US3816359A
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Polysiloxane carbamate compounds
Assignee: Union Carbide Corp
•
Filing: 1972-05-10
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Granted: 1974-06-11
•
Expires: 1992-05-10
Abstract
Abstract An organopolysiloxane polymer free from hydroxyl radicals, which contains at least one carbamate radical having the formula WHEREIN R1 is hydrogen or a monovalent hydrocarbon radical; R2 is a monovalent hydrocarbon radical; said carbamate radical being directly bonded to an internal silicon atom of said polymer; as well as a method for preparing crosslinked siloxane foams by reacting polysiloxane carbamates with a hydroxy containing compound; a method for controlling, removing and/or recovering petroleum oil from water using said foams; and the crosslinked foamed products derived from said methods.
Inventors
- 👤 C Creamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:16
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/047; B01J; B01J20/00; B01J20/22; C02; C02F; C02F1/00; C02F1/68; C02F1/681; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/388; C08J2383/00; C08J2383/04; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
15 words
An organopolysiloxane polymer as defined in claim 1 wherein R1 and R2 are methyl radicals.
Claim 2
Dependent Claim
19 words
An organopolysiloxane polymer as defined in claim 1, selected from the class consisting of organopolysiloxane carbamates having the formula
Claim 3
Dependent Claim
16 words
An organopolysiloxane polymer as defined in claim 3 wherein R1 and R2 are lower alkyl radicals.
Claim 4
Dependent Claim
31 words
An organopolysiloxane polymer as defined in claim 4, wherein the polymer contains at least three pendant silicon atoms each having directly bonded thereto a dimethylcarbamate radical represented by the formula -OOCN(CH3)2.
Claim 5
Dependent Claim
48 words
An organopolysiloxane polymer as defined in claim 3, having the average formula ((X)aSiRbO4 (a b)/2)m(RcSiO4 c/2)n wherein X is a carbamate radical of the formula -OOCNR1R2; wherein m has an average value of from 1 to 1,000 and n has an average value of from 0 to 1,000.
Claim 6
Dependent Claim
23 words
An organopolysiloxane polymer as defined in claim 6, wherein R1 and R2 are lower alkyl radicals and R is a monovalent hydrocarbon radical.
Claim 7
Dependent Claim
15 words
An organopolysiloxane polymer as defined in claim 7, wherein R1 and R2 are methyl radicals.
Claim 8
Dependent Claim
14 words
An organopolysiloxane polymer as defined in claim 8 wherein R is a methyl radical.
Claim 9
Dependent Claim
31 words
An organopolysiloxane polymer as defined in claim 8, wherein the polymer contains at least three pendant silicon atoms each having directly bonded thereto a dimethylcarbamate radical represented by the formula -OOCN(CH3)2.
Claim 10
Dependent Claim
47 words
An essentially linear organopolysiloxane polymer as defined in claim 3, having the average formula (R)3SiO((R2)SiO)p(R(X)SiO)rSiR3 wherein X is a carbamate radical of the formula -OOCNR1R2; and wherein r has an average value of from 3 to 1,000 and p has an average of from 0 to 1000.
Claim 11
Dependent Claim
23 words
An organopolysiloxane polymer as defined in claim 11, wherein R1 and R2 are lower alkyl radicals and R is a monovalent hydrocarbon radical.
Claim 12
Dependent Claim
15 words
An organopolysiloxane polymer as defined in claim 12, wherein R1 and R2 are methyl radicals.
Claim 13
Dependent Claim
15 words
An organopolysiloxane polymer as defined in claim 13, wherein R is a lower alkyl radical.
Claim 14
Dependent Claim
14 words
An organopolysiloxane polymer as defined in claim 14 wherein R is a methyl radical.
Claim 15
Dependent Claim
27 words
A process for preparing a crosslinked polymeric siloxane foam product which comprises reacting an organopolysiloxane carbamate polymer as defined in claim 1 with a hydroxy containing compound.
Claim 16
Dependent Claim
13 words
A process as defined in claim 16, wherein the hydroxy compound is water.
Claim 17
Dependent Claim
17 words
A process as defined in claim 17, wherein the organopolysiloxane carbamate polymer reactant has the average formula
Claim 18
Dependent Claim
14 words
A process as defined in claim 18 wherein R is a lower alkyl radical.
Claim 19
Dependent Claim
13 words
A process as defined in claim 19, wherein R is a methyl radical.
Claim 20
Dependent Claim
13 words
A process as defined in claim 18, wherein the water is sea water.
Claim 21
Dependent Claim
15 words
The crosslinked siloxane foam product prepared according to the process as defined in claim 16.
Claim 22
Dependent Claim
15 words
The crosslinked siloxane foam product prepared according to the process as defined in claim 17.
Claim 23
Dependent Claim
15 words
The crosslinked siloxane foam product prepared according to the process as defined in claim 18.
Claim 24
Dependent Claim
15 words
The crosslinked siloxane foam product prepared according to the process as defined in claim 19.
Claim 25
Dependent Claim
15 words
The crosslinked siloxane foam product prepared according to the process as defined in claim 20.
Claim 26
Dependent Claim
15 words
The crosslinked siloxane foam product prepared according to the process as defined in claim 21.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |