Patent ID: 8828410

Claim:
A pasty composition obtained by adding at least one acidic substance selected from citric acid, lactic acid, malic acid, glutamic acid, tartaric acid, acetic acid, glycine, succinic acid, sodium dihydrogen phosphate, and mixtures thereof, to a mixture comprising a crosslinking organopolysiloxane polymer having a polyoxyalkylene group and a liquid oil, heating the resultant mixture of said at least one acidic substance, said crosslinking organopolysiloxane polymer having a polyoxyalkylene group, and said liquid oil to 50-100° C., thereafter adding a basic neutralizing agent to adjust the pH to 5-8, and thereafter removing volatile components by heating to 20-150° C. and/or decompression, wherein the proportions of said acidic substance and basic neutralizer are respectively 0.01-10 wt parts relative to 100 wt parts of said crosslinking organopolysiloxane polymer; wherein when an identical amount of water is added to said composition and the resultant mixture is heated at 60° C. for 24 hours the amount of propionaldehyde produced is 100 ppm or less; wherein said polymer is insoluble in organic solvents, and can swell by containing at least its own weight of decamethyl cyclopentasiloxane, and said crosslinking organopolysiloxane polymer is formed by an addition polymerization of at least one organohydrogen polysiloxane selected from those represented by formula (A1) and formula (A2), and at least one unsaturated compound selected from those represented by formulas (B1), (B2) and (B3): R 1 a R 2 b H c SiO (4−a−b−c)/2 (A1) R 1 d H e SiO (4−d−e)/2 (A2) C f H 2f−1 O(C g H 2g O) h C f H 2f−1 (B1) wherein, in these formulae, R 1 in each case is a monofunctional hydrocarbon group having 1-30 carbon atoms and does not contain an alkenyl group, and which is unsubstituted or optionally substituted, said R 1 groups may be identical or different; R 2 in each case is an organic group of the formula —C f H 2f O(C g H 2g O) h R 6 , said R 2 groups may identical or different; R 3 is a hydrogen atom, or a monofunctional hydrocarbon group having 1-10 carbon atoms which is unsubstituted or optionally substituted, and which does not contain an alkenyl group; R 4 in each case is an organic group which is identical to R 3 or is of the formula —C f H 2f−1 , said R 4 groups may identical or different; R 6 is a hydrogen atom, or a monofunctional hydrocarbon group not containing an aliphatic unsaturated group which is unsubstituted or optionally substituted, or an acetyl group; a, b, c, d, and e are 1.0≦a≦2.3, 0.001≦b≦1.0, 0.001≦c≦1.0, 1.0≦d≦2.3, and 0.001≦e≦1.0, respectively, and are positive numbers satisfying the relations 1.5≦a+b+c≦2.6 and 1.5≦d+e≦2.6, f is an integer from 2-6, g is an integer from 2-4, h is an integer from 1-200, i is an integer from 2-10, and x is 0 or 1.