US5310843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolysiloxane and method for the preparation thereof
Assignee: DuPont Toray Specialty Materials KK
•
Filing: 1992-09-29
•
Granted: 1994-05-10
•
Expires: 2012-09-29
Abstract
Abstract An MQ organopolysiloxane compatible with organic plastics, has an epoxy-containing organic group, and has the following general formula ##STR1## R 1 represents monovalent hydrocarbon groups, R 2 represents the hydrogen atom and monovalent hydrocarbon groups, R 3 represents epoxy-containing organic groups and alkoxysilylalkyl groups, a is 0 or a positive number, b and c are positive numbers, a/c has a value of 0 to 4, b/c has a value of 0.05 to 4, and (a+b)/c has a value of 0.2 to 4. Also, a method for the preparation of this organopolysiloxane comprises an addition reaction of an Si-H containing organopolysiloxane with an epoxy-containing compound in the presence of a hydrosilylation catalyst.
Inventors
- 👤 Yoshitsugu Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:52
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/48; C08G77/50; C08L101/00; C08G77/12; C08G77/14; C08G77/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
A method for producing an organopolysiloxane having an epoxy-containing organic group comprising reacting in the presence of (A) a hydrosilylation-reaction catalyst, with (B) an SiH-containing organopolysiloxane with the general formula ##STR14## R 1 is a non-alkenyl monovalent hydrocarbon group, d is 0 or a positive number, e and f are positive numbers, d/f has a value of 0 to 4, e/f has a value of 0.05 to 4, and (d+e)/f has a value of 0.2 to 4, (C) an aliphatically unsaturated epoxy-containing organic compound, and optionally (D) an alkoxysilylalkene, where the moles of aliphatic unsaturation in (C) and (D) is less than the moles of silicon-bonded hydrogen atoms in (B).
Claim 2
Independent Claim
110 words
A method for producing an organopolysiloxane having an epoxy-containing organic group comprising reacting in the presence of (A) a hydrosilylation-reaction catalyst, with (B) an SiH-containing organopolysiloxane with the general formula ##STR14## R 1 is a non-alkenyl monovalent hydrocarbon group, d is 0 or a positive number, e and f are positive numbers, d/f has a value of 0 to 4, e/f has a value of 0.05 to 4, and (d+e)/f has a value of 0.2 to 4, (C) an aliphatically unsaturated epoxy-containing organic compound, and optionally (D) an alkoxysilylalkene, where the moles of aliphatic unsaturation in (C) and (D) is less than the moles of silicon-bonded hydrogen atoms in (B).
Claim 3
Dependent Claim
23 words
The method according to claim 1 in which (A) is first mixed with (B), (C) is then added, and (D) is subsequently added.
Claim 4
Dependent Claim
23 words
The method according to claim 1 in which (A) is first mixed with (B), (D) is then added, and (C) is subsequently added.
Claim 5
Dependent Claim
23 words
The method according to claim 1 in which (A) is first mixed with (B), (D) is then added, and (C) is subsequently added.
Claim 6
Dependent Claim
30 words
A composition obtained according to the method of claim 1 comprising an organopolysiloxane having an epoxy-containing organic group wherein said organopolysiloxane has the following units ##STR15## where R* is 2-(3,4-epoxycyclohexyl)ethyl.
Claim 7
Independent Claim
130 words
A method for producing an organopolysiloxane having an epoxy-containing organic group comprising reacting in the presence of (A) a hydrosilylation-reaction catalyst, with (B) an SiH-containing organopolysiloxane with the general formula ##STR16## R 1 is a non-alkenyl monovalent hydrocarbon group, d is 0 or a positive number, e and f are positive numbers, d/f has a value of 0 to 4, e/f has a value of 0.05 to 4, and (d+e)/f has a value of 0.2 to 4, (C) an aliphatically unsaturated epoxy-containing organic compound, and optionally (D) an alkoxysilylalkene, where (A) is first mixed with (B), (C) is then added and (D) is subsequently added, and where the moles of aliphatic unsaturation in (C) and (D) is equal to or more than the moles of silicon-bonded hydrogen atoms in (B).
Claim 8
Independent Claim
130 words
A method for producing an organopolysiloxane having an epoxy-containing organic group comprising reacting in the presence of (A) a hydrosilylation-reaction catalyst, with (B) an SiH-containing organopolysiloxane with the general formula ##STR16## R 1 is a non-alkenyl monovalent hydrocarbon group, d is 0 or a positive number, e and f are positive numbers, d/f has a value of 0 to 4, e/f has a value of 0.05 to 4, and (d+e)/f has a value of 0.2 to 4, (C) an aliphatically unsaturated epoxy-containing organic compound, and optionally (D) an alkoxysilylalkene, where (A) is first mixed with (B), (C) is then added and (D) is subsequently added, and where the moles of aliphatic unsaturation in (C) and (D) is equal to or more than the moles of silicon-bonded hydrogen atoms in (B).
Claim 9
Independent Claim
112 words
A method for producing an organopolysiloxane having an epoxy-containing organic group comprising reacting in the presence of (A) a hydrosilylation-reaction catalyst and an organic solvent, with (B) an SiH-containing organopolysiloxane with the general formula ##STR17## R 1 is a non-alkenyl monovalent hydrocarbon group, d is 0 or a positive number, e and f are positive numbers, d/f has a value of 0 to 4, e/f has a value of 0.05 to 4, and (d+e)/f has a value of 0.2 to 4, (C) an aliphatically unsaturated epoxy-containing organic compound, and optionally (D) an alkoxysilylalkene where the moles of aliphatic unsaturation in (C) is less than the moles of silicon-bonded hydrogen atoms in (B).
Claim 10
Independent Claim
112 words
A method for producing an organopolysiloxane having an epoxy-containing organic group comprising reacting in the presence of (A) a hydrosilylation-reaction catalyst and an organic solvent, with (B) an SiH-containing organopolysiloxane with the general formula ##STR17## R 1 is a non-alkenyl monovalent hydrocarbon group, d is 0 or a positive number, e and f are positive numbers, d/f has a value of 0 to 4, e/f has a value of 0.05 to 4, and (d+e)/f has a value of 0.2 to 4, (C) an aliphatically unsaturated epoxy-containing organic compound, and optionally (D) an alkoxysilylalkene where the moles of aliphatic unsaturation in (C) is less than the moles of silicon-bonded hydrogen atoms in (B).
References Cited (Backward Citations)
US3455877A
Cited
US4083856A
Cited
JPS54116099A
Cited
US4370358A
Cited
US4707531A
Cited
US4946921A
Cited
US5011901A
Cited
US5079311A
Cited
EP0458355A2
Cited
US5158991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-09 | 1997-11-08 | 1998-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-09 | 2001-11-08 | 2002-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-09 | 2005-11-08 | 2006-05-10 | $7700.00 | Window Closed / Lapsed |