Soft foam, molded product, and shock absorber comprising the molded product
View Patent ↗To provide a foam-molded product which is light-weight and superior in formability, flexibility and shock absorbing capacity, and which exhibits favorable tactile impression and excellent safety, as well as a shock absorber using the same that provides favorable feel in wearing. Means for Resolution: When a foam-molded product is used which is produced by including foamed resin particles in a soft resin obtained from a silicone based polymer, as a base resin, produced by curing a liquid resin composition including: (A) a curing agent having at least two hydrosilyl groups in the molecular chain; (B) a polymer which has at least one alkenyl group in the molecular chain, comprises a saturated hydrocarbon unit or an oxyalkylene unit as a repeating unit that constitutes the main chain, and is a linear polymer having a number average molecular weight of no lower than 10,000; and (C) a hydrosilylation catalyst, the product can be suitably used in garments to which it is attached as a shock absorber at an appropriate site such as the front body, the flank part, the back body and the hip around the lumbar.
1. A foam comprising a silicone based polymer as a base resin,
wherein the ASKER FP hardness is no greater than 50.
2. The silicone based polymer foam according to claim 1 produced by curing a foamable resin composition comprising:
(a) a curing agent having at least two hydrosilyl groups in the molecular chain;
(b) a polymer having at least one alkenyl group in the molecular chain and comprising a saturated hydrocarbon unit or an oxyalkylene unit as a repeating unit that constitutes the main chain;
(C) a hydrosilylation catalyst; and
(D) a foaming agent.
3. The silicone based polymer foam according to claim 2 , wherein the polymer (b) having at least one alkenyl group in the molecular chain and comprising a saturated hydrocarbon unit or an oxyalkylene unit as a repeating unit that constitutes the main chain is a linear polymer having a number average molecular weight of no lower than 10,000.
4. The silicone based polymer foam according to claim 2 , wherein the polymer (b) having at least one alkenyl group in the molecular chain and comprising a saturated hydrocarbon unit or an oxyalkylene unit as a repeating unit that constitutes the main chain is a linear polymer having a number average molecular weight of no lower than 15,000.
5. The silicone based polymer foam according to claim 2 , wherein the repeating unit that constitutes the main chain of the polymer (b) is an oxypropylene unit.
6. The silicone based polymer foam according to claim 2 , wherein the molar ratio of the curing agent (a)/the polymer (b) (mol/ mol) is no less than 1/2.
7. The silicone based polymer foam according to claim 2 produced by dispersing the foaming agent (D) having a gaseous state in the resin composition to give a gas-containing resin composition, and thereafter injecting the gas-containing resin composition into a mold form to permit curing.
8. The silicone based polymer foam according to claim 2 produced by adding the foaming agent (D) having a liquid and/or solid state to the resin composition to give a foamable resin composition, and thereafter permitting expansion of the foamable resin composition before or concurrently with permitting curing.
9. The silicone based polymer foam according to claim 8 , wherein the foaming agent (D) having a liquid and/or solid state is an active hydrogen group-containing compound.
10. A shock absorbing pad comprising the silicone based polymer foam according to claim 1 .
11. A garment to which the shock absorbing pad according to claim 10 is attached at a site corresponding to at least one of the front body, the flank part, the back body and the hip around the lumbar.
12. The garment according to claim 11 , wherein the shock absorbing pad is attached in a detachable manner.
13. The garment according to claim 11 , wherein the garment is an underpants.