参考文献:
Rohm and Haas Company Patent: US435838 A, 98 Title/Abstract Full Text Show Details Rohm and Haas Company Patent: US449 A, 983 Title/Abstract Full Text Show Details Rohm and Haas Company Patent: US4493 A, 983 Title/Abstract Full Text Show Details Rohm and Haas Company Patent: US4494 A, 983