US3883472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast curing heat stable elastomeric compositions
Assignee: EIDP Inc
•
Filing: 1974-05-22
•
Granted: 1975-05-13
•
Expires: 1994-05-22
Abstract
Abstract Novel, fast curing elastomeric compositions having good scorch resistance containing an acrylic ester/butenedioic acid monoester dipolymer or ethylene/acrylic ester/butenedioic acid monoester terpolymer and are vulcanized in the presence of polyfunctional, organic, primary amines, and of accelerators, such as alkali metal or quaternary ammonium salts of weak acids, hydroxides, alcoholates, or phenolates. The heat stability of the vulcanized compositions is improved by the addition of antioxidants. The vulcanizates of this invention are useful, for example, in the manufacture of such automotive accessories as ignition wire jacketing, sparkplug boots, hoses, belts, seals, and gaskets.
Inventors
- 👤 Robin Nikolas Greene
- 👤 Kathrine Johnson Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:17
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/24; C08K5/04; C08K5/09; C08K5/13; C08K5/18; C08K5/19; C08K5/20
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
17 words
A POLYMERIC COMPONENT WHICH IS AN ACRYLIC ESTER/BUTENEDIOIC ACID MONESTER DIPOLYMER OR ETHYLENE/ACRYLIC ESTER/BUTENEDIOIC ACID MONOESTER TERPOLYMER,
Claim 2
Dependent Claim
17 words
A POLYMERIC COMPONENT WHICH IS AN ACRYLIC ESTER/BUTENEDIOIC ACID MONESTER DIPOLYMER OR ETHYLENE/ACRYLIC ESTER/BUTENEDIOIC ACID MONOESTER TERPOLYMER,
Claim 3
Dependent Claim
12 words
AN ELASTOMERIC COMPRISITION HAVING GOOD SCORCH RESISTANCE, SAID COMPOSITION CONSISTING ESSENTIALLY OF
Claim 4
Dependent Claim
12 words
AN ELASTOMERIC COMPRISITION HAVING GOOD SCORCH RESISTANCE, SAID COMPOSITION CONSISTING ESSENTIALLY OF
Claim 5
Dependent Claim
31 words
A VULCANIZING AGENT SELECTED FRM POLYFUNCTIONAL, ORGANIC, PRIMARY AMINES AND THEIR SALTS, THE AMOUNT OF THE POLYAMINE BEING ABOUT 0.96 - 0.30 MOLE OF AMINO FUNCTION PER KILOGRAM OF POLYMER, AND
Claim 6
Dependent Claim
31 words
A VULCANIZING AGENT SELECTED FRM POLYFUNCTIONAL, ORGANIC, PRIMARY AMINES AND THEIR SALTS, THE AMOUNT OF THE POLYAMINE BEING ABOUT 0.96 - 0.30 MOLE OF AMINO FUNCTION PER KILOGRAM OF POLYMER, AND
Claim 7
Dependent Claim
122 words
The composition of claim 1 wherein the accelerator is selected from the group consisting of a. 0.02 - 0.2 mole per kilogram of polymer of alkali metal salts or weak inorganic acids and alkali metal hydroxides; b. 0.02 - 0.2 mole per kilogram of polymer of alkali metal salts of weak organic acids, alkali metal alcoholates and phenolates; c. 0.01 - 0.1 mole per kilogram of polymer of quaternary ammonium and quaternary phosphonium hydroxides, alcoholates, halides, and salts with weak acids; d. 0.01 - 0.1 mole per kilogram of polymer of tertiary amines; e. 0.02 - 0.09 mole per kilogram of polymer of guanidine and aryl- and alkylguanidines; and f. 0.02 - 0.09 mole per kilogram of polymer or heterocyclic tertiary amines.
Claim 8
Dependent Claim
31 words
a vulcanizing agent selected from polyfunctional, organic, primary amines and their salts, the amount of the polyamine being about 0.06 - 0.30 mole of amino function per kilogram of polymer, and
Claim 9
Dependent Claim
31 words
a vulcanizing agent selected from polyfunctional, organic, primary amines and their salts, the amount of the polyamine being about 0.06 - 0.30 mole of amino function per kilogram of polymer, and
Claim 10
Dependent Claim
116 words
AT LEAST ONE VULCANIZATION ACDELERATOR SELECTED FROM BASES AND CONJUGATE BASES WHOSE KB AT 25*C IN WATER IS COMPRISED WITHIN THE RANGE OF 10-12 TO 10**6 AND WHICH DO NOT CAUSE CROSSLINKING BY REACTION WITH ESTER GROUPS; WITH THE PROVIDSOS THAT THE ACRYLIC ESTER IS A C1-C4 ALKYL ACRYLATE OR METHACRYLATE; THE BUTENEDIOIC ACID MONESTER IS A C1-C12 ALKYYL OR C6-C12 ARYL MONOESTER; THE DIPOLYMER CONTAINS ABOUT 1-10 WEIGHT PERCENT OF THE BUTENEDIOIC ACID MONOESTER; AND THE TERPOLYMER CONTAINS ABOUT 2 TO 10 WEIGHT PERCENT OF THE BUTENEDIOIC ACID MONOESTER, AND THE PROPORTION OF ALL THE ESTER GROUPS IN THE TERPOLYMER IS EQUIVALENT TO ABOUT 2.5 - 8.0 MOLES OF ESTER GROUPS PER KILOGRAM OF POLYMER.
