Method for the preparation of polydimethylsiloxanes having low r

Details Method for the preparation of polydimethylsiloxanes having low r Method for the preparation of polydimethylsiloxanes having low r

1993-10-19

1994-12-13

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

523205, 523216, 524783, 524786, 524788, 524789, 524785, 524779, 528 18, 528 41, C08G 7704

Patent

active

053730798

ABSTRACT:
A polydimethylsiloxane which has both low reactivity endgroups and high reactivity endgroups. These polydimethylsiloxanes are useful for making sealants with reduced modulus. An example of these polydimethylsiloxanes is one having low reactivity endgroups of the formula

REFERENCES:
patent: 3274145 (1966-09-01), Dupree
patent: 3474064 (1969-10-01), Hittmair et al.
patent: 3701753 (1972-10-01), Shaw
patent: 4898910 (1990-02-01), Kamis et al.

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