pigments with different degrees of transparency Sun Chemical has introduced four new products as part of its Sun...

104KB Sizes 0 Downloads 70 Views

Additivesfor Polymers

MATERIALS Blue pigments with different degrees of transparency Sun Chemical has introduced four new products as part of its Sunfast Blue colour line. The company claims that these pigments superior to conventional copper are phthalocyanine blue pigments in many ways, including having greater surface area. The products are: Sunfast Blue, 248-8623, a red shade, alpha blue with a dark face and deep red undertone; Sunfast Blue, 248-8515, a red shade, alpha blue with a dark transparent masstone and neutral flop; Sunfast Blue, 248-8485, a chlorinated, red shade blue targeted at automotive finishes and presenting the stylist with a blue that is green in both face and flop. This product has a surface area of 120 sq. metres/gm, almost 1.5 times higher than a typical copper phthalocyanine blue. Sunfast Blue, 249-8450, is a green shade, beta blue, treated to be flocculation resistant and having a masstone that is unique in its glass-like transparency. The product has application in areas where transparency and weatherability are issues such as in the new ‘tinted-clear’ styles of automotive base coat/clear coat systems and for special lighting effects where plastics have to be tinted blue while also remaining transparent. The surface area of this novel pigment is also high at 110 sq. metres/gm. Contact: Sun Chemical Corp, 5020 Spring Grove Avenue, Cincinnati, OH 45232-1999, USA. Tel: +l-513-681-5950. Fax: +l-513681-3778.

High performance grade of titanium dioxide TiOna RCL-188 from SCM Chemicals is a high performance grade of TiO,. It is for use in demanding applications such as thin films and in highly loaded colour concentrates. It has optimized surface treatment that

2

June 1996

reportedly provides excellent dispersion, easy incorporation into the polymer, and minimum effect on flow - even at 80% loadings. TiOna RCL-188 is said to be a non-lacing grade that offers excellent high-temperature processing stability. It is said to generate few volatiles. Contact: SCM Chemicals, 7 St Paul Street, Ste 1010, Baltimore, MD 21202, USA. Tel: +I-410-783-1120. Fax: +1-410-7831087.

Additive improves thermal properties of greenhouse film To prevent falling temperatures from damaging growing plants, a 70% additive carried in a masterbatch is said by Ampacet to improve the thermal properties of polyolefin greenhouse film by 1Oto 3°C over untreated PE films. At a typical use concentration of 9%, IB100218 inhibits the escape of infrared wavelengths from greenhouses, therefore holding in heat. The masterbatch is said to offer good transparency to visible light (400 to 800 nanometres) and short IR light waves (800 to 2500 nanometres) while reducing the transmission of long IR waves (7000 to 12000 nanometres) . Contact: Ampacet Corp, 660 White Plains Road, Tarrytown, Ny‘10.591, USA. Tel: +l914-631-6600. Fax: + l-91 4-631-7497.

Fire retardants effective at low levels Flame retardants from PQ Corp are said to incorporate properties in polypropylene products at lower loading levels than most other additives. BurnEx 2000 compounds have passed fire retardant tests in products containing as little as 1 or 2% active fire retardant, says PQ Corp. Applications include extruded or moulded products such as office furniture, wire insulation, and toys. The company says that the product line provides good tensile strength, impact resistance, and

e1996 Elsevier Science Ltd