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US 2021/0017344 A1Published application
Laser transparent compositions and methods of laser welding
AssigneeLyondellBasell Advanced Polymers Inc.
InventorsYING SHI, DENNIS C. SMITH
Life of this patent
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Abstract
Laser transparent compositions that may be black in color. The laser transparent compositions may include a matrix material that includes a polypropylene, a dye system that includes one, and optionally two or more, polar organic compounds, a plurality of glass fibers, and a UV stabilizer. Methods of laser welding, which may include irradiating a laser absorbing composition that contacts a laser transparent composition at an interface.
Claims20
A laser transparent composition having a black color, the laser transparent composition comprising:
- a matrix material comprising a polypropylene;
- a dye system, wherein the dye system is (i) dispersed in the matrix material, and (ii) present at an amount of about 0.05% to about 0.5%, by weight, based on the weight of the laser transparent composition;
- a compatibilizer, wherein the compatibilizer is (i) dispersed in the matrix material, and (ii) present at an amount of about 0.1% to about 10%, by weight, based on the weight of the laser transparent composition;
- a plurality of glass fibers, wherein the plurality of glass fibers is (i) dispersed in the matrix material, and (ii) present at an amount of about 1% to about 40%, by weight, based on the weight of the laser transparent composition;
- and
- a UV stabilizer, wherein the UV stabilizer is (i) dispersed in the matrix material, and (ii) present at an amount of about 0.1% to about 2%, by weight, based on the weight of the laser transparent composition;
- wherein the laser transparent composition has a laser transparency of at least 50%.
4 more elements
Dependencies are inferred from the claim text.