Heat-resistant unsaturated polyester resin composition and heat-

Details Heat-resistant unsaturated polyester resin composition and heat- Heat-resistant unsaturated polyester resin composition and heat-

1996-02-26

1997-03-25

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

528272, 528306, 528307, 525168, 525445, 523527, C08K 340, C08G 6352, C08L 6706

Patent

active

056142994

ABSTRACT:
The heat-resistant unsaturated polyester resin composition of the present invention consists essentially of (a.sub.1) an unsaturated polyester which is obtained by the reaction of (.alpha..sub.1) a polybasic acid component containing at least an ethylenic unsaturated polybasic acid with (.alpha..sub.2) a polyhydric alcohol component, and (a.sub.2) a diluent monomer component for the unsaturated polyester, wherein the polyhydric alcohol component (.alpha..sub.2) contains 2-methyl-1,3-propanediol and 1,4-cyclohexanedimethanol in the total amount of 50 mol % or more, and 2-methyl-1,3-propanediol and 1,4-cyclohexanedimethanol are in the molar ratio of 9:1 to 5:5. The fiber-reinforced composite material of the present invention comprises the above resin composition and reinforcing fibers. The molded article manufactured using this composite material exhibits excellent strength and rigidity even under high temperatures of over 200.degree. C., and consequently is useful as fixture pallets to be used in the automatic soldering process of the printed circuit board, and reinforcing rods (stiffeners) for the fixture pallets and other various molded articles to which heat resistance under high temperatures is required.

REFERENCES:
patent: 5318853 (1994-06-01), Bayha et al.
patent: 5373058 (1994-12-01), Hager et al.

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