AOC Palapreg® P 145-01 Pure Unsaturated Polyester Resin with Maleic Acid

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Pure maleated unsaturated polyester resins for low shrinkage applications
Palapreg® P 145-01 is intended for use in SMC and BMC production. It has good compatibility with low profile additives and can be used in low shrinkage SMC/BMC applications for very good surface quality. Molded parts made with Palapreg® P 145-01 show excellent uniform coloration.

vantage

Very good surface quality (low shrinkage)
High gloss parts for applications where appearance is critical
Excellent and even coloring

Main application areas

Construction and Infrastructure, Electrical, Transportation.

Product Specification

causality	numerical value	unit (of measure)	TM
exterior condition	limpid	-	2265
solid	65.5 – 67.5	%	2033
stickiness	1500 – 1800	mPa.s	2013
acid value	15 – 18	mg KOH/g	2401
Gel time	75 – 103	unit of angle or arc equivalent one sixtieth of a degree	2261
peak time	115 – 145	unit of angle or arc equivalent one sixtieth of a degree	2261
peak temperature	265 – 295	°C	2261
water content	6 – 14	ppm	2350

Viscosity: Z2/100/23°C; Conditions: 100 g resin, 1 g tert.Butylperoxybenzoate at 130°C; Reactivity measured by adding 1 g tert.Butylperoxybenzoate to 100 g resin.

Typical Properties of Liquid Resins

Property	Value	Unit	TM
Density	1100	kg/m³	2160
Flash point	33	°C	2800
Stability	Solid dark 25°C	3 months

Typical properties of unfilled castings

causality	numerical value	unit (of measure)	TM
tensile strength	61	MPa	ISO 527-1
tensile modulus	39	GPa	ISO 527-1
Elongation at break	24	%	ISO 527-1
HDT (Heat Distortion Temperature)	133	°C	ISO 75 Ae

Application Guide

Palapreg® P 145-01 is typically used for standard SMC/BMC processing or in conjunction with Palapreg® LPAs for the preparation of low shrinkage/low profile SMC and BMC. Typically, the ratio of Palapreg® P 145-01 to polymer solution is 60:40, but this can be adjusted if required. Depending on the size of the molded part, it is recommended to add 300 to 600 ppm of p-phenylenedione (calculated as UP-resin plus LPAs) to the system.

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