Resin compositions containing metals such as aluminum
AssigneeSilberline Manufacturing Co., Inc.
InventorGeorge M. Kern
Life of this patent
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Abstract
This invention relates to a novel metal pigment product which is comprised of metal particles, terpene phenol resin and polyethylene resin and the process for making them. The compositions and products made from them, are stable even after storage at room temperature or being subjected to a heat aging test. Films or coatings made from these products have a uniform dispersion of the metal particles.
Claims62
A substrate having a coating, said coating comprising metal particles and mixture of resins, said metal particles being coated with said resins and being in a proportion of at least about 0.5% by weight and said resin comprising a terpene phenol resin having a softening point range from about 70.degree. to 195.degree. C. and a low density polyethylene resin having a softening point range of 90.degree. to 135.degree. C. and a molecular weight range from about 2,000 to 15,000, said coated metal particles prior to forming said coating on said substrate being flowable and non-self adhesive,
- said coating being of virtually uniform metal distribution, exhibiting a uniform metallic sheen, satin-like appearance and high reflectance with no visible blotches or agglomeration.
A substrate having a coating, said coating being formed of a coating composition comprising coated metal particles of
- (a) at least about 15% by weight of metal particles selected from the group consisting of aluminum, brass, bronze, copper, iron, lead, nickel, tin, zinc, gold and alloys thereof,
- (b) a low density polyethylene resin having a molecular weight range from about 2,000 to 15,000, and
- (c) a stabilizing agent which is a terpene phenol resin having a molecular weight range from about 400 to about 1,400,
- said polyethylene resin and said terpene phenol resin forming a coating on said particle surfaces, said coated metal particles prior to forming said coating on said substrate being flowable and non-self adhesive.
A flowable non-self-adhesive composition which comprises metal particles which are coated with a coating wherein
- (1) the metal is selected from the group of aluminum, brass, bronze, copper, iron, lead, nickel, tin, zinc and gold or an alloy thereof, and
- (2) the coating comprises a mixture of (a) a terpene phenol resin and (b) at least one member of the group consisting of a plasticizer and mineral oil,
- said metal being present to a percentage by weight where but for the presence of the terpene phenol resin, the concentrate made from said composition is not stable,
- said terpene phenol resin being present in an amount of at least about 0.5% by weight,
- said composition being especially suited for making uniform concentrates for use in films and coatings, said concentrates having improved shelf life.
The composition 25 wherein there is about 32% by weight of aluminum, about 2.5% by weight of terpene phenol resin and about 65.5% by weight of low density polyethylene resin.
A pelletizable resinous pigment composition comprising flowable non-self adhesive coated metal particles of
- (a) at least about 15% by weight of metal particles selected from the group consisting of aluminum, brass, bronze, copper, iron, lead, nickel, tin, zinc, gold and alloys thereof,
- (b) a low density polyethylene resin having a molecular weight range from about 2,000 to 15,000, and
- (c) a stabilizing agent which is a terpene phenol resin having a molecular weight range from about 400 to about 1,400,
- said polyethylene resin and said terpene phenol resin forming a coating on said particle surfaces.
Dependencies are inferred from the claim text.