公开(公告)号：US12209804B2

公开(公告)日：2025-01-28

申请号：US17631531

申请日：2020-08-24

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Nasser Mansour Alsubaie ,  Ahmed Abouelfetouh Youssef ,  Allen Lee White ,  Vern Lowry

IPC: F26B11/04 ,  F26B21/00

Abstract: A rotary dryer for resin dehydration, comprising: a cylindrical body which rotates about an axis perpendicular to a diameter of the cylindrical body; an air filter located outside the cylindrical body; coils located outside the cylindrical body, wherein the coils are oriented vertically and oriented parallel to the diameter of the cylindrical body, wherein the coils do not comprise horizontal surfaces; and lifters located within the cylindrical body.

公开(公告)号：US20250051489A1

公开(公告)日：2025-02-13

申请号：US18723717

申请日：2022-12-16

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Dejin Li ,  Nasser Mansour Alsubaie

IPC: C08F2/22 ,  C08F4/34 ,  C08F4/40 ,  C08F212/08 ,  C08F220/14 ,  C08F220/44 ,  C08F279/02

Abstract: An emulsion polymerization process of manufacturing a graft polymer composition with a reduced residual monomer content includes feeding a vinyl aromatic monomer, an unsaturated nitrile, and a first portion of an initiator to a reactor having a temperature of 50 to 63° C., the reactor containing an initial reaction system comprising water and a diene emulsion. After 10% to 35% of the first portion of the initiator has been added, the reactor temperature is increased to 65 to 85° C. The polymerization reaction runs for 0 to 30 minutes, then a second portion of the initiator and a third monomer are added, and the reaction is allowed to proceed for a second non-charging reaction time to produce the graft polymer composition. In the process, the vinyl aromatic monomer and the unsaturated nitrile are fed to the reactor in 10 to 40 minutes. The process time can be less than 145 minutes.