Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
310 words
Body with reversible, fixed and temperature- variable light extinctions, especially for the use as erasable record carrier, consisting of a pair of materials (A and B), one material (A) of which consists of at least one polymer and/or resin matrix material and which when heated from the state of maximum light extinction to a clear temperature (T 1 ) lying below a conversion temperature (T z ) and subsequently cooled off below a low temperature (To) yields light extinctions which become smaller with increasing heating temperature (T), and when heated to a temperature between T 1 and T 2 and subsequently cooled below To yield minimum light extinction, whereby when heated above the conversion temperature (T z ) lying above T i and subsequently cooled below To again maximum light extinction is obtained, characterized in that the other material (B) of the pair of materials is at least one organic low-molecular substance which is contained in the material (A) at least partially as dispersed second phase and which is an alkanol, alkandiol, haloalkanol or halo- alkandiol, alkylamine, alkane, alkene, alkine, haloalkane, haloalkene or haloalkine, cycloalkane, cycloalkene or cycloalkine, a saturated or unsaturated mono- or dicarboxylic acid or an ester or an amide or an ammonium salt thereof, a saturated or unsaturated halogen fatty acid or an ester, an amide or an ammonium salt thereof, an arylcarbo- xylic acid or an ester, and amide or an ammonium salt thereof, a haloarylcarboxylic acid or an ester, an amide or an ammonium salt thereof, a thioalcohol, a thiocarboxylic acid or an ester, an amide or an ammonium salt thereof or a carboxylic acid ester of a thioalcohol or mixtures of these compounds, each of which has 10 to 60, preferably 10 to 38, especially 10 to 30 carbon atoms, whereby in the esters the alcohol group may be saturated or unsaturated and/or halogensubstituted.
Claim 2
Dependent Claim
310 words
Body with reversible, fixed and temperature- variable light extinctions, especially for the use as erasable record carrier, consisting of a pair of materials (A and B), one material (A) of which consists of at least one polymer and/or resin matrix material and which when heated from the state of maximum light extinction to a clear temperature (T 1 ) lying below a conversion temperature (T z ) and subsequently cooled off below a low temperature (To) yields light extinctions which become smaller with increasing heating temperature (T), and when heated to a temperature between T 1 and T 2 and subsequently cooled below To yield minimum light extinction, whereby when heated above the conversion temperature (T z ) lying above T i and subsequently cooled below To again maximum light extinction is obtained, characterized in that the other material (B) of the pair of materials is at least one organic low-molecular substance which is contained in the material (A) at least partially as dispersed second phase and which is an alkanol, alkandiol, haloalkanol or halo- alkandiol, alkylamine, alkane, alkene, alkine, haloalkane, haloalkene or haloalkine, cycloalkane, cycloalkene or cycloalkine, a saturated or unsaturated mono- or dicarboxylic acid or an ester or an amide or an ammonium salt thereof, a saturated or unsaturated halogen fatty acid or an ester, an amide or an ammonium salt thereof, an arylcarbo- xylic acid or an ester, and amide or an ammonium salt thereof, a haloarylcarboxylic acid or an ester, an amide or an ammonium salt thereof, a thioalcohol, a thiocarboxylic acid or an ester, an amide or an ammonium salt thereof or a carboxylic acid ester of a thioalcohol or mixtures of these compounds, each of which has 10 to 60, preferably 10 to 38, especially 10 to 30 carbon atoms, whereby in the esters the alcohol group may be saturated or unsaturated and/or halogensubstituted.
Claim 3
Dependent Claim
38 words
Body according to claim 1, characterized in that it contains the organic substance (B) in a weight ratio to the matrix material (A) of from 1 : 3 to 1 : 16, preferably from 1 : to 1:12.
Claim 4
Dependent Claim
44 words
Body according to claim 1 or 2, characterized in that the organic low-molecular substance (B) is elected so that, upon phase alteration from solid to liquid or reversibly, it possesses a difference in volume of af least 5%, preferably of from 5 to 15%.
Claim 5
Dependent Claim
42 words
Body according to one of the claims 1 through 3, characterized in that it contains as matrix material (A) a polyester, polyvinyl chloride, a vinyl chloride vinyl acetate copolymer or another vinyl acetate copolymer, vinyl chloride copolymer and/ or vinylidene chloride copolymer.
Claim 6
Dependent Claim
22 words
Body according to one of the claims 1 through 4, characterized in that it contains a matrix material (A) which shows crazing.
Claim 7
Dependent Claim
38 words
Body according to claims 1 through 5, characterized in that it consists of a pair of materials (A/ B) with a difference between T 1 and T 2 of at least 5°C, preferably of from 5 to 50°C.