公开(公告)号：US20170335565A1

公开(公告)日：2017-11-23

申请号：US15523966

申请日：2015-11-19

Applicant: Saint-Gobain Placo SAS

Inventor： Laura Brooks ,  Nicola Jupp ,  Joanna Sparkes ,  Adam Richardson ,  Nicolas Jones ,  Jan Rideout

IPC: E04C2/04 ,  C04B24/26 ,  C04B24/38 ,  C04B14/42 ,  C04B111/00

Abstract: A gypsum product has a first polymeric additive and a second polymeric additive distributed therein, wherein the first polymeric additive is a synthetic polymer and the second polymeric additive is starch. It has been found that the combination of starch and a synthetic polymer may result in one or more of the following advantages in the manufacture and performance of gypsum products: —increased strength; —greater ease of manufacturing due to the increased fluidity of stucco slurries containing both additives; and —increased resistance to hygroscopic expansion.

公开(公告)号：US20170306623A1

公开(公告)日：2017-10-26

申请号：US15521335

申请日：2015-11-19

Applicant: Saint-Gobain Placo SAS

Inventor： Laura Brooks ,  Nicola Jupp ,  Joanna Sparkes ,  Elodie Taboulot ,  Adam Richardson ,  Nicolas Jones ,  Jan Rideout

IPC: E04C2/04 ,  C04B14/42 ,  C04B16/02 ,  C04B24/38 ,  C04B28/14 ,  C04B111/00

Abstract: A plasterboard comprises a gypsum matrix having a polymeric additive distributed therein in an amount of at least 1 wt % relative to the gypsum, the gypsum matrix further having a first group of fibres and a second group of fibres embedded therein, wherein the fibres of the first group of fibres have an average length that is at least three times the average length of the fibres of the second group of fibres.