参考文献

du Pont de Nemours and Co. Patent: US2102611 , 1933 ; Full Text Show Details Carothers; Collins; Kirby Journal of the American Chemical Society, 1933 , vol. 55, p. 787 Full Text Show Details Carothers; Berchet Journal of the American Chemical Society, 1933 , vol. 55, p. 2813,2815