Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Patent
1998-05-18
2000-05-16
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
528 12, 528 14, 528 16, 528 15, 528 18, 528 19, 528 21, 528 34, 528 37, 528 41, 556440, 556442, 556 41, C08G 7708
Patent
active
060638877
ABSTRACT:
A 1-acyloxy-organotetrasiloxane represented by the general formula: ##STR1## wherein R.sup.1 is a monovalent organic group containing an acryloyloxy group or a monovalent organic group containing a methacryloyloxy group, and R.sup.2 is a monovalent hydrocarbon group, and a process for producing the above mentioned 1-acyloxy-organotetrasiloxane, which is characterized by subjecting hexamethylcyclotrisiloxane to a ring-opening reaction with an acyloxysilane represented by the general formula: ##STR2## wherein R.sup.1 is a monovalent organic group containing an acryloyloxy group or a monovalent organic group containing a methacryloyloxy group, and R.sup.2 is a monovalent hydrocarbon group, in the presence of an acidic catalyst.
REFERENCES:
patent: 5095085 (1992-03-01), Hara et al.
patent: 5268396 (1993-12-01), Lai
patent: 5856545 (1999-01-01), Okawa
"Cationic Telomerization of Hexamethylcyclotrisiloxane . . . ", European Polymer Journal, vol. 17, 1981. pp. 413-419.
Dow Corning Toray Silicone Co. Ltd.
Marquis Melvyn I.
Milco Larry A.
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