US4148838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silylated block copolymers
Assignee: Wacker Chemical Corp
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Filing: 1977-07-05
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Granted: 1979-04-10
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Expires: 1997-07-05
Abstract
Abstract Alkali metal terminated organic polymers are reacted with silicon containing compounds having aliphatic unsaturation to produce a new class of reactive silylated organic polymers. These silylated organic polymers can in turn be reacted with cyclic siloxanes to produce silylated organic-organopolysiloxane block copolymers which are useful as protective coatings, surfactants and as elastomers.
Inventors
- 👤 Eugene R. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:24
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/442; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44; C08F; C08F12/00; C08F12/02; C08F12/04; C08F12/06; C08F12/08; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/12; C08F297/00; C08F297/02; C08G77/48; C08G77/50; C08G81/00; C08G81/02; C08G85/00; C08G85/004; C08K; C08K5/00; C08K5/0008; C08K5/0025; C08L; C08L43/00; C08L43/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A composition obtained from the reaction of a silylated organic polymer and an unsaturated monomer capable of being polymerized by anionic polymerization and having carbon-to-carbon unsaturation, said silylated organic polymer is obtained from the reaction of a silane of the formula ##STR16## where R is a monovalent hydrocarbon radical, X is selected from the class consisting of halogen, acyloxy radicals, hydrocarbonoxy radicals, sulfato radicals, phosphato radicals and perchlorato radicals, a is a number of from 1 to 4 and b is a number of from 1 to 3, with a carbanion containing organic polymer, said carbanion containing polymer is obtained from the polymerization of an unsaturated organic monomer having a carbn-to-carbon double bond in the presence of a carbanion forming catalyst.
Claim 2
Dependent Claim
121 words
A composition obtained from the reaction of a silylated organic polymer and an unsaturated monomer capable of being polymerized by anionic polymerization and having carbon-to-carbon unsaturation, said silylated organic polymer is obtained from the reaction of a silane of the formula ##STR16## where R is a monovalent hydrocarbon radical, X is selected from the class consisting of halogen, acyloxy radicals, hydrocarbonoxy radicals, sulfato radicals, phosphato radicals and perchlorato radicals, a is a number of from 1 to 4 and b is a number of from 1 to 3, with a carbanion containing organic polymer, said carbanion containing polymer is obtained from the polymerization of an unsaturated organic monomer having a carbn-to-carbon double bond in the presence of a carbanion forming catalyst.
Claim 3
Dependent Claim
15 words
The composition ##STR17## of claim 1, wherein the unsaturated monomer is a vinyl containing silane.
Claim 4
Dependent Claim
129 words
A method for preparing the composition of claim 1 which comprises reacting a silylated organic polymer with an unsaturated monomer capable of being polymerized by anionic polymerization and having carbon-to-carbon unsaturation, said silylated organic polymer is obtained by reacting a silane of the formula ##STR18## where R is a monovalent hydrocarbon radical, X is selected from the class consisting of halogen, acyloxy radicals, hydrocarbonoxy radicals, sulfato radicals, phosphato radicals and perchlorato radicals, a is a number of from 1 to 4 and b is a number of from 1 to 3, with a carbanion containing organic polymer, in the presence of an aprotic solvent said carbanion containing polymer is obtained by polymerizing an unsaturated organic monomer having a carbon-to-carbon double bond in the presence of a carbanion forming catalyst.
Claim 5
Dependent Claim
14 words
The method of claim 3, wherein the unsaturated monomer is a vinyl containing silane.
Claim 6
Dependent Claim
21 words
The method of claim 3, wherein the silylated organic polymer is obtained by reacting vinyltrichlorosilane with a carbanion containing organic polymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |