Reaction injection molded polyurethanes having particular flexur

Details Reaction injection molded polyurethanes having particular flexur Reaction injection molded polyurethanes having particular flexur

1979-06-18

1981-01-20

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 521174, 528 77, 528 78, 528 79, C08G 1814

Patent

active

042463637

ABSTRACT:
Polyurethane reaction injection molded products are prepared which have flexural modulus factors (-20.degree. F./158.degree. F.) below 3.4 and often below 2. They are prepared by employing three different polyols or mixtures of polyols, each polyol having a specified reactivity relationship and are employed within specified solubility parameter relationships. These products also have at least two thermal transition temperatures.

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Ludwico et al., "The Bayflex 110 Series", Society of Automotive Engineers Passenger Car Meeting, Detroit, Sep. 26-30, 1977.
Gerkin et al., "The Properties of High Modulus RIM Urethanes", Society of Automotive Engineers Passenger Car Meeting, Detroit, Sep. 26-30, 1977.
Rowton, J. Elastomers and Plastics, Oct. 9, 1977, pp. 365-375.
Bonart, J. Macromol. Sci.-Phys., B2(1), Mar., 1968, pp. 115-138.
Wilkes et al., J. Macromol. Sci.-Phys., B7(1), 1973, pp. 157-175.
Wischmann et al., J. of Elastomers & Plastics, Jul. 9, 1977, pp. 299-311.

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