US 5,334,737 AGranted

Liquid silicone esters

AssigneeGeneral Electric Company

InventorsRaymond J. Thimineur, Frank J. Traver, Virgina M. Van Valkenburgh

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Abstract

The present invention provides a liquid silicone ester having a melting point of up to about 30.degree. C., and comprising (A) units of the general formula R.sub.a R.sup.E.sub.b SiO.sub.[4-(a+b)]/2 or (B) R.sub.x R.sup.E.sub.y SiO.sub.1/2 units and SiO.sub.4/2 units; R.sup.E being an ester-containing organic group. The silicone ester is liquid at ambient skin temperature and has improved workability, improved payout, improved emollient properties, greater solubility in organic compounds, greater substantivity to surfaces and improved water resistance.

Claims15

Dependent claims

A silicone ester composition comprising a liquid silicone ester or blend of silicone liquid esters, the silicone liquid ester or blend of silicone liquid esters having a freezing point of up to about 30.degree. C., and comprising:

(A) units of the general formula:
R.sub.a R.sup.E.sub.b SiO.sub.[4-(a+b)]/2 ( 1)
wherein R is an organic radical, a is a number ranging from 0 to 3, b is a number ranging from 0 to 3, a+b is a number ranging from 1 to 3, with the proviso that there is present at least one R.sup.E radical, R.sup.E being an ester-containing organic group selected from the group consisting of:
(1) ##STR17## wherein c is 0 or 1;
d is 0, 1, or 2;
e is 1, 2, or 3;
the sum of d+e being 3;
further wherein R.sup.1 is a linear or branched organic group having from 2 to about 14 carbon atoms if the ester-containing organic group (1) contains no olefinic unsaturation and R.sup.1 is a linear or branched organic group having from about 2 to about 18 carbon atoms if the ester-containing organic group (1) contains olefinic unsaturation;
further wherein R.sup.2 is hydrogen or an organic radical of from 1 to about 6 carbon atoms;
R.sup.3 is a linear unsaturated organic radical of from 1 to about 23 carbon atoms, a linear saturated organic radical of from 1 to about 17 carbon atoms, or a branched organic radical of from about 1 to about 35 carbon atoms;
and R.sup.4 is a linear or branched organic radical having 0 to about 6 carbon atoms;
(2) ##STR18## wherein R.sup.5 is a linear or branched organic group having from 2 to about 15 carbon atoms if the ester-containing organic group (2) contains no olefinic unsaturation and R.sup.5 is a linear or branched organic group having from 2 to about 23 carbon atoms if the ester-containing organic group (2) contains olefinic unsaturation;
further wherein R.sup.6 is hydrogen or a linear or branched organic radical of from 1 to about 6 carbon atoms, and R.sup.7 is a linear unsaturated organic radical of from 1 to about 23 carbon atoms, a linear saturated organic radical of from 1 to about 17 carbon atoms, or a branched organic radical of from 1 to about 35 carbon atoms;
and R.sup.8 is hydrogen or a linear or branched organic group having from 1 to about 6 carbon atoms;
(3) ##STR19## wherein R.sup.9 is a linear or branched organic group having from 2 to about 14 carbon atoms if the ester-containing organic group (3) contains no olefinic unsaturation and R.sup.9 is a linear or branched organic group having from 2 to about 24 carbon atoms if the ester-containing organic group (3) contains olefinic unsaturation;
R.sup.10 is a linear unsaturated organic radical of from 1 to about 22 carbon atoms, a linear saturated organic radical of from 1 to about 14 carbon atoms, or a branched organic radical of from 1 to about 34 carbon atoms;
R.sup.11 is hydrogen or a linear or branched organic radical of from 1 to about 6 carbon atoms;
and R.sup.12 is hydrogen or a linear or branched organic radical of from 1 to about 6 carbon atoms;
or
(4) chemical reaction mixtures of (1), (2), and (3);
or
(B) R.sup.13.sub.x R.sup.E.sub.y SiO.sub.1/2 units and SiO.sub.4/2 units;
wherein each R.sup.13 is independently an organic radical, x is a number ranging from 0 to 3, y is a number ranging from 0 to 3, x+y is 3, with the proviso that there is present at least one R.sup.E radical;
the ratio of R.sup.13.sub.x R.sup.E.sub.y SiO.sub.1/2 units to SiO.sub.4/2 units being from about 0.5:1 to about 4:1.

