One pack polysulphide sealants

Details One pack polysulphide sealants One pack polysulphide sealants

1976-03-15

1978-06-20

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 18S, 260 28R, 260 332R, 260 332SB, 260 336R, 260 336SB, 260 37R, 260 37SB, 260 791, C08F 2800

Patent

active

040961311

ABSTRACT:
Moisture curable extrudable polysulphide sealants comprise the reaction product of (a) a silanized polysulphide obtained by reacting an SH terminated polysulphide with a silane having 2 or 3 hydrolyzable groups and 1 or 2 groups capable of reacting with the SH group in order to cover up to 30% of the SH groups with the silane and (b) a disulphide containing the group ##STR1## group wherein het is an O or S atom or N-organic group. Other moisture curable extrudable sealants comprise the silanized polysulphide (a) and an ortho ester e.g. triethylorthoacetate.

REFERENCES:
patent: 2701192 (1955-02-01), Maass
patent: 3872059 (1975-03-01), Ely
patent: 3925331 (1975-12-01), Ely
Hofmann, Vulcanization and Vulcanizing Agents, (1968), pp. 73, 77, 78, 98-106, 197, 207-211, 225, 226, 254 and 256.

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