# US 5,352,752 A · Room temperature curable composition

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- Number: US 5,352,752 A
- Document ID: US5352752A
- Status: Granted
- Kind: A
- Application number: 08/193,864
- Filed: 1994-02-09
- Granted: 1994-10-04
- Earliest claimed: 1993-02-09
- Assignees: Shin-Etsu Chemical Co., Ltd.
- Inventors: Noriyuki Koike; Shinichi Sato
- Web page: https://patentgrep.com/patent/US5352752A

## CPC

- C08G 65/336: containing silicon
- C08G 65/007: {containing fluorine}
- C08G 77/54: Nitrogen-containing linkages
- C08L 83/14: in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms (C08L83/10 takes precedence)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

A room temperature curable composition comprises a fluorine-containing organosilicon compound represented by the general formula: ##STR1## wherein a is an integer of at least 1, b is 2 or 3, each R.sup.1 is a monovalent unsubstituted or substituted hydrocarbon group, each R.sup.2 is a divalent hydrocarbon group, each R.sub.f is a divalent perfluoroalkylene group or a divalent perfluoroalkylether group, and Q is a divalent siloxane group (--Si--O--Si) having four pendant monovalent hydrocarbon groups bonded to silicon atoms. The composition can provide a cured product excellent in all of the solvent resistance, chemical resistance, heat resistance and cold resistance.

## Claims

### Claim 1

A room temperature curable composition comprising a fluorine-containing organosilicon compound represented by the following general formula (1): ##STR11## wherein a is an integer of at least 1, b is 2 or 3, R.sup.1, which may be the same or different where plural R.sup.1 are present, is a monovalent unsubstituted or substituted hydrocarbon group, the plural R.sup.2 may be the same or different and are each a divalent unsubstituted or substituted hydrocarbon group, the plural X may be the same or different and are each an alkoxy group or an alkenyloxy group, the plural R.sub.f may be the same or different and are each a divalent perfluoroalkylene group or a divalent perfluoroalkylether group, and Q is a siloxane group expressed by the following formula (2): ##STR12## where the plural R.sup.3 and R.sup.4 may be the same or different and are each a monovalent unsubstituted or substituted hydrocarbon group.

### Claim 2 (depends on 1)

The composition of claim 1, wherein in the general formula (1) R.sup.1 is selected from the group consisting of a methyl group, a phenyl group and the 3,3,3-trifluoropropyl group.

### Claim 3 (depends on 1)

The composition of claim 1, wherein in the general formula (1) R.sup.2 are each the ethylene group or the propylene group.

### Claim 4 (depends on 1)

The composition of claim 1, wherein in the general formula (1) said plural X are each the methoxy group or the isopropenyloxy group.

### Claim 5 (depends on 1)

The composition of claim 1, wherein in the general formula (1) said plural R.sub.f are each a perfluoroalkylene group having 4 to 8 carbon atoms.

### Claim 6 (depends on 1)

The composition of claim 1, wherein in the general formula (1) said plural R.sub.f are each a divalent perfluoroalkylether group having 6 to 100 carbon atoms.

### Claim 7 (depends on 1)

The composition of claim 1, wherein said fluorine-containing organosilicon compound has a viscosity at 25.degree. C. in the range of 25 to 500,000 cSt.

### Claim 8 (depends on 1)

The composition of claim 1, which further comprises a filler.

### Claim 9 (depends on 1)

The composition of claim 1, which further comprises a condensation catalyst.

### Claim 10 (depends on 1)

A cured product obtained by curing the composition as claimed in claim 1.