http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-930765-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dda87def7f8cd70776435bfddb3eab64 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41N1-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41N1-14 |
| filingDate | 1961-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1963-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-930765-A |
| titleOfInvention | Improvements in coating compositions and planographic printing plates |
| abstract | Paper having planographic properties is produced by coating with an aqueous composition comprising deacetylated chitin (chitosan), a cross-linking agent, and an inorganic pigment. The coated composition is dried and cured, optionally in the presence of a catalyst. The cross-linking agent may be glyceraldehyde, N,N1-ethylene dimethylol cyclic urea, diphenolic acid-formaldehyde, trimethylolphenol, tris-(hydroxy methyl) nitromethane, urea-formaldehyde, phenol-formaldehyde, melamine formaldehyde, or glyoxal. The pigment may be colloidal silica, barium sulphate, titanium dioxide, kaolin, or a mixture of kaolin and silica in a ratio of 1-4 to 1. The silica may have a particle size of 7-30 millimicrons. The catalyst may be zinc acetate, chloride, phenol sulphonate, sulphamate, or silicochloride, or alum. The viscosity of the composition may be 200 centipoises. The pH may be adjusted to 4-5 by the addition of acetic acid. The ratio of pigment to chitosan may be 3-6 to 1. The ratio of cross-linking agent to chitosan may be 1 to 1-10. 2-10 lbs. of the composition per ream of 3,300 sq. ft. of base sheet may be applied. The coating may be dried at room temperature or 110 DEG -180 DEG F. Curing may be effected at room temperature or 300 DEG -350 DEG F. for 2-50 seconds. Examples are given. |
| priorityDate | 1960-07-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.