Patent US5430073A successfully refreshed from Google Patents.
US5430073A
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Process for preparing polymers and mouling compounds based thereon
Assignee: DSM BV
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Filing: 1993-07-15
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Granted: 1995-07-04
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Expires: 2013-07-15
Abstract
Abstract The invention relates to a process for preparing a polymer in which in situ polymerization of monomers takes place in the presence of a catalyst, in which the monomers are obtained by in situ activation of precursor monomers. According to the invention a premature polymerization is avoided, but polymerization only starts at the desired moment.
Inventors
- 👤 Hans K. van Dijk
- 👤 Ronald M. A. M. Schellekens
- 👤 Markus J. H. Bulters
- 👤 Olav M. Aagaard
- 👤 Gerard P. De Vries
- 👤 Matthias J. G. Brouns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:26
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0081; B01D67/0088; B01D71/00; B01D71/06; B01D71/72; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08J; C08J9/00; C08J9/36; C08J9/40; C08J9/405; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
117 words
Process for preparing a polymer comprising in situ activating precursor monomers to obtain polymerizable monomers, and allowing the monomers to polymerize in the presence of a catalyst, wherein said precursor monomers have a structure according to formula (I): ##STR6## where X is ##STR7## --S-- or --O--; R 1 is hydrogen, --C(O)OH, --C(O)C(O)OH, --SO 3 H, --C(O)H, --I or --Br; R 2 is hydrogen, a C 1 -C 10 alkyl group, --C(O)OH, or a halogen; R 3 is hydrogen, a C 1 -C 10 alkyl group, --C(O)OH, or a halogen; and R 4 is hydrogen, --C(O)OH, --C(O)C(O)OH, --SO 3 H, --C(O)H, --I or --Br, with the proviso that R 1 and R 4 are not both hydrogen simultaneously.
Claim 2
Dependent Claim
117 words
Process for preparing a polymer comprising in situ activating precursor monomers to obtain polymerizable monomers, and allowing the monomers to polymerize in the presence of a catalyst, wherein said precursor monomers have a structure according to formula (I): ##STR6## where X is ##STR7## --S-- or --O--; R 1 is hydrogen, --C(O)OH, --C(O)C(O)OH, --SO 3 H, --C(O)H, --I or --Br; R 2 is hydrogen, a C 1 -C 10 alkyl group, --C(O)OH, or a halogen; R 3 is hydrogen, a C 1 -C 10 alkyl group, --C(O)OH, or a halogen; and R 4 is hydrogen, --C(O)OH, --C(O)C(O)OH, --SO 3 H, --C(O)H, --I or --Br, with the proviso that R 1 and R 4 are not both hydrogen simultaneously.
Claim 3
Dependent Claim
46 words
Process for preparing a molding compound in which the polymer is prepared according to claim 1, wherein a mixture or a solution containing said precursor monomers and catalyst is given a desired form and thereafter the monomers are obtained by in situ activating said precursor monomers.
Claim 4
Dependent Claim
18 words
Process according to claim 2, wherein the mixture also contains a matrix polymer, or the monomeric unit thereof.
Claim 5
Dependent Claim
13 words
Process according to claim 3, wherein the matrix polymer is a low-viscosity resin.
Claim 6
Dependent Claim
17 words
Process according to claim 3, wherein the mixture or the solution is introduced into a preheated mould.
Claim 7
Dependent Claim
18 words
Process according to claim 3, wherein the matrix polymer is a liquid resin, a paint or an emulsion.
Claim 8
Dependent Claim
13 words
Process according to claim 3, wherein the matrix polymer is a thermoplastic polymer.
Claim 9
Dependent Claim
26 words
Process according to claim 7, wherein the mixture is obtained by mixing a solution containing precursor monomer and catalyst with a wholly or partly molten thermoplast.
Claim 10
Dependent Claim
15 words
Process according to claim 1, wherein the catalyst comprises a transition metal and a halogen.
Claim 11
Dependent Claim
14 words
Process according to claim 9, wherein the catalyst is iron trichloride or copper dichloride.
Claim 12
Dependent Claim
12 words
Process according to claim 1, wherein the precursor monomer is pyrrole-2-carboxylic acid.
Claim 13
Dependent Claim
17 words
A process according to claim 1, wherein the monomers polymerize in the presence of a pH buffer.
Claim 14
Dependent Claim
18 words
A process according to claim 1, wherein the catalyst comprises an oxidizing cation and a stability promoting anion.
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