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MMMC [1 record]
Record 1 - internal organization data 2004-04-26
Record 1, English
Record 1, Subject field(s)
- Chemical Elements and Compounds
- Pulp and Paper
- Conservation and Repair of Books
Record 1, Main entry term, English
- methoxy magnesium methyl carbonate
1, record 1, English, methoxy%20magnesium%20methyl%20carbonate
correct
Record 1, Abbreviations, English
- MMMC 2, record 1, English, MMMC
see observation
- mmmc 3, record 1, English, mmmc
avoid
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
An important improvement in the Wei T'o system was the replacement of the effective deacidification agent, magnesium methoxide, by methoxy magnesium methyl carbonate (mmmc). This replacement resulted in the reduction of several undesirable side effects such as a white deposit on the surface of the treated paper and clogging of the spray guns. 4, record 1, English, - methoxy%20magnesium%20methyl%20carbonate
Record number: 1, Textual support number: 2 CONT
Challenges in mass deacidification [of paper]. ... The first deacidification solution formula used the specially blended gas cfcs 12/13 to disperse the methoxy magnesium methyl carbonate (MMMC). 5, record 1, English, - methoxy%20magnesium%20methyl%20carbonate
Record number: 1, Textual support number: 1 OBS
MMMC; mmmc: These might be in-house or non-recognized abbreviations; not to be used alone, to avoid any risk of confusion. y 6, record 1, English, - methoxy%20magnesium%20methyl%20carbonate
Record 1, French
Record 1, Domaine(s)
- Éléments et composés chimiques
- Pâtes et papier
- Entretien des livres
Record 1, Main entry term, French
- carbonate méthylique de méthoxymagnésium
1, record 1, French, carbonate%20m%C3%A9thylique%20de%20m%C3%A9thoxymagn%C3%A9sium
correct, masculine noun
Record 1, Abbreviations, French
- MMMC 1, record 1, French, MMMC
see observation, masculine noun
Record 1, Synonyms, French
- carbonate méthylique de méthoxy magnésium 2, record 1, French, carbonate%20m%C3%A9thylique%20de%20m%C3%A9thoxy%20magn%C3%A9sium
avoid, masculine noun
- CMMM 2, record 1, French, CMMM
see observation, masculine noun
- CMMM 2, record 1, French, CMMM
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Plusieurs méthodes de désacidification de masse ont été proposées au cours des deux dernières décennies et certains systèmes font actuellement l'objet de travaux de développement. Cependant, le seul procédé appliqué avec succès sur une période prolongée est celui de la Bibliothèque nationale et des Archives nationales, le procédé Wei T’o. Ce procédé consiste à saturer les livres d’une solution de carbonate méthylique de méthoxymagnésium(MMMC) dans un mélange de fréons, puis à laisser le solvant s’évaporer. La solution alcaline de MMMC neutralise d’abord l'acide contenu dans le papier, puis le résidu alcalin laissé par l'évaporation du solvant forme, jusqu'à son épuisement, un tampon empêchant l'acidification du papier. 3, record 1, French, - carbonate%20m%C3%A9thylique%20de%20m%C3%A9thoxymagn%C3%A9sium
Record number: 1, Textual support number: 2 CONT
Des défis en désacidification de masse. [...] La première formule de la solution de désacidification employait comme gaz le mélange spécial cfc 12/113 pour disperser le carbonate méthylique de méthoxy magnésium (CMMM). 4, record 1, French, - carbonate%20m%C3%A9thylique%20de%20m%C3%A9thoxymagn%C3%A9sium
Record number: 1, Textual support number: 1 OBS
MMMC; CMMM : abréviations non officielles; ne pas les utiliser seules, pour éviter tout risque de confusion. 5, record 1, French, - carbonate%20m%C3%A9thylique%20de%20m%C3%A9thoxymagn%C3%A9sium
Record 1, Spanish
Record 1, Textual support, Spanish
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