公开(公告)号：US20210269582A1

公开(公告)日：2021-09-02

申请号：US17187033

申请日：2021-02-26

Applicant: MICROTEK LABORATORIES, INC.

Inventor： Richard M. FORMATO

IPC: C08G18/81 ,  C08G18/69 ,  C08K5/5397 ,  C08K5/3412 ,  C08K5/01 ,  A61F7/02

Abstract: Radiation curable phase change solutions (PCM) and said solutions as a thermoset thermal energy gels (a radiation cured polymeric network) has a hydrophobic PCM, a polybutadiene urethane acrylate oligomer soluble in the hydrophobic PCM and present as 7% wt/wt to 25% wt/wt of the gel, a photoinitiator soluble in the hydrophobic PCM and present as 0.01% wt/wt to 0.5% wt/wt of the gel, a mono-functional or di-functional crosslinker soluble in the hydrophobic PCM and present as 0% wt/wt to 10% wt/wt of the gel, and a hydrogenated styrenic block copolymer as a secondary resin as 0% to 20% wt/wt of the gel and optionally a tertiary resin as 0% to 5% wt/wt of the gel, wherein the tertiary resin is a hydrogenated styrenic block copolymer that is different than the secondary resin. The solution or gel is sealed in a container, e.g., a sachet, to form a cold pack.

公开(公告)号：US20250066533A1

公开(公告)日：2025-02-27

申请号：US18942953

申请日：2024-11-11

Applicant: MICROTEK LABORATORIES, INC.

Inventor： Richard M. FORMATO

IPC: C08G18/81 ,  A61F7/02 ,  C08G18/69 ,  C08K5/01 ,  C08K5/3412 ,  C08K5/5397 ,  C08L53/02 ,  C09K5/06

Abstract: Methods of making a thermoset thermal energy gels, such as one having a radiation cured polymeric network, are disclosed. The methods include providing a hydrophobic PCM in its liquid state, adding a polybutadiene urethane acrylate oligomer and a mono-functional or di-functional crosslinker soluble in the hydrophobic PCM to the hydrophobic PCM while maintaining the liquid state of the hydrophobic phase change material to form a liquid homogenous mixture, then adding a photoinitiator, which is soluble in the hydrophobic PCM, with mixing to form a final mixture. Next, curing the final mixture occurs by exposure to radiation to form the thermoset thermal energy gel.