Orthophthalic resins

The phthalic anhydride, maleic anhydride and glycol resins. These are generally referred to as general-purpose orthophthalic resins , or simply GP Ortho resins . 

Allylic monomers are sometimes used with alkyds to produce polyesters, with the orthophthalate resin being the most widely used because of its lower cost and very low water vapor pressures. Alkyd-diallylphthalate copolymers have significantly lower exotherm than an alkyd-styrene copolymer. The electrical properties of allylic resins are excellent and the variations of dissipation factor, dielectric constant, and dielectric strength with temperature and frequency are given in Figs. 2.12 and 2.13. The surface and volume resistivities remain... 

The two commonly used polyesters in construction are orthophthalic and isophthalic resins. They are both ambient-cured resins but benefit from an elevated temperature cure. The orthophthalic resins are the most widely used resins but have low thermal stability and chemical resistance. The isophthalic resins, which contain isophthalic acids as an essential ingredient, are of superior quality and have better chemical and thermal resistance and a... 

A highly flexible, non-accelerated, low viscosity orthophthalic resin allowing high filler loading, high resistance to freeze/thaw cycling, rapid gel-time and cure rate, specially formulated for the jointing of earthenware pipes. 

P An unaccelerated, reactive, semi-rigid, non-thixotropic orthophthalic resin formulated for the manufacture of architectural sheeting or panels. ... 

Pre-accelerated, low viscosity fast wet-out, thixotropic, low styrene emission, orthophthalic resin, offering good interlaminar adhesion, high heat resistance, improved water resistance and low exotherm enabling thick sections to be fabricated by either hand-lay or spray/projec ion techniques colour change on cure. Approved for food contact applications, Lloyd s and Det Norske Veritas. 

Pre-accelerated low profile, highly reactive, fast curing, orthophthalic resin of limited pigmentability for pultrusion and compression moulding, offering mouldings with excellent surface finish, good paintability and heat resistance. 

Non-accelerated, low viscosity, efficient wet-out, thixotropic, LSE orthophthalic resin, for hand-lay or spray/projection fabrication, offering good interlaminate adhesion, medium to long pot-life with a medium cure in thick sections, improved water resistance. Approved by Lloyd s and Det Norske Veritas. 

A general purpose pre-accelerated, very low viscosity, thixotropic, orthophthalic resin offering long pot-life, fast cure and rapid, efficient wet-out for both hand-lay and spray/projection lamination. Approved by Lloyd s. 

White pigmented, pre-accelerated, low viscosity, thixotropic, orthophthalic resin, offering extremely low styrene emission with good interiaminate adhesion and improved water resistance provides rapid and efficient wet-out in both hand-lay and spray/projection moulding with low exotherm in thick sections. Approved by Lloyds and Det Norske Veritas, Grade 2. 

Unaccelerated, translucent, orthophthalic resin suitable for translucent sheeting applications. 

Low profile orthophthalic resin for pultrusion, and compression moulding, giving excellent surface finish, low shrinkage and offering good paintability, highly reactive and heat resistant but with limited pigmentability. 

Non-accelerated, low viscosity, high reactivity, fast curing, fully pigmentable orthophthalic resin offering resistance to mild chemical reagents, particularly suitable for resin concrete applications. 

Unaccelerated, medium viscosity, highly reactive, orthophthalic resin, suitable for compression moulding and pultrusion, providing mouldings with excellent mechanical strength at elevated temperatures, resistant also to mild chemical reagents. 

An unaccelerated, tough, high reactivity, orthophthalic resin designed for pultrusion. 

A medium reactivity, general purpose, LSE, fast cure, preaccelerated and thixotropic general purpose orthophthalic resin designed for hand-lay and spray/projection lamination. 

A rapid cure, generai purpose, preaccelerated orthophthalic resin, designed for the manufacture of translucent sheeting. 

A preaccelerated, thixotropic general purpose, flame retardant (Class 2) orthophthalic resin for hand-lay and spray/projection deposition. 

A preaccelerated orthophthalic resin offering low exotherm characteristics enabling thick laminates to be manufactured by hand-lay or spray/projection deposition, without excessive exortherm. 

A general purpose, preaccelerated, medium reactive, LSE thixtropic orthophthalic resin offering good interiaminar adhesion for hand-iay and spray/projection iamination. 

A general purpose, preaccelerated, low reactive, LSE, thixotropic orthophthalic resin offering good interlaminar adhesion for hand-lay and spray/projection lamination. Long pot-life for thick sections. 

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