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US 4,058,657 AGranted
Co-cured compositions of amine-terminated liquid polymers and vinylidene-terminated polymers and process for preparation thereof
AssigneeThe B. F. Goodrich Company
InventorRobert William Ireland
Life of this patent
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Abstract
Co-cured compositions are prepared readily by mixing (1) 100 parts by weight of at least one amine-terminated liquid polymer having a carbon-carbon backbone and (2) from about 80 to about 120 parts by weight of at least one vinylidene-terminated polymer having a carbon-carbon, polyether or polysulfide polymeric backbone. The compositions undergo a soft cure readily at room temperature without addition of catalysts or crosslinking agents. The compositions are useful as caulks, sealants and potting compounds.
Claims12
A composition comprising
- 1. 100 parts by weight of at least one amineterminated liquid polymer containing an average from about 1.7 to about 3 amine groups per molecule, said groups being primary, secondary or a mixture thereof, and said polymer having the formula ##STR36## wherein Y is a univalent radical obtained by removing hydrogen from an amine group of a heterocyclic amine containing from 2 to 20 carbon atoms and at least two amine groups, at least two of said amine groups being primary, secondary, or a mixture thereof, and B is a polymeric backbone comprising carbon-carbonlinkages, and
- 2.
A process comprising reacting
- 1. 100 parts by weight of at least one amine-terminated liquid polymer containing from about 1.7 to about 3 amine groups per molecule, said groups being primary, secondary or a mixture thereof, and said polymer having the formula ##STR44## wherein Y is a univalent radical obtained by removing hydrogen from an amine group of a heterocyclic amine containing from 2 to 20 carbon atoms and at least two amine groups, said amine groups being primary, secondary or a mixture thereof, and B is a polymeric backbone comprising carbon-carbon linkages, and
- 2. from about 80 to about 120 parts by weight of at least one vinylidene-terminated liquid polymer having the formula ##STR45## wherein Z is selected from the group consisting of --S--, --N--, ##STR46## and --O--, A is a bivalent radical containing 1 to 10 atoms of at least one atom selected from the group consisting of C, O, S and N, R.sup.5 and R.sup.6 are hydrogen or alkyl radicals containing 1 to 4 carbon atoms, and G is a polymeric backbone comprising carbon-carbon linkages, said vinylidene-terminated polymer containing an average from about 1.7 to about 3 ##STR47## groups per molecule, wherein said backbone comprising carbon-carbon linkage contains polymerized units of at least one vinylidene monomer having at least one terminal CH .dbd.C<
- group, said monomer being selected from the group consisting of (a) monoolefins containing 2 to 14 carbon atoms, (b) dienes containing 4 to 10 carbon atoms, (c) vinyl and allyl esters of carboxylic acids containing 2 to 8 carbon atoms, (d) vinyl and allyl ethers of alkyl radicals containing 1 to 8 carbon atoms, and (e) acrylic acids and acrylates having the formula ##STR48## said R being hydrogen or an alkyl radical containing 1 to 3 carbon atoms and said R.sup.1 being hydrogen, an alkyl radical containing 1 to 18 carbon atoms, or an alkoxyalkyl, alkylthioalkyl or cyanoalkyl radical containing 2 to 12 carbon atoms.
Dependencies are inferred from the claim text.