21 more elements

Dependencies are inferred from the claim text.

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Abstract

(A) units of the general formula:
R.sub.a R.sup.E.sub.b SiO.sub.[4-(a+b)]/2 ( 1)
wherein R is an organic radical, a is a number ranging from 0 to 3, b is a number ranging from 0 to 3, a+b is a number ranging from 1 to 3, with the proviso that there is present at least one R.sup.E radical, R.sup.E being an ester-containing organic group selected from the group consisting of:
(1) ##STR17## wherein c is 0 or 1;
d is 0, 1, or 2;
e is 1, 2, or 3;
the sum of d+e being 3;
further wherein R.sup.1 is a linear or branched organic group having from 2 to about 14 carbon atoms if the ester-containing organic group (1) contains no olefinic unsaturation and R.sup.1 is a linear or branched organic group having from about 2 to about 18 carbon atoms if the ester-containing organic group (1) contains olefinic unsaturation;
further wherein R.sup.2 is hydrogen or an organic radical of from 1 to about 6 carbon atoms;
R.sup.3 is a linear unsaturated organic radical of from 1 to about 23 carbon atoms, a linear saturated organic radical of from 1 to about 17 carbon atoms, or a branched organic radical of from about 1 to about 35 carbon atoms;
and R.sup.4 is a linear or branched organic radical having 0 to about 6 carbon atoms;
(2) ##STR18## wherein R.sup.5 is a linear or branched organic group having from 2 to about 15 carbon atoms if the ester-containing organic group (2) contains no olefinic unsaturation and R.sup.5 is a linear or branched organic group having from 2 to about 23 carbon atoms if the ester-containing organic group (2) contains olefinic unsaturation;
further wherein R.sup.6 is hydrogen or a linear or branched organic radical of from 1 to about 6 carbon atoms, and R.sup.7 is a linear unsaturated organic radical of from 1 to about 23 carbon atoms, a linear saturated organic radical of from 1 to about 17 carbon atoms, or a branched organic radical of from 1 to about 35 carbon atoms;
and R.sup.8 is hydrogen or a linear or branched organic group having from 1 to about 6 carbon atoms;
(3) ##STR19## wherein R.sup.9 is a linear or branched organic group having from 2 to about 14 carbon atoms if the ester-containing organic group (3) contains no olefinic unsaturation and R.sup.9 is a linear or branched organic group having from 2 to about 24 carbon atoms if the ester-containing organic group (3) contains olefinic unsaturation;
R.sup.10 is a linear unsaturated organic radical of from 1 to about 22 carbon atoms, a linear saturated organic radical of from 1 to about 14 carbon atoms, or a branched organic radical of from 1 to about 34 carbon atoms;
R.sup.11 is hydrogen or a linear or branched organic radical of from 1 to about 6 carbon atoms;
and R.sup.12 is hydrogen or a linear or branched organic radical of from 1 to about 6 carbon atoms;
or
(4) chemical reaction mixtures of (1), (2), and (3);
or
(B) R.sup.13.sub.x R.sup.E.sub.y SiO.sub.1/2 units and SiO.sub.4/2 units;
wherein each R.sup.13 is independently an organic radical, x is a number ranging from 0 to 3, y is a number ranging from 0 to 3, x+y is 3, with the proviso that there is present at least one R.sup.E radical;
the ratio of R.sup.13.sub.x R.sup.E.sub.y SiO.sub.1/2 units to SiO.sub.4/2 units being from about 0.5:1 to about 4:1.

21 more elements