Mineral-coated paper and method of producing it
Abstract
Abstract IN ACCORDANCE WITH THE PRESENT INVENTION A GLOSSY MINERAL-COATED PAPER IS OBTAINED BY APPLYING A PRIME COAT HAVING AN ADHESIVE BINDER, SUBSEQUENTLY APPLYING A TOPCOAT CONTAINING A SYNTHETIC ADDITION POLYMER HAVING AN APPARENT SECOND ORDER TRANSITION TEMPERATURE (T1) OF AT LEAST 43*C., AND SUBSEQUENTLY GLOSS CALENDERING THE COATED PAPER. THE T1 VALUE REFERRED TO IS THE TRANSITION TEMPERATURE OR INFLECTION TEMPERATURE WHICH IS FOUND BY PLOTTING THE MODULUS OF RIGIDITY AGAINST TEMPERATURE. A CONVENIENT METHOD FOR DETERMINING MODULUS OF RIGIDITY AND TRANSITION TEMPERATURE IS DESCRIBED BY I. WILLIAMSON, BRITISH PLASTICS, 23, 87 TO 90, 102 (SEPTEMBER 1950). THE T1 VALUE HERE USED IS THAT DETERMINED AT 300 KG./CM.2.
Inventors
- 👤 Al Kennedy
Bibliographic Details
Claims Analysis
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