Claim 11
Dependent Claim
116 words
AT LEAST ONE VULCANIZATION ACDELERATOR SELECTED FROM BASES AND CONJUGATE BASES WHOSE KB AT 25*C IN WATER IS COMPRISED WITHIN THE RANGE OF 10-12 TO 10**6 AND WHICH DO NOT CAUSE CROSSLINKING BY REACTION WITH ESTER GROUPS; WITH THE PROVIDSOS THAT THE ACRYLIC ESTER IS A C1-C4 ALKYL ACRYLATE OR METHACRYLATE; THE BUTENEDIOIC ACID MONESTER IS A C1-C12 ALKYYL OR C6-C12 ARYL MONOESTER; THE DIPOLYMER CONTAINS ABOUT 1-10 WEIGHT PERCENT OF THE BUTENEDIOIC ACID MONOESTER; AND THE TERPOLYMER CONTAINS ABOUT 2 TO 10 WEIGHT PERCENT OF THE BUTENEDIOIC ACID MONOESTER, AND THE PROPORTION OF ALL THE ESTER GROUPS IN THE TERPOLYMER IS EQUIVALENT TO ABOUT 2.5 - 8.0 MOLES OF ESTER GROUPS PER KILOGRAM OF POLYMER.
Claim 12
Dependent Claim
117 words
at least one vulcanization accelerator selected from bases and conjugate bases whose Kb at 25*C in water is comprised within the range of 10 12 to 106 and which do not cause crosslinking by reaction with ester groups; with the provisos that the acrylic ester is a C1-C4 alkyl acrylate or methacrylate; the butenedioic acid monester is a C1-C12 alkyl or C6-C12 aryl monoester; the dipolymer contains about 1-10 weight percent of the butenedioic acid monoester; and the terpolymer contains about 2 to 10 weight percent of the butenedioic acid monoester, and the proportion of all the ester groups in the terpolymer is equivalent to about 2.5 - 8.0 moles of ester groups per kilogram of polymer.
Claim 13
Dependent Claim
117 words
at least one vulcanization accelerator selected from bases and conjugate bases whose Kb at 25*C in water is comprised within the range of 10 12 to 106 and which do not cause crosslinking by reaction with ester groups; with the provisos that the acrylic ester is a C1-C4 alkyl acrylate or methacrylate; the butenedioic acid monester is a C1-C12 alkyl or C6-C12 aryl monoester; the dipolymer contains about 1-10 weight percent of the butenedioic acid monoester; and the terpolymer contains about 2 to 10 weight percent of the butenedioic acid monoester, and the proportion of all the ester groups in the terpolymer is equivalent to about 2.5 - 8.0 moles of ester groups per kilogram of polymer.
Claim 14
Dependent Claim
51 words
A composition of claim 1 wherein the vulcanizing agent is selected from the group consisting of HMDA, HMDAC, HMDA-cinnamaldehyde adduct, HMDA-dibenzoate salt, TEPA, 4,4''-methylenedianiline, 4,4''-oxydiphenylamine, m-phenylenediamine, p-phenylenediamine, and 4,4''-methylenebis(o-chloroaniline); and the vulcanization accelerator is selected from the group consisting of potassium stearate, tetrabutylammonium hydroxide, (C8H17-C10H21)3(CH3)NCl, triethylenediamine, N,N-dimethylaminoethanol, tetramethylguanidine, tetraethylguanidine and imidazole.
Claim 15
Dependent Claim
14 words
A composition of claim 1 also containing 15 - 40 volume percent of fillers.
Claim 16
Dependent Claim
16 words
A composition of claim 4 wherein the proportion of fillers is 20 - 25 volume percent.
Claim 17
Dependent Claim
37 words
A composition of claim 1 also containing 0.1 - 5 parts by weight of at least one antioxidant per hundred parts by weight of the polymer, the antioxidant being selected from phosphorus esters, hindered phenols, and amines.
Claim 18
Dependent Claim
20 words
A composition of claim 6 wherein the proportin of antioxidant is 1 - 3 parts per 100 parts of polymer.
Claim 19
Dependent Claim
28 words
A composition of claim 7 wherein the antioxidant is tris(mixed mono- and dinonylphenyl)phosphite in mixture with 4, 4''-bis( Alpha , Alpha -dimethylbenzyl)diphenylamine or with 4, 4''-butylidenebis( Beta -t-butyl-m-cresol).
Claim 20
Dependent Claim
27 words
A vulcanized elastomeric composition, having good heat stability, said composition being obtained by curing a composition of claim 1 for 0.5 - 45 minutes at about 160*-235*C.
Claim 21
Dependent Claim
28 words
A vulcanized elastomeric composition, having good heat stability, said composition being obtained by curing a composition of claim 1 for 10 - 30 minutes at about 175*- 180*C.
References Cited (Backward Citations)
US2599123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |