Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1987-12-31
1990-01-30
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524881, C08L 8104
Patent
active
048974439
ABSTRACT:
Polysulfide sheeting is prepared by mixing a curable polysulfide oligomer or polymer, carbon black, and manganese dioxide as a hardening catalyst; forming the composition into a sheet; and curing the sheet at an elevated temperature. The sheeting has unusually high short-term heat resistance, so it will not lose its watertightness when coated with hot-laid asphalt at 240.degree. C. It has better resistance to ultraviolet light than conventional polysulfide sheeting, and good penetration and compression set resistance. The sheeting can be laminated to a reinforcing layer, if desired. A continuous waterproofing layer can be formed by laying pieces of the sheeting in overlapping relation, placing an uncured polysulfide rope between the overlapping edges of adjacent pieces of sheeting, and curing the rope, thus joining the pieces to form an integral sheet. Such waterproof layers can be incorporated into paving for bridges, roofs, and other structures.
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Lee, Dr. Timothy C. P., "LP-2 Manganese Dioxide Compounds for the Rubber Industry", Sep. 24, 1984, pp. 3-4 and Tables.
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Bergmann Franz-Josef
Endruscheit Peter
Hockenberger Lothar
Lee Timothy C. P.
Robinson Raymond
Marquis Melvyn I.
Rutgerswerke Aktiengesellschaft
White Gerald K.
Woodward Daniel W.
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