http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1441110-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ca66d235db571795322465838afcb3de |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A63B67-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A63B67-187 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A63B67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A63B67-18 |
| filingDate | 1973-02-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1976-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1441110-A |
| titleOfInvention | Shuttlecocks |
| abstract | 1441110 Shuttlecocks DUNLOP Ltd 6 Feb 1974 [24 Feb 1973] 9206/73 Heading A6S Shuttlecock striking-caps are made by moulding a semi-rigid polyurethane foam, the foam having an indentation hardness in the range 30 to 75 units (ASTM D 2240). The foam-forming reaction may be carried out in a single stage, the reaction mixture comprising a suitable polyol, a polyisocyanate, a crosslinking agent, a catalyst, and a blowing agent. The polyol may be a polyether polyol e.g. a polyoxyalkylene trio], of molecular weight not exceeding 6000, or a polyester polyol e.g. a partially crosslinked diethylene glycol adipate, of molecular weight not exceeding 3000, these polyols all possessing a high proportion of primary hydroxyl end groups. The polyisocyanate, used in 5% stoichiometric excess based on polyol, is preferably a liquid at temperatures above 20‹C and may be a suitably modified diphenyl, methane diisocyanate or tolylene diisocyanate. The crosslinker may be a diol e.g. butane-1, 4-diol, or a triol e.g. glycerol, whilst the catalyst may be tetraethylene diamine or triethylene diamine. The blowing agent may be water and, if desired, a polysiloxane-oxyalkylene block copolymer may be added as surfactant. Reaction temperature may 'be between 20 and 65‹C as appropriate, mouldings being removable after 5 minutes curing time. The mouldings do not shrink appreciably after 7 days at 50‹C. A "two-stage process" involving prepolymers may also be used. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10415180-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11332880-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2017044671-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2018534005-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4365632-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10240284-B2 |
| priorityDate | 1973-02-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.