B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 83/14 (2006.01) B05B 11/00 (2006.01) A61K 7/06 (1990.01)
Patent
CA 2073972
Improved aerosol hair spray packages have reduced volatile organic compound emission during the useful life of the pack- ages. A hair spray composition (3, 25) is packaged in either a self-propelled aerosol hair spray package (1) or a pump spray hair pray package (20) containing a low delivery rate discharge means (6, 23). The hair spray composition (3, 25) contains a combina- tion of at least two polymers in weight ratios of 99;1 to 1;99 differing in weight average molecular weight by at least 1.5, one of which is required to have a number average molecular weight of at least 100,000. This blend of polymers combines with the low delivery rate discharge means -0.2-0.38 grams per second far the self- propelled hair spray package (1) and 0.06 to 0.012 grams per pump stroke for the pump spray hair spray package (20) - to provide an atomized hair spray composition having a volume mean particle size of 60 ~ 12 microns for package (1) and 73 ~ 13 microns for package (20). These packages ace considerably smaller in size than conventional hair spray packages having higher discharge rates, but provide substantially the same number of uses per container as the larger size conventional hair spray packages.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
S. C. Johnson & Son Inc.
S.c. Johnson & Son Inc.
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