Patent US4618666A successfully refreshed from Google Patents.
US4618666A
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Disilane/organosilicon resin having enhanced thermomechanical properties
Assignee: Rhone Poulenc Specialites Chimiques
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Filing: 1985-05-20
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Granted: 1986-10-21
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Expires: 2005-05-20
Abstract
Abstract Novel high performance disilane/organosilicon resins useful, e.g., as molding powders and textile and building waterproofing agents (either in the form of aqueous dispersions or organic solutions thereof), comprise cohydrolysis/condensation reaction products in heterogeneous solvent medium of admixture of organochlorosilanes and organochlorodisilanes, said admixture comprising: (i) from about 10 to 70 molar % of at least one diorganochlorosilane having the formula R 2 SiCl 2 , in which the radicals R, which may be identical or different, are each hydrogen, methyl or phenyl; (ii) from about 30 to 70 molar % of at least one methylchlorodisilane which comprises at least about 30 moles % of tetrachloro-1,2-dimethyldisilane; and (iii) from 0 to about 60 molar % of at least one organotrichlorosilane having the formula R'SiCl 3 , in which R' is defined as is R above; and said resins having an average functionality of from about 2.2 to 3.
Inventors
- 👤 Hugues Porte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:12
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/495; C04B41/4955; C04B24/00; C04B24/40; C04B24/42; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/48
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
137 words
An organosilicon resin containing recurring disilane units, which comprises the reaction product of a simultaneous cohydrolysis and condensation reaction in a heterogeneous solvent medium of an admixture of organochlorosilanes and organochlorodisilanes, said admixture comprising: (i) from about 10 to 70 molar % of at least one diorganochlorosilane having the formula R 2 SiCl 2 , in which the radicals R, which may be identical or different, are each hydrogen, methyl or phenyl; (ii) from about 30 to 70 molar % of at least one methylchlorodisilane which comprises at least about 30 molar % of tetrachloro-1,2-dimethyldisilane; and (iii) from 0 to about 60 molar % of at least one organotrichlorosilane having the formula R'SiCl 3 , in which R' is defined as is R above; and said resin having an average functionality of from about 2.2 to 3.
Claim 2
Dependent Claim
137 words
An organosilicon resin containing recurring disilane units, which comprises the reaction product of a simultaneous cohydrolysis and condensation reaction in a heterogeneous solvent medium of an admixture of organochlorosilanes and organochlorodisilanes, said admixture comprising: (i) from about 10 to 70 molar % of at least one diorganochlorosilane having the formula R 2 SiCl 2 , in which the radicals R, which may be identical or different, are each hydrogen, methyl or phenyl; (ii) from about 30 to 70 molar % of at least one methylchlorodisilane which comprises at least about 30 molar % of tetrachloro-1,2-dimethyldisilane; and (iii) from 0 to about 60 molar % of at least one organotrichlorosilane having the formula R'SiCl 3 , in which R' is defined as is R above; and said resin having an average functionality of from about 2.2 to 3.
Claim 3
Dependent Claim
18 words
The organosilicon resin as defined by claim 1, wherein R is methyl and R' is methyl or phenyl.
Claim 4
Dependent Claim
17 words
The organosilicon resin as defined by claim 1, having an average functionality of from 2.6 to 2.9.
Claim 5
Dependent Claim
24 words
The organosilicon resin as defined by claim 1, said admixture further comprising a free silanol reactive C 1 -C 12 aliphatic alcohol or trialkoxysilane.
Claim 6
Dependent Claim
12 words
The organo silicon resin as defined by claim 1, in cross-linked state.
Claim 7
Dependent Claim
12 words
The organosilicon resin as defined by claim 1, in partially cross-linked state.
Claim 8
Dependent Claim
25 words
The organosilicon resin as defined by claim 1, wherein at least 80 molar % of said constituent (ii) comprises a mixture of tetrachloro-1,2-dimethyldisilane and trimethyl-1,1,2-trichlorodisilane.
Claim 9
Dependent Claim
15 words
The organosilicon resin as defined by claim 1 wherein all of constituent (ii) comprises tetrachloro-1,2-dimethyldisilane.
Claim 10
Dependent Claim
26 words
The organosilicon resin as defined by claim 1, said constituent (ii) comprising Rochow direct synthesis disilanes distilling at a temperature of from 152° to 154° C.
Claim 11
Dependent Claim
26 words
The organosilicon resin as defined by claim 1, comprising from about 2 to 8% by weight of silanol --OH functions based upon the total weight thereof.
Claim 12
Dependent Claim
15 words
A molding powder comprising particulate solids of the organosilicon resin as defined by claim 1.
Claim 13
Dependent Claim
15 words
A waterproofing agent comprising organic solution of the organosilicon resin as defined by claim 1.
Claim 14
Dependent Claim
15 words
A waterproofing agent comprising aqueous dispersion of the organosilicon resin as defined by claim 1.
Claim 15
Dependent Claim
20 words
The organosilicon resin as defined by claim 1, further comprising from 20 to 500 ppm of a metallic cross-linking catalyst.
Claim 16
Dependent Claim
98 words
A composition of matter comprising intimate admixture of: (i) from about 10 to 70 molar % of at least one diorganochlorosilane having the formula R 2 SiCl 2 , in which the radicals R, which may be identical or different, are each hydrogen, methyl or phenyl; (ii) from about 30 to 70 molar % of at least one methylchlorodisilane which comprises at least about 30 molar % of tetrachloro-1,2-dimethyldisilane; and (iii) from 0 to about 60 molar % of at least one organotrichlorosilane having the formula R'SiCl 3 , in which R' is defined as is R above.
Claim 17
Dependent Claim
98 words
A composition of matter comprising intimate admixture of: (i) from about 10 to 70 molar % of at least one diorganochlorosilane having the formula R 2 SiCl 2 , in which the radicals R, which may be identical or different, are each hydrogen, methyl or phenyl; (ii) from about 30 to 70 molar % of at least one methylchlorodisilane which comprises at least about 30 molar % of tetrachloro-1,2-dimethyldisilane; and (iii) from 0 to about 60 molar % of at least one organotrichlorosilane having the formula R'SiCl 3 , in which R' is defined as is R above.
Claim 18
Dependent Claim
23 words
The composition of matter as defined by claim 15, further comprising a free silanol reactive C 1 -C 12 aliphatic alcohol or trialkoxysilane.
Claim 19
Dependent Claim
26 words
A process for the preparation of an organosilicon resin, comprising cohydrolyzing and condensing, in heterogeneous solvent medium, the composition of matter as defined by claim 15.
Claim 20
Dependent Claim
54 words
The process as defined by claim 17, comprising cohydrolyzing and condensing said composition of matter in a heterogeneous solvent medium which comprises water and an organic solvent immiscible or slightly immiscible therewith, decanting the organic phase of reaction therefrom, removing residual acidity from said organic phase, and filtering and drying said de-acidified organic phase.
Claim 21
Dependent Claim
27 words
The process as defined by claim 18, further comprising adding a C 1 -C 12 aliphatic alcohol or alkoxysilane to the reaction medium during the hydrolysis thereof.
Claim 22
Dependent Claim
12 words
A shaped article comprising the organosilicon resin as defined by claim 1.
Claim 23
Dependent Claim
20 words
The organosilicon resin as defined by claim 1, wherein the reaction product formed is essentially devoid of a microgel fraction.
Claim 24
Dependent Claim
26 words
The process as defined by claim 17, further comprising adding a C 1 -C 12 aliphatic alcohol or alkoxysilane to the medium during the hydrolysis thereof.
References Cited (Backward Citations)
US4266068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |