http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1203578-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_48da738b460fdea062ce8b28c62a4b74 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-06 |
| filingDate | 1966-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_daf64f35271b4934077cbb017180ad30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d75b5c7620180ef1dbb54b59992f955 |
| publicationDate | 1970-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1203578-A |
| titleOfInvention | Poly(episulphide) compositions |
| abstract | 1,203,578. Polyepisulphide compositions. DUNLOP CO. Ltd. 24 Oct., 1967 [27 Oct., 1966], No. 48160/66. Heading C3R. A composition suitable for use as a sealant comprises polyepisulphide and a metal peroxide, the polysulphide having at least three reactive groups per molecule at least one of which is a thiol group and the others being thiol or amino. Mixtures of polyepisulphides may be used in which case the average number of reactive groups must be greater than two per molecule. Suitable peroxides are those of Group IV metals, e.g. lead peroxide (preferred), as well as zinc, barium and calcium peroxides. The amount of peroxide is usually 0.25 to 2.5 gm. moles per gm. equivalent of total thiol functionality. The compositions also preferably include an adhesion-promoting resin, e.g. phenol-, cresol- or resorcinol-formaldehyde resin, polyester or ketone-aldehyde resin, in amounts up to 20% by weight of the polysulphide. Fillers and pigments may be present, e.g. CaCO 3 , silica, carbon black and TiO 2 , as well as accelerators and retarders, the latter being exemplified by stearic acid. The compositions may also include plasticizers, e.g. polyesters, chlorinated diphenyl derivatives and p-toluene sulphonamides. In making up the composition, the peroxide, and retarder, if used, may be made into a paste with part of the plasticizer and added to the other ingredients just before use. The functional polyepisulphides are based preferably on polymers of propylene or butylene sulphide or copolymers of ethylene, propylene and butylene sulphides, and are flowable materials with molecular weights of up to 10000. They may be prepared by (1) use of a Group IIB metal compound together with a cocatalyst which may be ammonia, ammonium compound, amine, hydrazine or derivative, dithiol, trithiol or dithiolamine; (2) polymerizing in the presence of an amino-thiol adduct and a base as described in Specification 1,203,577; (3) reacting a difunctional polyepisulphide with a polyfunctional compound, e.g. a polymer having one amino and one thiol group may be reacted with cyanuric chloride to provide three terminal thiol groups. Reference has been directed by the Comptroller to Specification 1,084,893. |
| priorityDate | 1966-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.