Patent US3875122A successfully refreshed from Google Patents.
US3875122A
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Cross-linking epihalohydrin polymers
Assignee: Zeon Chemical LP
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Filing: 1973-05-15
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Granted: 1975-04-01
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Expires: 1993-05-15
Abstract
Abstract WHERE R is a radical selected from C1-C10 alkylene, phenylene, C4-C9 cycloalkylene and the hydrocarbon radical remaining after the removal of the carboxylic acid groups from the dimer and trimer acids of C6-C20 diunsaturated fatty acids, and x is an integer from 2 to 4. The cross-linking can be accomplished by heating the polymer with one of the following agents or mixtures of agents which yield polycarboxylate polyanions: 1. QUATERNARY AMMONIUM SALTS OF THE POLYCARBOXYLIC ACIDS 2. A MIXTURE OF THE POLYCARBOXYLIC ACID, CERTAIN LEAD COMPOUNDS AND QUATERNARY AMMONIUM HALIDES 3. A MIXTURE OF AN ALKALI METAL SALT OF THE POLYCARBOXYLIC ACID AND A SMALL AMOUNT OF THE QUATERNARY AMMONIUM SALT OF THE POLYCARBOXYLIC ACID. Epihalohydrin polymers and copolymers can be cross-linked with a polycarboxylate polyanion having the formula
Inventors
- 👤 Joseph E Mirolli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:03
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/02; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
46 words
THE PROCESS OF CROSS-LINKING A POLYMER OF AN EPIHALOHYDRIN WHICH COMPRISES HEATING SAID POLYMER IN THE PRESENCE OF FROM ABOUT 0.00025 GRAM MOLE TO ABOUT 1.0 GRAM MOLE PER 100 GRAMS OF POLYMER OF AT LEAST ONE AGENT WHICH YIELDS A POLYCARBOXYLATE POLYANION HAVING THE FORMULA
Claim 2
Dependent Claim
46 words
THE PROCESS OF CROSS-LINKING A POLYMER OF AN EPIHALOHYDRIN WHICH COMPRISES HEATING SAID POLYMER IN THE PRESENCE OF FROM ABOUT 0.00025 GRAM MOLE TO ABOUT 1.0 GRAM MOLE PER 100 GRAMS OF POLYMER OF AT LEAST ONE AGENT WHICH YIELDS A POLYCARBOXYLATE POLYANION HAVING THE FORMULA
Claim 3
Dependent Claim
30 words
from about 10 mole % to about 50 mole %, based on the total moles oF polyanion cross-linkers, of a quaternary ammonium salt of a polycarboxylic acid having the formula
Claim 4
Dependent Claim
30 words
from about 10 mole % to about 50 mole %, based on the total moles oF polyanion cross-linkers, of a quaternary ammonium salt of a polycarboxylic acid having the formula
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein the polycarboxylate polyanion is formed in situ from a mixture of
Claim 6
Dependent Claim
36 words
about one mole per mole of carboxyl group of a quaternary ammonium halide having the formula X N(R'')4 where X is a halide radical and R'' is a hydrocarbon group selected from alkyl and cycloalkyl, and
Claim 7
Dependent Claim
36 words
about one mole per mole of carboxyl group of a quaternary ammonium halide having the formula X N(R'')4 where X is a halide radical and R'' is a hydrocarbon group selected from alkyl and cycloalkyl, and
Claim 8
Dependent Claim
20 words
The process of claim 2 wherein the polycarboxylic acid is azelaic acid and the quaternary ammonium halide is tetrabutylammonium bromide.
Claim 9
Dependent Claim
54 words
from about 0.1% to about 20% by weight based on the polymer of a lead compound selected from the lead salts of aromatic carboxylic acids, the lead salts of aliphatic carboxylic acids, the lead salt of carbonic acid, the lead salt of phosphorous acid, the lead salt of silicic acid and the lead oxides.
Claim 10
Dependent Claim
54 words
from about 0.1% to about 20% by weight based on the polymer of a lead compound selected from the lead salts of aromatic carboxylic acids, the lead salts of aliphatic carboxylic acids, the lead salt of carbonic acid, the lead salt of phosphorous acid, the lead salt of silicic acid and the lead oxides.
Claim 11
Dependent Claim
25 words
The process of claim 1 wherein the polycarboxylate polyanion is formed in situ from a quaternary ammonium salt of a carboxylic acid having the formula
Claim 12
Dependent Claim
17 words
The process of claim 4 wherein the quaternary ammonium salt of a carboxylic acid is tetramethylammonium azelate.
Claim 13
Dependent Claim
17 words
The process of claim 4 wherein the quaternary ammonium salt of a carboxylic acid is tetrabutylammonium azelate.
Claim 14
Dependent Claim
17 words
The process of claim 1 wherein the polycarboxylate polyanion is formed in situ from a mixture of
Claim 15
Dependent Claim
40 words
A cross-linked polymer of an epihalohydrin prepared by heating a solid polymer of an epihalohydrin having a reduced specific viscosity of above about 0.2 in the presence of at least one agent which yields a polycarboxylate polyanion having the formula
Claim 16
Dependent Claim
40 words
A cross-linked polymer of an epihalohydrin prepared by heating a solid polymer of an epihalohydrin having a reduced specific viscosity of above about 0.2 in the presence of at least one agent which yields a polycarboxylate polyanion having the formula
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |