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1. (WO2007001908) UV-C SENSITIVE COMPOSITION AND DOSIMETER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/001908 International Application No.: PCT/US2006/023496
Publication Date: 04.01.2007 International Filing Date: 16.06.2006
IPC:
G01J 1/50 (2006.01) ,C08L 27/00 (2006.01) ,C08L 27/06 (2006.01) ,C08L 27/08 (2006.01)
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1
Photometry, e.g. photographic exposure meter
48
using chemical effects
50
using change in colour of an indicator, e.g. actinometer
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
27
Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
27
Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
02
not modified by chemical after-treatment
04
containing chlorine atoms
06
Homopolymers or copolymers of vinyl chloride
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
27
Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
02
not modified by chemical after-treatment
04
containing chlorine atoms
08
Homopolymers or copolymers of vinylidene chloride
Applicants:
CRYOVAC, INC. [US/US]; 200 Rogers Bridge Road Duncan, SC 29334, US (AllExceptUS)
HAVENS, Marvin, Russell [US/US]; US (UsOnly)
VE SPEER, Drew [US/US]; US (UsOnly)
KYLE, David, Ray [US/US]; US (UsOnly)
Inventors:
HAVENS, Marvin, Russell; US
VE SPEER, Drew; US
KYLE, David, Ray; US
Agent:
BALTS, Timothy, J. ; Alston & Bird LLP Bank of America Plaza 101 South Tryon Street, Suite 4000 Charlotte, NC 28280-4000, US
Priority Data:
11/159,37222.06.2005US
Title (EN) UV-C SENSITIVE COMPOSITION AND DOSIMETER
(FR) COMPOSITION SENSIBLE AUX UV-C ET DOSIMÈTRE
Abstract:
(EN) The invention is a UV sensitive composition that undergoes a color change upon exposure to a predetermined dosage of UV-C radiation. The UV-C sensitive composition comprises a halogenated polymer, such as polyvinylidene chloride, that produces an acid upon exposure to UV radiation, and a pH sensitive dye. Upon exposure to UV-C radiation, the halogenated polymer undergoes degradation and produces HCl. The pH sensitive dye changes color as a result in an increase in HCl in the system. The composition may also include an acid scavenging composition and/or a diluent to control the amount of HCl produced in the system. The amount of HCl liberated from UV-C exposure may be selectively controlled so that a color change may be produced at a desired UV-C dosage. In some embodiments, the composition may be used to indicate a UV-C dosage from about 100 to 1600 mJ/cm2.
(FR) L'invention concerne une composition sensible aux UV qui subit un changement de couleur lors de l'exposition à un dosage donné de rayonnement UV-C. La composition sensible aux UV-C comprend un polymère halogéné, tel que le polychlorure de vinylidène, qui produit un acide lors de l'exposition à un rayonnement UV et un colorant sensible au pH. Lors de l'exposition à un rayonnement UV-C, le polymère halogéné subit une décomposition et produit de l'HCl. Le colorant sensible au pH change du fait de l'augmentation de la quantité d'HCl dans le système. La composition peut également comprendre une composition absorbant l'acide et/ou un diluant pour contrôler la quantité d'HCl produite dans le système. La quantité d'HCl libérée lors de l'exposition à des UV-C peut être contrôlée sélectivement de façon à ce que le changement de couleur puisse être produit à un dosage d'UV-C souhaité. Dans certains modes de réalisation, la composition peut être utilisée pour indiquer un dosage d'UV-C allant d'environ 100 à 1600 mJ/cm2.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)