Polyolefin-acrylic bonded composite
AssigneeUVTEC, Inc.
InventorsKenneth W. Bartz, George D. Howell, David J. Cherry
Life of this patent
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Abstract
A flame-retardant, reinforced polyolefin-crosslinked acrylic bonded composite and method of preparation thereof are provided. The method of preparing the composite includes coating the crosslinked acrylic surface with a solution of an .gamma.-aminopropyltrialkoxysilane to form a bond therewith. The coated acrylic layer is placed in a heated press with the flame-retardant, reinforced polyolefin layer, and a tie material disposed therebetween, thereby forming a composite. The composite is compressed to allow the amino functional group to bond with the maleated polyolefin. The polyolefin is thus bonded to the crosslinked acrylic surface.
Claims4
A bonded composite, comprising:
- a crosslinked acrylic surface coated with an alcohol-based primer having a functional silane compound selected from the group consisting of .gamma.-aminopropyltrialkoxysilane, .gamma.-epoxypropyltrialkoxysilane and .gamma.-hydroxypropyltrialkoxysilane;
- and
- a polyolefin layer having a surface containing a maleated functionality, wherein the functional silane compound bonds to the maleated functionality of the polyolefin surface layer and to the crosslinked, acrylic surface.
A bonded composite, comprising:
- a crosslinked acrylic surface coated with an alcohol-based primer having a functional silane compound--selected from the group consisting of .gamma.-aminopropyltrialkoxysilane, .gamma.-epoxypropyltrialkoxysilane and .gamma.-hydroxypropyltrialkoxysilane, the primer acting as a wetting agent to thereby minimize bead formation on the acrylic surface, wherein the silane compound is formed by:
- mixing about 5 parts water to about 100 parts of a solution comprising about 50% of the silane and 50% of an alcohol;
- allowing the mixture to undergo hydrolysis and condensation, thereby forming a product;
- and
- allowing the product to equilibrate to form a final product;
- and
- a polyolefin layer having a surface containing a maleated functionality, wherein the functional silane compound bonds to the maleated functionality of the polyolefin surface layer and to the crosslinked, acrylic surface.
Dependencies are inferred from the claim text.