Compositions: coating or plastic – Materials or ingredients – Miscellaneous
Patent
1976-08-06
1979-01-02
Derrington, James H.
Compositions: coating or plastic
Materials or ingredients
Miscellaneous
106308B, 106308Q, 106308F, 106308N, 106308S, 106309, 260 4214, 260 4215, 260 4216, 260 4221, 260 4253, C08K 902, C08K 904, C08K 910
Patent
active
041325630
ABSTRACT:
An intraleucospheruloid/organic color pigment composition and a process for producing the same: the intraleucospheruloid/organic color pigment composition consisting essentially of (a) intraleucospheruloid pigment consisting essentially of spheruloids of essentially transparent polymer material, preferably cross-linked to essential insolubility in any physical solvent, having primary particles of an average size not exceeding 4 microns in diameter which have embedded therein particulate leuco pigment composition consisting essentially of inorganic opaque white and/or transparent white pigment material having a different refractive index from that of the polymer and primary particles of an average size not exceeding 0.2 micron in diameter; and (b) organic color pigment material consisting of organic color pigment composition having primary particles of an average size of less than 0.2 micron in diameter; said combination of (a) and (b) being in a weight ratio of from 1:100 to 100:1. The inorganic pigment material incorporated in the intraleucospheruloid pigment acts as an internal reflector of light already colored by passing through the ultra-fine organic color pigment material bonded or adsorbed on the surface thereof, to cause the intraleucospheruloid pigment to itself assume such color by internal reflection and refraction and to in addition reflect said light again through said color pigment. In the process for its production, the organic color pigment material is reduced to an average particle size of 0.2 micron or less, which is well below the normal pigmentary size range, and is then caused to be adsorbed or adhered to said intraleucospheruloid pigment by chemical or physical bonding. Cooperative features are also disclosed.
REFERENCES:
patent: 2751369 (1956-06-01), Te Grotenhuis
patent: 2786822 (1957-03-01), Vesce
patent: 3133893 (1964-05-01), Newman
patent: 3423358 (1969-01-01), Burke
patent: 3502582 (1970-03-01), Clemens
patent: 3700690 (1972-10-01), Burke
Burke, Jr., deceased Oliver W.
Humphreys Victor T.
Darrah Marion
Derrington James H.
Houghton Joseph Y.
LandOfFree
Intraleucospheruloid/organic color pigment compositions and proc does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Intraleucospheruloid/organic color pigment compositions and proc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intraleucospheruloid/organic color pigment compositions and proc will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1515791